CN101395513A - Light input/output port of optical component and beam converting apparatus - Google Patents
Light input/output port of optical component and beam converting apparatus Download PDFInfo
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- CN101395513A CN101395513A CNA2007800072008A CN200780007200A CN101395513A CN 101395513 A CN101395513 A CN 101395513A CN A2007800072008 A CNA2007800072008 A CN A2007800072008A CN 200780007200 A CN200780007200 A CN 200780007200A CN 101395513 A CN101395513 A CN 101395513A
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Abstract
A light input/output terminal module 100 comprises a jacket tube 110 and a flange 120. A glass portion 20 of the optical fiber is inserted in the center portion thereof. To efficiently remove the leaked light in a cladding 22 to the jacket tube 110, the jacket tube 110 is made of silica glass or the same material as that of the cladding 22. The jacket tube 110 is fixed by fusion splicing or adhesion to the cladding so as to integrally unify the jacket tube 110 and the cladding 22. The beam diameter at the fiber end portion is enlarged by an optical component which fusion bonds the tip end of the optical fiber to the coreless fiber so that the optical power density at the light input/output terminal module is reduced.
Description
Technical field
The present invention relates to the structure of the light input/output port (optically-coupled portion) of optics, relate in particular to the structure of the light input/output port that in height output light transmits with space coupled systemes optics, uses.And then, the present invention relates to make the beam converting apparatus of parallel lightization and optically focusedization.Relate in particular to the beam converting apparatus that in the high power light of the beam diameter that can enlarge the optical fiber end place transmits with optics, uses.
Background technology
In recent years, in the field of optical communication system, the popularizing of the WDM transfer system that reply can high capacity transmits, the height outputization of the luminous power of use is developed, thinks that the trend of such height outputization (a few W rank) is also further uprising from now on.
In addition, in manufacture field, also require the high-quality laser instrument of higher output gradually, tackle, laser instrument inner structure part and laser instrument output block have been required input and output patience to height output light (tens～hundred W ranks) in this.
Knew the various optical elements of configuration between optical fiber and collimation lens (collimating apparatus) in the past, and the light parts with various functions.In addition, use in the laser instrument in processing, also the laser guide device is connected in the efferent of laser instrument oscillation device via the light incident side lens section, after will using lens section optically focused from the laser of laser instrument oscillation device output, make its optical fiber that is incident in the laser guide device from the incident end, transmit, and penetrate from the ejaculation end of this optical fiber at its in-core, behind the collector lens optically focused with the emitting side lens section, shine.
As optical communication with and the height output light transmission space coupled systemes optics that uses in using etc. of machining such as welding cut-outs etc., for example, optoisolator, WDM filter module, PBS (Polarization Beam Splitter), PBC (Polarization Beam Combiner), light circulator (circulator), laser guide device and laser instrument delivery, optical connector etc. are arranged.
As shown in Figure 6, the part of incident light 901 of utilizing collimation lens 902 optically focused, and is propagated in optical fiber 903 because the coupling loss that the astigmatism of MFD erroneous matching or lens etc. cause and revealing to clad 906 in the end 904 of optical fiber 903.Under the situation of aforesaid high power input, can not ignore power to the light leak of this clad 906, if because adhering to wait and causing radiating to lining portion 907 sharp from clad 906 of the bending of optical fiber 903 or foreign matter then melt it, cause the problem damaged etc.
Therefore, in patent documentation 1, for fear of will from the height of laser instrument oscillation device output laser via the laser guide device when machined object export reflector laser or the mistake of optical connector and laser instrument emitter side aim at the situation that the incident laser that causes damages sleeve (sleeve), the sheet portion that is made of sapphire is set in described barrel forward end portion, in addition, in described sleeve, curtain-shaped cover member is set, and then scattering part is set at the exposed division of optical fibre core.
In addition, in patent documentation 2, even in order to be incident under the situation of clad of optical fiber from the reflector laser of machined object or the wrong incident laser that causes etc. aimed at, also prevent to damage the cover (jacket) of optical fiber, the cover surface of the optical fiber exposed division in sleeve is with the inorganic adhesive quartz ampoule that is adhesively fixed of regulation.
In addition, use in the laser instrument at above-mentioned smooth parts or processing, at each optical fiber end place by the optically-coupled of lens light gathering, luminous power (luminous energy) density maximum, the loss that the light absorption that dust in this part etc. causes causes, loss of causing based on the light absorption of the tissue defects in optical fiber or the dielectric multiple film layer filtrator (AR lining) etc. etc. change heat into, cause taking place fatal damaged phenomenons such as () fiber-fuses of optical fiber, have the possibility of the breakage that optical fiber, parts, device etc. take place.
Therefore, proposed to enlarge and utilized connector connecting portion or lens light gathering, reduced the method for optical power density in the beam diameter of optical fiber end.In patent documentation 3, for the MFD (mode field diameter) that enlarges optical fiber, the core that has proposed to generate the adulterant thermal diffusion that makes in-core enlarges the processing (handling hereinafter referred to as TEC) of optical fiber or connects the processing (handling hereinafter referred to as the GIF welding) of GIF (gradient fiber (Graded IndexFiber)) in the welding of the end of optical fiber.In addition, in patent documentation 4, in order to enlarge the beam diameter that is concentrated on optical fiber end, the front end welding connection mode field enlarged-diameter GIF that has proposed at single-mode fiber connects the processing (handling hereinafter referred to as the welding of GIF+ coreless fiber) of the coreless fiber that does not have core in the front end welding of this GIF.
Figure 12 represents the diagrammatic cross-section of the optical collimator 590 that the leading section 593 of the core 592 of optical fiber 591 handle to enlarge by TEC.
Patent documentation 1: the spy opens communique 2003-No. 107294
Patent documentation 2: the spy opens communique 2003-No. 139996
Patent documentation 3: the spy opens communique 2004-No. 86127
Patent documentation 4: the spy opens communique 2005-No. 17702
Patent documentation 5: the spy opens communique 2004-No. 86127
Yet, the problem below in the light input/output port of above-mentioned optics in the past, existing.In patent documentation 1, at the exposed division of optical fibre core for fixing scattering part and used inorganic adhesive, in addition, in patent documentation 2, also in the cover surface of optical fiber exposed division for fixing quartz ampoule and used inorganic adhesive.Using glass as inorganic adhesive is that bonding agent or pottery are bonding agent, but this is the damage of the bonding agent that causes for fear of laser.
But the refractive index and the quartz glass of this inorganic adhesive are inconsistent, therefore, exist energy efficiency not to emit the problem of the light of propagating well in the clad of optical fiber.Therefore, the trouble that has damage sleeve or cover etc.
In addition, also there is the problem that is melted lining portion by the light of fiber end face reflection in the output terminal at optical fiber.For example, in Fig. 7, penetrate light 911 in fiber end face 912 reflections, this reflected light 913 spills and heat release to optical-fibre coating portion 907, causes the problem of melting fiber lining portion 907 owing to this heat release.
In addition, during the TEC in patent documentation 3 handled, core enlarges optical fiber, and there are the following problems, that is: the thermal diffusion of adulterant needs the time, and then the problem that only can cause the external diameter of core expansion optical fiber to attenuate by simple maintenance, heating.In addition, core enlarges as funnel gradually towards front end, therefore, is difficult to control core diameter, also has the problem that is difficult to stipulate.Therefore, when being coupled with optical connector, the high problem of possibility that also exists coupling efficiency to reduce.
In addition, in the GIF of patent documentation 4 welding was handled, GIF was that the refractive index of central shaft of core is the highest, and refractive index is towards periphery and the structure that reduces gradually, and core diameter is big, therefore, compares with common single-mode fiber, and dopant dose is many.Therefore, the fusing point of optical fiber self reduces.Thereby even by enlarging MFD, reduce the optical power density at optical fiber end place, the fusing point of optical fiber self also reduces, and therefore, has the problem that can not get the effect of fusing point.In addition, GIF is because the length of GIF and MFD changes, and therefore, also has the problem of the length control of the GIF in the operations such as grinding of the front end face that is difficult to carry out GIF.Therefore, when being coupled with optical connector, the high problem of possibility that also exists coupling efficiency to reduce.
In addition, in the welding of GIF+ coreless fiber is handled, need length control and twice welding operation of GIF, therefore, have the problem of the increase or the increase that welding is lost of light constant.
But in the TEC of above-mentioned proposition handled, core enlarges optical fiber, and there are the following problems, that is: the thermal diffusion of adulterant needs the time, and then the problem that only can cause the external diameter of core expansion optical fiber to attenuate by simple maintenance, heating.In addition, core enlarges as funnel gradually towards front end, therefore, is difficult to control core diameter, also has the problem that is difficult to stipulate.Therefore, when being coupled with optical connector, the high problem of possibility that also exists coupling efficiency to reduce.
In addition, in the GIF welding was handled, GIF was that the refractive index of central shaft of core is the highest, and refractive index is towards periphery and the structure that reduces gradually, and core diameter is big, therefore, compares with common single-mode fiber, and dopant dose is many.Therefore, the fusing point of optical fiber self reduces.Thereby even by enlarging MFD, reduce the optical power density at optical fiber end place, the fusing point of optical fiber self also reduces, and therefore, has the problem that can not get the effect of fusing point.In addition, GIF is because the length of GIF and MFD changes, and therefore, also has the problem of the length control of the GIF in the operations such as grinding of the front end face that is difficult to carry out GIF.Therefore, when being coupled with optical connector, the high problem of possibility that also exists coupling efficiency to reduce.
In addition, in the welding of GIF+ coreless fiber is handled, need length control and twice welding operation of GIF, therefore, have the problem of the increase or the increase that welding is lost of light constant.
And then, at the core that enlarges the optical fiber front end, reduce under the situation of optical power density, also as shown in figure 13, exist the part of the light that is incident in optical fiber 591 to spill to clad 594, the light of this clad mould is given the problem of damage to optical fiber 591.The light of clad mould arrives optical-fibre coating portion 595 if propagate in clad 594, then because therefore the energy density height of incident light, exists heating optical fiber lining portion 595, give the trouble of damage.
Summary of the invention
The present invention makes in order to address these problems, its purpose is to provide the light input/output port of the optics of the damage that can prevent that the light leak to the clad mould from causing, utilize welding to connect the front end of optical fiber and the parts of coreless fiber, enlarge the beam diameter at optical fiber end place, reduce the power density at the input/output terminal place of light, prevent the breakage of optical fiber, parts, device etc.
And then, the object of the present invention is to provide and utilize welding to connect the front end of optical fiber and the parts of coreless fiber, can enlarge the beam converting apparatus of the beam diameter at optical fiber end place.
First mode of the light input/output port of optics of the present invention is characterized in that possessing: waveguide road, the clad that it comprises core and covers the periphery of this core; Flange, it has shielding portion midway inside surface, described waveguide road is inserted lead to first through hole that forms at described shielding portion, and an end is fixed in the lining portion that covers described waveguide road; With sleeve pipe with photopermeability, its have in second through hole that is formed centrally, described waveguide road is inserted leads to, and an end is fixed in the other end of described flange in described second through hole.
Second mode of the light input/output port of optics of the present invention is characterized in that described sleeve pipe is heated processing, is fused to described clad integratedly.
The Third Way of the light input/output port of optics of the present invention is characterized in that, described sleeve pipe and described clad in the certain mode of refractive index by bonding.
The cubic formula of the light input/output port of optics of the present invention is characterized in that, described waveguide road and described sleeve pipe are bonding by the UV curing type bonding agent with the refractive index that equates with the clad on described waveguide road.
The 5th mode of the light input/output port of optics of the present invention, it is characterized in that, described waveguide road and described sleeve pipe have the material of siloxane bond by use, and any of the light of the light of irradiating ultraviolet light, excimer laser, excited quasi-molecular lampbulb come bonding.
The 6th mode of the light input/output port of optics of the present invention is characterized in that, described sleeve pipe have with the refractive index of described clad about equally or than its big refractive index.
The 7th mode of the light input/output port of optics of the present invention is characterized in that, the refractive index of described sleeve pipe is confirmed as: make from the remove rate of described clad to the light leak of described sleeve pipe to reach more than the setting.
The all directions formula of the light input/output port of optics of the present invention is characterized in that described sleeve pipe is formed by quartz glass.
The 9th mode of the light input/output port of optics of the present invention is characterized in that, described sleeve pipe forms with the material identical with described clad.
The tenth mode of the light input/output port of optics of the present invention is characterized in that, the connecting portion of the connecting portion of described flange and described sleeve pipe and described flange and described lining portion is that bonding agent fixes by thermotolerance inorganic adhesive or epoxy.
The 11 mode of the light input/output port of optics of the present invention is characterized in that, the diameter and the length of described sleeve pipe are confirmed as: make from the remove rate of described clad to the light leak of described sleeve pipe to reach more than the setting.
The 12 mode of the light input/output port of optics of the present invention is characterized in that, described flange is formed by the metal material of stainless steel system.
The 13 mode of the light input/output port of optics of the present invention is characterized in that, the end face on described waveguide road also welding be connected with the coreless fiber that refractive index equates with described core.
The tenth cubic formula of the light input/output port of optics of the present invention is characterized in that, the length and the diameter of the optical axis direction of described coreless fiber are confirmed as: make from the power density of the light of described waveguide road incident to reduce to penetrate after the regulation ratio.
The 15 mode of the light input/output port of optics of the present invention is characterized in that, side (end face) welding integratedly of described second through hole that described coreless fiber also has with described sleeve pipe after described sleeve pipe is heated processing.
The 16 mode of the light input/output port of optics of the present invention, it is characterized in that, described coreless fiber and the end face opposite side of end face that is connected to described waveguide road, with respect to the optical axis on described waveguide road with the angle of regulation be tilted grind or cut off after, implement antireflection film.
First mode of beam converting apparatus of the present invention, make parallel lightization and optically focusedization, it is characterized in that possessing optical fiber patch cords and lens, described optical fiber patch cords is that welding is connected with the front end of an optical fiber and does not have the parts that beam diameter enlarges a coreless fiber using core.Thus, the beam diameter in the interface of the beam diameter of the front end face of optical fiber patch cords and coreless fiber and optical fiber is compared extended.Thereby, can reduce the optical power density of the front end face of optical fiber patch cords.For example, if beam diameter is extended to 2.5 times, then the irradiated area of light is extended to about 6 times.Thereby optical power density is reduced to about 1/6th.
Second mode of beam converting apparatus of the present invention, make parallel lightization and optically focusedization, it is characterized in that, possess optical fiber patch cords and lens, described optical fiber patch cords is that welding is connected with the front end of many optical fiber and does not have the parts that beam diameter enlarges a coreless fiber using core on same interface.Thus, the beam diameter that is concentrated in the interface of beam diameter and coreless fiber and optical fiber of front end face of optical fiber patch cords is compared extended.Thereby, can reduce the optical power density of the front end face of optical fiber patch cords.In addition, can cut down the component count that constitutes beam converting apparatus.Thereby, can reduce the manufacturing cost of beam converting apparatus.In addition, by front end and coreless fiber of many optical fiber of while welding connection, can cut down the welding operation.Thereby, can reduce welding loss, and, the manufacturing cost of beam converting apparatus can be reduced.
The Third Way of beam converting apparatus of the present invention, in the beam converting apparatus of second embodiment of the present invention, it is characterized in that, the external diameter of described coreless fiber is based on the external diameter of described many optical fiber and can welding connects the front end of described many optical fiber and the size of described coreless fiber on same interface at least.
The cubic formula of beam converting apparatus of the present invention, it is characterized in that, make parallel lightization and optically focusedization, it is characterized in that, to connect in the front end welding of an optical fiber when not having beam diameter and enlarging with the parts after the coreless fiber of core as the single-core fiber patch cord, described beam converting apparatus possesses optical fiber patch cords and lens, and described optical fiber patch cords is that Postcapillary parts are fixed in bonding or fusion with the part of the described coreless fiber of one or more described single-core fiber patch cord.Thus, the beam diameter that is concentrated in the interface of beam diameter and coreless fiber and optical fiber of front end face of optical fiber patch cords is compared extended.Thereby, can reduce the optical power density of the front end face of optical fiber patch cords.In addition, can cut down the component count that constitutes beam converting apparatus.Thereby, can reduce the manufacturing cost of beam converting apparatus.
The 5th mode of beam converting apparatus of the present invention, in the beam converting apparatus of the 4th embodiment of the present invention, it is characterized in that described kapillary has: the part of the described coreless fiber of described one or more single-core fiber patch cord can be inserted, distinguish the hole of identical diameter or roughly the same diameter with the external diameter of described coreless fiber.
The 6th mode of beam converting apparatus of the present invention in the beam converting apparatus of the embodiment the of the present invention the 4th or five, is characterized in that, described kapillary is quartz glass capillary or glass capillary with the refractive index that equates with coreless fiber.
The 7th mode of beam converting apparatus of the present invention in the beam converting apparatus of any embodiment, is characterized in that in of the present invention first～the 6th the refractive index of described coreless fiber is identical with the refractive index of the core of described optical fiber.Thus, can reduce light loss in the interface of optical fiber and coreless fiber.
The all directions formula of beam converting apparatus of the present invention in the beam converting apparatus of any embodiment, is characterized in that in of the present invention first～the 7th described coreless fiber is glass rod or quartz rod.Thus, can reduce light loss in the interface of optical fiber and coreless fiber.
The 9th mode of beam converting apparatus of the present invention, in of the present invention first～the 8th in the beam converting apparatus of any embodiment, it is characterized in that, based on the beam diameter of described optical fiber, and by the optical power density of the light wavelength defined of the kind of described optical fiber and use, the external diameter of described coreless fiber forms: the described optical power density of front end face that makes welding be connected in the described coreless fiber of described optical fiber becomes the value of the scope of regulation.Thus, even be the big optical fiber patch cords of diffusion angle of the light in the coreless fiber, also can reduce the optical power density in the front end face of optical fiber patch cords.
The tenth mode of beam converting apparatus of the present invention, in of the present invention first～the 9th in the beam converting apparatus of any embodiment, it is characterized in that, based on the beam diameter of described optical fiber, and by the optical power density of the light wavelength defined of the kind of described optical fiber and use, the length of the direction of transfer of the light of the described coreless fiber of described optical fiber patch cords is ground or is cut to: the described optical power density of front end face that makes welding be connected in the described coreless fiber of described optical fiber becomes the value of the scope of regulation.Thus, even incide the big light of luminous power in the optical fiber, also can reduce the optical power density in the front end face of optical fiber patch cords.
The 11 mode of beam converting apparatus of the present invention, in of the present invention first～the tenth in the beam converting apparatus of any embodiment, it is characterized in that the front end face of the described coreless fiber of described optical fiber patch cords is tilted the angle of grinding or being cut to the scope of regulation.Thus, can reduce reflection in the front end face of optical fiber patch cords.
The 12 mode of beam converting apparatus of the present invention, in of the present invention first～the 11 in the beam converting apparatus of any embodiment, it is characterized in that, implement antireflection at the front end face of the described coreless fiber of described optical fiber patch cords and handle with coating.Thus, can reduce reflection in the front end face of optical fiber patch cords.
The 13 mode of beam converting apparatus of the present invention, it makes parallel lightization and optically focusedization, it is characterized in that, possesses: optical fiber patch cords, its welding are connected with end face and coreless fiber of an optical fiber; Kapillary, the outer peripheral face of itself and described optical fiber patch cords connects airtight; Lasso, it covers the lining portion and the described kapillary of described optical fiber integratedly; And lens, it makes incident light be concentrated on described coreless fiber, or makes the ejaculation parallel lightization from described coreless fiber.
The tenth cubic formula of beam converting apparatus of the present invention is characterized in that described optical fiber patch cords and described kapillary are connected airtight by heat treated.
The 15 mode of beam converting apparatus of the present invention is characterized in that, the refractive index of the clad of described refractive index capillaceous and described optical fiber about equally.
The 16 mode of beam converting apparatus of the present invention is characterized in that, described lasso has shielding portion between the lining portion of described optical fiber patch cords and described optical fiber.
(invention effect)
According to the present invention as can be known, can provide integrated, can improve the rate of removing, light input/output port that can atraumatic optics to the light leak of clad by sleeve pipe is fused to clad.In the light input/output port of optics of the present invention, by possessing sleeve pipe and flange, can emit with the light leak of emitting to sleeve pipe and then to flange, to external efficiencies heat release well from flange.
In addition, fiber end face also welding connect the coreless fiber that refractive index equates with the core of optical fiber, thus, the beam diameter at expansion fiber end face place, the reduction optical power density can prevent the breakage of optical fiber, parts, device etc.
And then, according to the present invention as can be known, even be the big optical fiber patch cords of diffusion angle of the light in the coreless fiber, even, also can reduce the optical power density of the front end face of optical fiber patch cords for being incident in the big light of luminous power of optical fiber.Thus, the loss occurrence that the light absorption that caused by the dust at each optical fiber end place of the optically-coupled of lens light gathering etc. causes will be reduced in the past, or the loss that causes based on the light absorption of the tissue defects in optical fiber or the dielectric multiple film layer filtrator etc. etc. is converted to heat, the situation that the breakage of optical fiber, parts, device etc. takes place takes place in fatal damaged phenomenons such as () fiber-fuses that cause taking place optical fiber.
In addition, can cut down the component count that constitutes beam converting apparatus.Thereby, can reduce the manufacturing cost of beam converting apparatus.In addition, by front end and coreless fiber of many optical fiber of while welding connection, can cut down the welding operation.Thereby, can reduce welding loss, and, the manufacturing cost of beam converting apparatus can be reduced.
Description of drawings
Fig. 1 is the synoptic diagram of structure of light input/output port of the optics of expression embodiments of the present invention.Fig. 1 (a) is a side sectional view, and Fig. 1 (b) is a front view.
Fig. 2 is the figure that amplifies the side sectional view of the light input/output port shown in the presentation graphs 1 (a).
Fig. 3 is the synoptic diagram that the processing of the light leak that is incident in clad is described.
Fig. 4 is the side sectional view of structure of light input/output port of the optics of expression another embodiment of the present invention.
Fig. 5 is the side sectional view of structure of light input/output port of the optics of expression another embodiment of the present invention.
Fig. 6 is the synoptic diagram of explanation to the light leak of clad mould.
Fig. 7 is the synoptic diagram of explanation by the propagation of the light of fiber end face reflection.
Fig. 8 is the skeleton diagram that expression is suitable for an example of first optical collimator of the present invention, and Fig. 8 (a) is the diagrammatic cross-section of optical collimator, and Fig. 8 (b) is the diagrammatic cross-section of single-core fiber patch cord.
Fig. 9 is the skeleton diagram of an example of the expression twin-core lasso that is suitable for other WDM filter modules of the present invention etc.
Figure 10 is the figure that is used to illustrate an example of twin-core fiber patch cord, and Figure 10 (a) is the diagrammatic cross-section of twin-core fiber patch cord, and Figure 10 (b) is the figure that is used to illustrate the structure member of twin-core fiber patch cord.
Figure 11 is that the beam converting apparatus of expression another embodiment of the present invention is the diagrammatic cross-section of the structure of optical collimator.
Figure 12 utilizes TEC to handle the diagrammatic cross-section of the optical collimator in the past of the leading section that has enlarged optical fiber.
Figure 13 is that the light of explanation clad mould is given the figure of the situation of damage to optical fiber.
Among the figure: 10,903-optical fiber; 20-fiber optic strand; 21,905-core; 22,906-clad; 30,907-optical-fibre coating portion; 40,902-collimation lens; 100,200,300-light input/output port; 110,210,310-sleeve pipe; 111-the second through hole; 120,220-flange; 121,221-shielding portion; 122-the first through hole; 130-bonding agent; 140,901-incident light; 141,241-light leak; 240,911-ejaculation light; 251-end face; 341-reflected light; 350-coreless fiber; 351-outgoing side end face; 904-end; 912-fiber end face; 913-reflected light; 510,540,590-optical collimator; 511-collimating apparatus framework; 512-lasso; 513,531,537-single-core fiber patch cord; 514-lens; 515-lens fixture; 516,524,526,533,535,541,591-optical fiber; 517,525,534,536,542-coreless fiber; 518,545-kapillary; 520-twin-core lasso; 521,530-twin-core fiber patch cord; 522-bonding agent; 523-shell; 532-kapillary; 543,594-clad; 544,595-optical-fibre coating portion; 546-lasso; 547-leakage light; 592-core; The leading section of 593-core.
Embodiment
With reference to accompanying drawing, describe the structure of the light input/output port of optics preferred embodiment of the present invention in detail.Also have, for each structural portion with identical function, in order to simplify diagram and explanation, mark same-sign and representing.
Fig. 1 is the synoptic diagram of structure of light input/output port of the optics of expression embodiments of the present invention.Fig. 1 (a) is the side sectional view of the light input/output port 100 of present embodiment, and Fig. 1 (b) is the front view from the light input/output port 100 of accompanying drawing left side observation.In the present embodiment, be an example on waveguide road as optics, optical fiber as object, is described the light input/output port of this optical fiber.
In Fig. 1, optical fiber 10 comprises: as the fiber optic strand 20 and the optical-fibre coating portion 30 on waveguide road, and possess light input/output port 100 in its end.Light input/output port 100 comprises: sleeve pipe 110 and flange 120, and in central part separately, insert and be connected with fiber optic strand 20.
The internal diameter of flange 120 form with the profile of sleeve pipe 110 about equally or bigger slightly than it so that can insert sleeve pipe 110, and an end of sleeve pipe 110 only inserted specified length and is adhesively fixed from an end of flange 120.Be inserted with the fiber optic strand 20 of the lining portion 30 of optical fiber 10 being removed and exposing from the other end of flange 120,, light input/output port 100 be assemblied in optical fiber 10 by the other end and the lining portion 30 of the flange 120 that is adhesively fixed.
Use Fig. 2, and then explain the structure of light input/output port 100.Fig. 2 is the figure that amplifies the side sectional view of the light input/output port 100 shown in the presentation graphs 1 (a).
In the light input/output port 100 of present embodiment, form sleeve pipe 110 by quartz glass or with clad 22 identical materials, with can be at the light leak in sleeve pipe 110 efficient are removed the clad 22 of optical fiber 10 well, and, by having used arc discharge or CO
2The heating of laser instrument etc. is fused to clad 22 with sleeve pipe 110, and is thus that sleeve pipe 110 and clad 22 is integrated.
As mentioned above, under the situation of using the material formation sleeve pipe 110 identical with clad 22, the refractive index of sleeve pipe 110 equates with the refractive index of clad 22, therefore, can be subjected to the influence of refractive index hardly, light leak can be emitted to sleeve pipe 110 from clad 22.In addition, formed by quartz glass under the situation of sleeve pipe 110, the refractive index of the refractive index ratio clad 22 of sleeve pipe 110 is big, therefore, light leak can be emitted to sleeve pipe 110 efficient well from clad 22.
In the present embodiment, therefore welding sleeve pipe 110 and clad 22 and integrated, can reduce light leak from clad 22 after the border of sleeve pipe 110 and clad 22 is reflected, and returns the ratio in the clad 22.
According to the light input/output port 100 of present embodiment as can be known, as described above the refractive index of sleeve pipe 110 is made as and equates with the refractive index of clad 22 or bigger than it, and, by heat treated or be adhesively fixed, integrated sleeve pipe 110 and clad 22 can make the light leak in the clad 22 propagate well to sleeve pipe 110 1 side efficient thus.
Secondly, to the method for attachment between sleeve pipe 110 and the flange 120, and flange 120 and optical-fibre coating portion 30 between method of attachment describe.One end of sleeve pipe 110 only inserts specified length to the inside of flange 120, with the be adhesively fixed gap of inwall of sleeve pipe 110 and flange 120 of the bonding agent 130 of regulation.As bonding agent 130, using thermotolerance inorganic adhesive or epoxy is that bonding agent is good.
By using thermotolerance inorganic adhesive or epoxy is the inwall of bonding sleeve pipe 110 of bonding agent and flange 120, can prevent that bonding agent from absorbing the light leak of emitting from sleeve pipe 110 and the situation that causes burning.The light leak of emitting from sleeve pipe 110 becomes heat and emits to the outside at flange 120.It is good that flange 120 is by the high stainless steel of corrosion resistance that metal material forms.
One end of sleeve pipe 110 is inserted the length of the inside of flange 120 and determine according to following, that is: the heat release that causes of the light leak of emitting to shielding portion 121 grades of flange 120 from sleeve pipe 110 does not produce harmful effect to sleeve pipe 110.That is,, determine that being spaced apart of end of sleeve pipe 110 and shielding portion 121 is good so that sleeve pipe 110 is not subjected to the mode of influence of the heat release at shielding portion 121 places strongly.
On the other hand, between flange 120 and optical-fibre coating portion 30, connecting portion not only, and also also to fill thermotolerance inorganic adhesive or epoxy in the gap of shielding portion 121 and optical-fibre coating portion 30 be that bonding agent 130 such as bonding agent carries out bonding for good.Thus, light leak efficient under the situation that does not arrive optical-fibre coating portion 30 of coming by first through hole 122 from sleeve pipe 110 grades is emitted well to the outside, can avoid the inside of flange 120 to become the situation of high heat.
Secondly, use Fig. 3 to illustrate how processed the light leak that is incident in clad 22 is in the light input/output port 100 of present embodiment.In Fig. 3,, be incident in the core 21 of optical fiber 10 from incident light 140 collimated lens 40 optically focused of outside incident.At this moment, the light of a part is not incident in core 21 owing to the erroneous matching of MFD or the astigmatism of lens etc., and is incident in clad 22.The light that is incident in clad 22 is at the following light leak 141 that becomes.
In the present embodiment, by integrated sleeve pipe 110 and clad 22, light leak 141 is emitted to sleeve pipe 110 efficient well from clad 22.The light leak 141 of emitting in sleeve pipe 110 is from shielding portion 121 irradiations of one end to flange 120.The diameter of sleeve pipe 110 and length can determine that is: light leak 141 is emitted to shielding portion 121 efficient via sleeve pipe 110 well from clad 22 according to following.
Thus, shielding portion 121 is heated, and temperature rises, but flange 120 is that the high materials of heat conductivity such as metal material form by stainless steel, and therefore, flange 120 self is brought into play function as radiator, the heat release that light leak 141 causes is from the peripheral part transmission of shielding portion 121 to flange 120, and to outside heat release.Thus, the temperature that can prevent the light input/output port 100 that light leak 141 causes rises.
As mentioned above, the light leak 141 of emitting from an end of sleeve pipe 110 is covered by the shielding portion 121 of flange 120, but a part of light leak 141 may arrive the opposition side of shielding portion 121 by the through hole 122 that is arranged at shielding portion 121.Therefore, in the light input/output port 100 of present embodiment, between the opposition side of shielding portion 121 and optical-fibre coating portion 30, be filled with bonding agent 130, arrive optical-fibre coating portion 30 in order to avoid arrive the light leak 141 of the opposition side of shielding portion 121, owing to cover light leak 141 thus, therefore, there is not the trouble of optical-fibre coating portion 30 being given damage.
According to present embodiment as can be known, by suitably determining the diameter and the length of sleeve pipe 110, the rate of removing of the light leak 141 in the clad 22 is reached more than the setting.That is, by so that from the light leak 141 of clad 22 by the reflection of the outer wall of sleeve pipe 110, in the mode that its end can be spread fully, determine the diameter and the length of sleeve pipe 110, can improve the rate of removing of the light leak 141 in the clad 22.
As an example, the diameter that uses fiber optic strand 20 as the single-mode fiber (SMF) of φ 0.125mm as optical fiber 10, with the laser about wavelength 1000～1100nm during as incident light 140, as sleeve pipe 110, it is good for example using the sleeve pipe that φ 1.4mm is above, length 6mm is above, and can make the clad mould rate of removing thus is more than 90%.
More than the preferred 1.8mm of the diameter of flange 120, especially, form identically by shape, prior ferrule easily can be changed at light input/output port 100 with prior ferrule (ferrule) with flange 120.In addition, the end face of the light incident side of sleeve pipe 110 is good in order to prevent reflection tilting to grind back enforcement antireflection film.As the angle of the end face that tilts to grind, for example, under the situation that core diameter is big when SMF or under the situation of multimode optical fiber (MMF),, can obtain better characteristic by being made as more than 8 degree wishing to be more than 8 degree under the situation of using common SMF.But, under the situation of big SMF of core diameter or MMF, be made as littler angle and also can.Thus, can prevent the reflection of light leak 141 of the end of sleeve pipe 110.
As mentioned above, by sleeve pipe 110 is fused to clad 22 that it is integrated, can make to the light leak of clad 22 and propagate well to sleeve pipe 110 efficient, can improve the rate of removing from the light leak of clad 22.Make the light leak propagated to sleeve pipe 110 and then emit and heat release, thereby can prevent the damage of optical fiber 10 to flange 120.
Below, use Fig. 4, the light input/output port of the optics of other embodiments of the present invention is described.Fig. 4 is illustrated in the synoptic diagram of exporting the light input/output port 200 that uses under the situation of light from the end of optical fiber 10.In above-mentioned, the situation that makes incident light 140 be incident in optical fiber 10 is illustrated, but below, the situation of exporting light from the end of optical fiber 10 is described.
Under the situation of optical fiber 10 output light, propagate the part of the ejaculation light 240 of coming sometimes in end face 251 reflections, leakage in clad 22 at core 21.Such light leak 241 is propagated in clad 22, and then at the internal communication of sleeve pipe 210.The light leak of propagating at sleeve pipe 210 241 is covered by the shielding portion 221 of flange 220, makes it not arrive optical-fibre coating portion 30, finally is converted to heat at flange 220 or shielding portion 221 places, from the outside surface of flange 220 to outside heat release.
In Fig. 4, after the end face 251 of the end face of the outgoing side of sleeve pipe 210 and fiber optic strand 20 tilted to grind integratedly, implement antireflection film.The angle of grinding as the inclination of end face 251, for example, under the situation of using common SMF, hope is more than 8 degree, under the situation that core diameter is also big under the situation of SMF or under the situation of multimode optical fiber (MMF), more than being made as 8 degree, can obtain better characteristic.
Also have, under the situation of the light input/output port 200 of present embodiment, between the end face of the opposition side of the outgoing side of the shielding portion 221 of flange 220 and sleeve pipe 210, the gap is not set, the gap is not set between shielding portion 221 and optical-fibre coating portion 30 yet.This be because, in the light input/output port 100 of light incident, the part of the light of collimated lens 40 optically focused is revealed to clad 22, with respect to this, under the situation of the light input/output port 200 of exporting light, with the light leak that is reflected by end face 251 and reveal in clad 22 is object, and therefore, the situation of the strength ratio light input/output port 100 of light leak is little.Therefore, make the end of the end face of sleeve pipe 210 and optical-fibre coating portion 30 approaching even clip shielding portion 221, optical-fibre coating portion 30 can fusion yet.
As mentioned above, even reflected by end face 251 and under the situation that clad 22 is revealed in a part that penetrates light 240, also can be by the light input/output port 200 of present embodiment, prevent optical-fibre coating portion 30 because reflected light 241 heat releases and the situation of fusion.
Below, use Fig. 5 that the light input/output port of the optics of another embodiment of the present invention is described.The light input/output port of present embodiment also uses under the situation of exporting light from the end of optical fiber 10.Fig. 5 is the synoptic diagram of the light input/output port 300 of expression present embodiment.
In the light input/output port 300 of present embodiment, its front end after fiber optic strand 20 and sleeve pipe 310 are integrated and then be connected coreless fiber 350.The refractive index of coreless fiber 350 equates with core 21, forms the diameter that has at least greater than core 21.
In the end of fiber optic strand 20, therefore the optical power density height, may cause heat release taking place, damage optical fiber owing to the light absorption that the tissue defects of dust in the end or optical fiber etc. causes.Therefore, in the present embodiment, the front end connection coreless fiber 350 at fiber optic strand 20 makes the light that penetrates from fiber optic strand 20 spread in coreless fiber 350 thus, and its end from coreless fiber 350 is penetrated with low optical power density.
In addition, in the present embodiment,, grind or cut off outgoing side end face 351 with angle tilt with respect to the regulation of the optical axis of fiber optic strand 20 for the reflection at outgoing side end face 351 places that reduce coreless fiber 350.As the angle of regulation, for example, can be made as 8 degree.
Under the situation that the outgoing side end face 351 with coreless fiber 350 is formed slopely as described above, can not remove the reflected light at outgoing side end face 351 places fully, as shown in Figure 5, a part that penetrates light is output side end face 351 reflections, produces reflected light 341.In the light input/output port 300 of present embodiment, light that this reflected light 341 is incident in clad 22 is emitted to the outside via sleeve pipe 310.
The length of the optical axis direction of coreless fiber 350 and diameter can determine according to following, only reduces the ratio stipulated at outgoing side end face 351 from the power density of the light of fiber optic strand 20 incidents that is:.And then, as shown in Figure 5, in the present embodiment, because therefore direct welding coreless fiber 350 and sleeve pipe 310, can determine length and diameter so that the reflected light 341 at outgoing side end face 351 places directly is incident in the mode of sleeve pipe 310.
As mentioned above, reflected light 341 by outgoing side end face 351 reflections of the coreless fiber 350 of the front end that is connected in fiber optic strand 20 is incident under the situation of clad 22, also can prevent that reflected light 341 from arriving the situation of optical-fibre coating portion 30 by using the light input/output port 300 of present embodiment.
In the above embodiment, form sleeve pipe 110 by quartz glass or the material identical with clad 22, and, by having used arc discharge or CO
2The heating of laser instrument etc. is fused to clad 22 with sleeve pipe 110, integrated thus sleeve pipe 110 and clad 22, but by having the UV bonding agent of the refractive index that equates with quartz glass or clad, fixed sleeving 110 and clad 22 also can.
In addition, as optical fiber 10, except single core of above embodiment, use the so-called multi-core fiber that has more than the twin-core also can.Also have, sleeve pipe 110 does not need necessarily to form cylindrical shape, as section shape, can form have polygon, oval, oval various post shapes.
Under the sort of situation, second through hole 111 of sleeve pipe 110 selects to be fit to make the section shape of a plurality of or a plurality of optical fiber perforations.Specifically, for example, can form the shape roughly external with the section shape of a plurality of optical fiber that dispose (tying up) densely, promptly circle, polygonal shape, oval, elliptical shape or with roughly consistent shape of the section shape of these a plurality of optical fiber etc.In addition, also can a plurality of optical fiber through holes be set, to connect by each of each core of multi-core fiber at sleeve pipe 110.
Under the situation of using such multi-core fiber, first through hole 122 of shielding portion 121 is also selected the shape identical with second through hole 111 of the sleeve pipe 110 of the section shape of consistent a plurality of optical fiber in configuration roughly or near its shape, multi-core fiber is connected and can cover light leak.
Also have, described an example of the light input/output port of optics of the present invention in the record of present embodiment, be not limited to this.About the detailed structure of the light input/output port of the optics of present embodiment and detailed action etc., can in the scope that does not break away from aim of the present invention, suitably change.
Secondly, with reference to accompanying drawing, the embodiment of beam converting apparatus of the present invention is described.
Fig. 8 is the skeleton diagram that an example of first optical collimator of the present invention has been used in expression, and Fig. 8 (a) is the diagrammatic cross-section of optical collimator, and Fig. 8 (b) is the diagrammatic cross-section of single-core fiber patch cord (patch cord).
As shown in Figure 8, make from optical fiber and penetrate and the light signal of diffusion forms the optical collimator 510 of directional light and comprises: collimating apparatus framework 511, lasso 512, single-core fiber patch cord 513, lens 514, and lens fixture 515, single-core fiber patch cord 513 comprises: an optical fiber 516 and a coreless fiber 517.
In single-core fiber patch cord 513, utilize welding to be connected with coreless fiber 517 at the end face 516a of optical fiber 516.Single-core fiber patch cord 513 is adhesively fixed in lasso 512, and is fixed in the collimating apparatus framework 511.In addition, lens 514 utilize lens fixture 515 to be fixed in collimating apparatus framework 511.
The welding of coreless fiber 517 connects except the method for utilizing arc discharge, can use CO2 laser instrument etc.If the external diameter and the optical fiber 516 of the coreless fiber 517 of present embodiment differ widely, then both melting characteristics are different sometimes, and at this moment, it is effective using the method for CO2 laser instrument.These methods also are applicable in other embodiments of the present invention.
In addition, the external diameter of coreless fiber 517 is based on the beam diameter Φ a and the optical power density of optical fiber 516, forms to make welding be connected in the value that optical power density among the front end face 517a of coreless fiber 517 of optical fiber 516 becomes the scope of regulation.Thereby it is identical with the external diameter of optical fiber 516 that the external diameter of coreless fiber 517 does not need.Therefore, optical power density is stipulated according to the kind of optical fiber 516 and the light wavelength of use.
In addition, welding is connected in the length L of direction of transfer of light of the coreless fiber 517 of optical fiber 516, based on the beam diameter Φ a and the optical power density of optical fiber 516, ground or be cut to and make welding be connected in the value that optical power density among the front end face 517a of coreless fiber 517 of optical fiber 516 becomes the scope of regulation.In addition, welding is connected in the front end face 517a of coreless fiber 517 of optical fiber 516 in order to reduce reflection, tilts to grind or be cut to the angle (for example, 8 degree) of the scope of regulation, and then, implement antireflection such as AR coating and handle with coating.
For example, utilize the external diameter of coreless fiber 517 and length L control welding to be connected in the beam diameter Φ b of front end face 517a of the coreless fiber 517 of optical fiber 516, to become the optical power density that to guarantee the patience of the generation of heat that phenomenon such as fiber-fuse takes place.
In addition, lens 514 are various lens such as spherical lens, non-spherical lens, grin lens.
Fig. 9 is the skeleton diagram that expression has been suitable for an example of twin-core lassos such as another WDM filter module of the present invention.As shown in Figure 9, in twin-core lasso 520, twin-core fiber patch cord 521 utilizes bonding agent 522 to be adhesively fixed in shell 523.
In addition, twin-core fiber patch cord 521 comprises: 524,526 and coreless fiber 525 of two optical fiber, and utilize welding to be connected with coreless fiber 525 at end face 524a, the 526a of optical fiber.At this, coreless fiber 525 is refractive index glass rod or quartz rods identical with the core of optical fiber 524.In addition, twin-core fiber patch cord 521 utilizes welding to be connected in coreless fiber 525 simultaneously by the front end with two optical fiber 524 to make.
In addition, the external diameter of coreless fiber 525 is can utilize welding to be connected in the size at same interface two optical fiber 524,526 at least.And then the external diameter of coreless fiber 525 is based on the beam diameter and the optical power density of two optical fiber 524,526, forms to make welding be connected in the value that optical power density among the front end face 525a of coreless fiber 525 of two optical fiber 524,526 becomes the scope of regulation.
In addition, welding is connected in the length of direction of transfer of coreless fiber 525 of two optical fiber 524,526 based on the beam diameter and the optical power density of two optical fiber 524, is ground or be cut to make welding be connected in the value that optical power density among the front end face 525a of coreless fiber 525 of optical fiber 524,526 becomes the scope of regulation.
In addition, welding is connected in the front end face 525a of coreless fiber 525 of two optical fiber 524,526 in order to reduce reflection, tilts to grind or be cut to the angle (for example, 8 degree) of the scope of regulation, and then implements antireflection such as AR coating and handle with coating.
Secondly, other inventions of the twin-core fiber patch cord 521 in twin-core lasso 520 illustrated in fig. 9 are described.Figure 10 is the figure that is used to illustrate an example of twin-core fiber patch cord, and Figure 10 (a) is the diagrammatic cross-section of twin-core fiber patch cord, and Figure 10 (b) is the figure that is used to illustrate the structure member of twin-core fiber patch cord.
As shown in figure 10, twin-core fiber patch cord 530 comprises: two single-core fiber patch cords 531 and kapillary (capillary) 532.Kapillary 532 is made of quartz glass or glass material with the refractive index that equates with coreless fiber.Single-core fiber patch cord 531 comprises: an optical fiber 533 and a coreless fiber 534 as described in the explanation of reference Fig. 8.
Equally, single-core fiber patch cord 537 comprises: an optical fiber 535 and a coreless fiber 536.In addition, kapillary 532 is quartzy twin-core kapillaries, implements two in the hole of diameter part, identical respectively with the external diameter of coreless fiber 534,536 of the coreless fiber 534,536 that can insert two single-core fiber patch cords 531,537 or roughly the same diameter.
In twin-core fiber patch cord 530, insert two single-core fiber patch cords 531 to kapillary 532, carry out shrink process.In addition, be adhesively fixed the front end face 530a of twin-core fiber patch cord 530 of coreless fiber 534,536 of kapillary 532 and two single-core fiber patch cords 531,537 in order to reduce reflection, tilt to grind or be cut to regulation scope angle (for example, 8 degree), and then, implement antireflection coating processing such as AR coating.
In the coreless fiber 534,536 and capillaceous being adhesively fixed of above-mentioned optical fiber patch cords, use to have the refractive index that equates with coreless fiber 534,536, and with respect to the wavelength of use transparent organic and inorganic adhesive.In addition, do not use bondingly, utilize that the fusion of heating etc. is fixing also can.
As above-mentioned optical fiber, can also be suitable for the optical fiber that PCF (photonics crystallization optical fiber) and ACF (pressure dome clad optical fiber) etc. have emptying aperture.
Below, use Figure 11 that the beam converting apparatus of another embodiment of the present invention is described.Figure 11 is the cut-open view of expression as the structure of the optical collimator 540 of the beam converting apparatus of present embodiment.Appended shielding portion 546a in the lasso 546 of the optical collimator 540 of present embodiment.Kapillary 545 is fixed as, and covers the peripheral part of the coreless fiber 542 of the front end peripheral part 541a of optical fiber 541 and the front end face that welding is connected in optical fiber 541 integratedly.
Kapillary 545 has the refractive index that equates basically with the clad 543 of optical fiber 541, and the front end peripheral part 541a of optical fiber 541 and the peripheral part of coreless fiber 542 are connected airtight by heat treated.The refractive index of kapillary 545 and clad 543 for example all can be 1.45～1.46.Like this, pass through heat treated, kapillary 545 with the refractive index that equates basically with clad 543 is connected airtight with the front end peripheral part 541a of clad 543 and the peripheral part of coreless fiber 542, make thus to the light of the clad mould that clad 543 is revealed not by with the situation of the boundary reflection of kapillary 545 under, propagate to kapillary 545.
The light and then the irradiation lasso 546 of the clad mould of propagating to kapillary 545 are converted to heat at this, emit to the outside.In order to emit well to lasso 546 efficient from kapillary 545, the inside surface of kapillary 545 and lasso 546 connects airtight for good.
Like this, by heat treated integratedly, kapillary 545 and the front end peripheral part 541a of optical fiber 541 and the peripheral part of coreless fiber 542 are connected airtight, the light that can make in clad 543 the clad mould of revealing is emitted to external efficiencies well via kapillary 545 and optical collimator 540, can prevent the damage of optical fiber 541.Also have, the connecting airtight of front end peripheral part 541a of kapillary 545 and optical fiber 541, preferably utilized connecting airtight of heat treated, but be not limited thereto, and uses the bonding agent that has adopted regulation to carry out bonding method and also can.
In the optical collimator 540 of present embodiment, for the light that prevents the clad mould is propagated at kapillary 545, irradiation optical-fibre coating portion 544, it is good at lasso 546 shielding portion 546a being set.By shielding portion 546a is set, can prevent to propagate at kapillary 545, and the situation of irradiation optical-fibre coating portion 544.Leakage light 547 546a of crested portion reflection till the end of arrival kapillary 545 is propagated in kapillary 545 once more, simultaneously, emits to lasso 546.
As mentioned above, in the optical collimator 540 of present embodiment, by coreless fiber 542 is set, power density in the input/output terminal of reduction optical fiber 541, and, by utilizing heat treated that kapillary 545 and clad 543 and coreless fiber 542 are connected airtight, the light of clad mould is emitted to external efficiencies well via kapillary 545 and lasso 546.Thus, even the high light of input and output optical power density also can prevent the damage of optical fiber reliably.
And then, by shielding portion 546a being set, can prevent the rayed clad 543 of the clad mould of emitting to kapillary 545 at lasso 546, can prevent clad 543 damages.
Claims (32)
1, a kind of light input/output port of optics is characterized in that, possesses:
The waveguide road, the clad that it comprises core and covers the periphery of this core;
Flange, it has shielding portion midway inside surface, described waveguide road is inserted lead to first through hole that forms at described shielding portion, and an end is fixed in the lining portion that covers described waveguide road; With
Sleeve pipe with photopermeability, its have in second through hole that is formed centrally, described waveguide road is inserted leads to, and an end is fixed in the other end of described flange in described second through hole.
2, the light input/output port of optics according to claim 1 is characterized in that,
Described sleeve pipe is heated processing, is fused to described clad integratedly.
3, the light input/output port of optics according to claim 1 is characterized in that,
Described sleeve pipe and described clad in the certain mode of refractive index by bonding.
4, the light input/output port of optics according to claim 3 is characterized in that,
Described waveguide road and described sleeve pipe are bonding by the UV curing type bonding agent with the refractive index that equates with the clad on described waveguide road.
5, the light input/output port of optics according to claim 3 is characterized in that,
Described waveguide road and described sleeve pipe have the material of siloxane bond by use, and any of the light of the light of irradiating ultraviolet light, excimer laser, excited quasi-molecular lampbulb come bonding.
6, according to the light input/output port of each described optics in the claim 1～3, it is characterized in that,
Described sleeve pipe have with the refractive index of described clad about equally or than its big refractive index.
7, according to the light input/output port of each or the described optics of claim 6 in the claim 1～3, it is characterized in that,
The refractive index of described sleeve pipe is confirmed as: make from the remove rate of described clad to the light leak of described sleeve pipe to reach more than the setting.
8, according to the light input/output port of each described optics in the claim 1～7, it is characterized in that,
Described sleeve pipe is formed by quartz glass.
9, according to the light input/output port of each described optics in the claim 1～7, it is characterized in that,
Described sleeve pipe forms with the material identical with described clad.
10, according to the light input/output port of each described optics in the claim 1～7, it is characterized in that,
The connecting portion of the connecting portion of described flange and described sleeve pipe and described flange and described lining portion is that bonding agent fixes by thermotolerance inorganic adhesive or epoxy.
11, according to the light input/output port of each described optics in the claim 1～7, it is characterized in that,
The diameter and the length of described sleeve pipe are confirmed as: make from the remove rate of described clad to the light leak of described sleeve pipe to reach more than the setting.
12, according to the light input/output port of each described optics in the claim 1～7, it is characterized in that,
Described flange is formed by the metal material of stainless steel system.
13, according to the light input/output port of each described optics in the claim 1～7, it is characterized in that,
The end face on described waveguide road also welding be connected with the coreless fiber that refractive index equates with described core.
14, the light input/output port of optics according to claim 13 is characterized in that,
The length and the diameter of the optical axis direction of described coreless fiber are confirmed as: make from the power density of the light of described waveguide road incident to reduce to penetrate after the regulation ratio.
15, the light input/output port of optics according to claim 13 is characterized in that,
Side (end face) welding integratedly of described second through hole that described coreless fiber also has with described sleeve pipe after described sleeve pipe is heated processing.
16, the light input/output port of optics according to claim 13 is characterized in that,
Described coreless fiber and the end face opposite side of end face that is connected to described waveguide road, with respect to the optical axis on described waveguide road with the angle of regulation be tilted grind or cut off after, implement antireflection film.
17, a kind of beam converting apparatus makes parallel lightization and optically focusedization, it is characterized in that,
Possess optical fiber patch cords and lens, described optical fiber patch cords is that welding is connected with the front end of an optical fiber and does not have the parts that beam diameter enlarges a coreless fiber using core,
The external diameter of described coreless fiber does not depend on the external diameter of described optical fiber, and changes according to the luminous power of input light.
18, a kind of beam converting apparatus makes parallel lightization and optically focusedization, it is characterized in that,
Possess optical fiber patch cords and lens, described optical fiber patch cords is that welding is connected with the front end of many optical fiber and does not have the parts that beam diameter enlarges a coreless fiber using core on same interface.
19, beam converting apparatus according to claim 18 is characterized in that,
The external diameter of described coreless fiber is based on the external diameter of described many optical fiber and can welding connects the front end of described many optical fiber and the size of described coreless fiber on same interface at least.
20, a kind of beam converting apparatus makes parallel lightization and optically focusedization, it is characterized in that,
To connect in the front end welding of an optical fiber when not having beam diameter and enlarging with the parts after the coreless fiber of core as the single-core fiber patch cord,
Described beam converting apparatus possesses optical fiber patch cords and lens, and described optical fiber patch cords is that Postcapillary parts are fixed in bonding or fusion with the part of the described coreless fiber of one or more described single-core fiber patch cord.
21, beam converting apparatus according to claim 20 is characterized in that,
Described kapillary has: the part of the described coreless fiber of described one or more single-core fiber patch cord can be inserted, distinguish the hole of identical diameter or roughly the same diameter with the external diameter of described coreless fiber.
22, according to claim 20 or 21 described beam converting apparatus, it is characterized in that,
Described kapillary is quartz glass capillary or glass capillary with the refractive index that equates with coreless fiber.
23, according to each described beam converting apparatus in the claim 17～22, it is characterized in that,
The refractive index of described coreless fiber is identical with the refractive index of the core of described optical fiber.
24, according to each described beam converting apparatus in the claim 17～23, it is characterized in that,
Described coreless fiber is glass rod or quartz rod.
25, according to each described beam converting apparatus in the claim 17～24, it is characterized in that,
Based on the beam diameter of described optical fiber, and by the optical power density of the light wavelength defined of the kind of described optical fiber and use, the external diameter of described coreless fiber forms: the described optical power density of front end face that makes welding be connected in the described coreless fiber of described optical fiber becomes the value of the scope of regulation.
26, according to each described beam converting apparatus in the claim 17～25, it is characterized in that,
Based on the beam diameter of described optical fiber, and by the optical power density of the light wavelength defined of the kind of described optical fiber and use, the length of the direction of transfer of the light of the described coreless fiber of described optical fiber patch cords is ground or is cut to: the described optical power density of front end face that makes welding be connected in the described coreless fiber of described optical fiber becomes the value of the scope of regulation.
27, according to each described beam converting apparatus in the claim 17～26, it is characterized in that,
The front end face of the described coreless fiber of described optical fiber patch cords is tilted the angle of grinding or being cut to the scope of regulation.
28, according to each described beam converting apparatus in the claim 17～27, it is characterized in that,
At the front end face of the described coreless fiber of described optical fiber patch cords, implemented antireflection and handled with coating.
29, a kind of beam converting apparatus makes parallel lightization and optically focusedization, it is characterized in that, possesses:
Optical fiber patch cords, its welding are connected with end face and coreless fiber of an optical fiber;
Kapillary, the outer peripheral face of itself and described optical fiber patch cords connects airtight;
Lasso, it covers the lining portion and the described kapillary of described optical fiber integratedly; With
Lens, it makes incident light be concentrated on described coreless fiber, or makes the ejaculation parallel lightization from described coreless fiber.
30, beam converting apparatus according to claim 29 is characterized in that,
Described optical fiber patch cords and described kapillary are connected airtight by heat treated.
31, beam converting apparatus according to claim 29 is characterized in that,
The refractive index of the clad of described refractive index capillaceous and described optical fiber about equally.
32, beam converting apparatus according to claim 29 is characterized in that,
Described lasso has shielding portion between the lining portion of described optical fiber patch cords and described optical fiber.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP092510/2006 | 2006-03-29 | ||
| JP2006091973 | 2006-03-29 | ||
| JP091973/2006 | 2006-03-29 | ||
| JP079345/2007 | 2007-03-26 | ||
| JP079051/2007 | 2007-03-26 |
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| CN101395513A true CN101395513A (en) | 2009-03-25 |
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| CNA2007800072008A Pending CN101395513A (en) | 2006-03-29 | 2007-03-28 | Light input/output port of optical component and beam converting apparatus |
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| CN111665594A (en) * | 2019-03-05 | 2020-09-15 | 住友电气工业株式会社 | Optical connection structure |
| CN111665594B (en) * | 2019-03-05 | 2024-05-24 | 住友电气工业株式会社 | Optical connection structure |
| CN114341689A (en) * | 2019-08-28 | 2022-04-12 | 京瓷株式会社 | Optical module and optical module |
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