CN102662215B - A kind of wavelength-division multiplex photoelectricity transmitter module - Google Patents
A kind of wavelength-division multiplex photoelectricity transmitter module Download PDFInfo
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Abstract
The present invention relates to a kind of wavelength-division multiplex photoelectricity transmitter module, this module includes polarization beam splitter prism and generating laser, the outgoing in described polarization beam splitter prism is coupled to same optical fiber of the laser beam of the different wave length that multiple generating lasers send, between at least one laser beam and polarization beam splitter prism, be provided with sandwich optical module, described sandwich optical module is made up of a filter plate and two quarter-wave plates, and described quarter-wave plate is positioned at the both sides of filter plate to form Layer cake structure; Make polarization direction 90-degree rotation with the laser beam of described filter plate transmission peak wavelength transmitted through described sandwich optical module, other wave length laser beams to described sandwich optical module outgoing reflect through quarter-wave plate transmission and described filter plate, again make polarization direction 90-degree rotation through described quarter-wave plate. Wavelength-division multiplex photoelectricity transmitter module of the present invention can be realized the concentrated transmitting of multiwavelength laser light beam in less space, has reduced cost of manufacture.
Description
Technical field
The present invention relates to optical field, specially refer to a kind of for the laser beam of multiple wavelength being merged to the wavelength-division multiplex photoelectricity transmitter module of transmission.
Background technology
Structure and the operation principle of current division multiplex fibre-optic communication wave system are as follows: transmitting terminal, and first two or more signals of telecommunication are utilized photoemission module to change into the optical signal of different wave length, exported by two or multifiber; Then utilize optical multiplexer that the optical signal of different wave length is merged in same optical fiber and transmitted; At receiving terminal, the optical signal of various wavelength is separated to two or multifiber by recycling demodulation multiplexer; Finally utilize photoreceiver Jiang Ge road signal to change into respectively the signal of telecommunication.
In prior art, tradition free space optical learns a skill and has the shortcoming of " Z " font light path, for effectively transmitting, light path do not blocked, light beam is tiltedly got on each tablet filter with a larger incident angle, size thereby change are large on the one hand, another invention, and larger incident angle has brought polarization effect, also high to the requirement of optical filter, realize cost larger.
Summary of the invention
The object of the invention is to overcome the deficiency that above-mentioned prior art exists, a kind of new wavelength-division multiplex photoelectricity transmitter module is provided. Wavelength-division multiplex photoelectricity transmitter module of the present invention is wanted in less space, to realize the concentrated transmitting of multiwavelength laser light beam, and the requirement of filter plate is reduced to reduce costs.
In order to reach foregoing invention object, the technical scheme that patent of the present invention provides is as follows:
A kind of wavelength-division multiplex photoelectricity transmitter module, it is characterized in that, this module includes polarization beam splitter prism and generating laser, the outgoing in described polarization beam splitter prism is coupled to same optical fiber of the laser beam of the different wave length that multiple generating lasers send, between at least one laser beam and polarization beam splitter prism, be provided with sandwich optical module, described sandwich optical module is made up of a filter plate and two quarter-wave plates, and described quarter-wave plate is positioned at the both sides of filter plate to form Layer cake structure; Make polarization direction 90-degree rotation with the laser beam of described filter plate transmission peak wavelength transmitted through described sandwich optical module, other wave length laser beams to described sandwich optical module outgoing reflect through quarter-wave plate transmission and described filter plate, again make polarization direction 90-degree rotation through described quarter-wave plate.
As the implementation of a kind of 3 passages of wavelength-division multiplex photoelectricity transmitter module of the present invention, this module includes a polarization beam splitter prism and three generating lasers, the laser beam wavelength that three described generating lasers send is respectively λ 1, λ 2 and λ 3, wherein wavelength X 1 generating laser is positioned at longitudinal side of polarization beam splitter prism, the polarization state of wavelength X 1 laser beam is P state, wavelength X 2 generating lasers and wavelength X 3 generating lasers are respectively in the both lateral sides of polarization beam splitter prism relatively to send laser beam, the polarization state of wavelength X 2 laser beams is P state, the polarization state of wavelength X 3 laser beams is P state, in wavelength X 1, in the light path of λ 2 and λ 3 laser beams, be respectively equipped with λ 1 filter plate of corresponding wavelength, λ 2 filter plates and λ 3 filter plates, respectively be provided with a quarter-wave plate in the both sides of wavelength X 3 filter plates to form described sandwich optical module, spend the wavelength X 2 of reflection and λ 3 laser beam line focus Lens Coupling to same optical fiber by wavelength X 1 laser beam of polarization beam splitter prism transmission with by reflection of polarization face in polarization beam splitter prism 90.
As the implementation of another kind 3 passages of wavelength-division multiplex photoelectricity transmitter module of the present invention, this module includes a polarization beam splitter prism and three generating lasers, the laser beam wavelength that three described generating lasers send is respectively λ 1, λ 2 and λ 3, wherein wavelength X 1 generating laser is positioned at longitudinal side of polarization beam splitter prism, the polarization state of wavelength X 1 laser beam is P or S state, wavelength X 2 generating lasers and wavelength X 3 generating lasers are respectively in the both lateral sides of polarization beam splitter prism relatively to send laser beam, the polarization state of wavelength X 2 laser beams is S state, the polarization state of wavelength X 3 laser beams is P state, in wavelength X 1, in the light path of λ 2 and λ 3 laser beams, be respectively equipped with λ 1 filter plate of corresponding wavelength, λ 2 filter plates and λ 3 filter plates, respectively be provided with a quarter-wave plate in the both sides of wavelength X 2 filter plates to form described sandwich optical module, respectively be provided with a quarter-wave plate in the both sides of wavelength X 3 filter plates to form described sandwich optical module, by the wavelength X 1 of polarization beam splitter prism outgoing, λ 2 and λ 3 laser beam line focus Lens Coupling are to same optical fiber.
In wavelength-division multiplex photoelectricity transmitter module of the present invention, as a kind of alternative structure, except the horizontal side at described polarization beam splitter prism is provided with sandwich optical module and laser beam, also be provided with the combination of a quarter-wave plate and completely reflecting mirror at the relative horizontal opposite side of polarization beam splitter prism, through quarter-wave plate transmission and the reflection of described completely reflecting mirror, again make polarization direction 90-degree rotation through described quarter-wave plate to completely reflecting mirror emitting laser light beam.
As the implementation of the third 3 passage of wavelength-division multiplex photoelectricity transmitter module of the present invention, this module includes two polarization beam splitter prisms and three generating lasers, the laser beam wavelength that three described generating lasers send is respectively λ 1, λ 2 and λ 3, wavelength X 1 generating laser, the first polarization beam splitter prism and the second polarization beam splitter prism are arranged in order along straight line, the polarization state of wavelength X 1 laser beam is P or S state, wavelength X 2 generating lasers and wavelength X 3 generating lasers lay respectively at horizontal the same side of the first polarization beam splitter prism and the second polarization beam splitter prism, respectively be placed with a quarter-wave plate and completely reflecting mirror combination at the horizontal opposite side of the first polarization beam splitter prism and the second polarization beam splitter prism, the polarization state of wavelength X 2 laser beams and wavelength X 3 laser beams is S state, in wavelength X 1, in the light path of λ 2 and λ 3 laser beams, be respectively equipped with λ 1 filter plate of corresponding wavelength, λ 2 filter plates and λ 3 filter plates, respectively be provided with a quarter-wave plate in the both sides of wavelength X 2 filter plates to form described sandwich optical module, respectively be provided with a quarter-wave plate in the both sides of wavelength X 3 filter plates to form described sandwich optical module, by the wavelength X 1 of the second polarization beam splitter prism outgoing, λ 2 and λ 3 laser beam line focus Lens Coupling are to same optical fiber.
As the multichannel implementation of one of wavelength-division multiplex photoelectricity transmitter module of the present invention, between described polarization beam splitter prism and condenser lens, be also provided with at least one new polarization beam splitter prism, respectively be provided with the new generating laser that sends different wave length laser beams in the both lateral sides of new polarization beam splitter prism, one of the polarization state of new laser beam that generating laser is sent out is P state, one is S state, between each new generating laser and polarization beam splitter prism, be equipped with the filter plate of respective wavelength and be distributed in two quarter-wave plates of the filter plate both sides of respective wavelength, new polarization beam splitter prism emitting laser light beam is coupled in same optical fiber by condenser lens.
As the multichannel implementation of another kind of wavelength-division multiplex photoelectricity transmitter module of the present invention, , between described the second polarization beam splitter prism and condenser lens, be also provided with at least one new polarization beam splitter prism, a horizontal side of new polarization beam splitter prism is provided with the new generating laser of a transmitting different wave length laser beams, relative horizontal opposite side is provided with full transmitting prism, one of the polarization state of new laser beam that generating laser is sent out is S state, between new generating laser and new polarization beam splitter prism, be equipped with the filter plate of respective wavelength and be distributed in two quarter-wave plates of the filter plate both sides of respective wavelength, between completely reflecting mirror and new polarization beam splitter prism, be provided with quarter-wave plate.
Based on technique scheme, wavelength-division multiplex photoelectricity transmitter module of the present invention compared with prior art has following technological merit:
The present invention learns a skill and has realized the light of multiple generating lasers is exported from same optical fiber in a compact space with free space optical, and owing to having utilized innovatively the combination of quarter-wave plate and speculum or optical filter, realize light path Yuan road round-trip transmission, thereby can zero degree incident use optical filter. It is large and realize the shortcoming that cost is high that this invention has overcome the learn a skill size of " Z " font light path of traditional free space optical.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1 in wavelength-division multiplex photoelectricity transmitter module of the present invention.
Fig. 2 is the structural representation of embodiment 3 in wavelength-division multiplex photoelectricity transmitter module of the present invention.
Fig. 3 is the structural representation of embodiment 4 in wavelength-division multiplex photoelectricity transmitter module of the present invention.
Fig. 4 is the structural representation of embodiment 5 in wavelength-division multiplex photoelectricity transmitter module of the present invention.
Detailed description of the invention
We do further and elaborate wavelength-division multiplex photoelectricity transmitter module of the present invention with specific embodiment by reference to the accompanying drawings below, in the hope of more cheer and bright, its architectural feature and workflow are described, but can not limit the scope of the invention with this.
Wavelength-division multiplex photoelectricity transmitter module of the present invention structurally includes polarization beam splitter prism and generating laser, and overall thought is laser beam outgoing in polarization beam splitter prism is coupled to same optical fiber of different wave length that multiple generating lasers are sent. In order to achieve the above object, between at least one laser beam and polarization beam splitter prism, be provided with sandwich optical module, described sandwich optical module is made up of a filter plate and two quarter-wave plates, and described quarter-wave plate is positioned at the both sides of filter plate to form Layer cake structure. This Layer cake structure has following features: make polarization direction 90-degree rotation with the laser beam of described filter plate transmission peak wavelength transmitted through described sandwich optical module, both the polarization direction 90-degree rotation of the laser beam of P polarization state can have been formed to the laser beam of S polarization state, the polarization direction 90-degree rotation of the laser beam of S polarization state can have been formed again to the laser beam of P polarization state. And reflect through quarter-wave plate transmission and described filter plate to other wave length laser beams of described sandwich optical module outgoing, again make polarization direction 90-degree rotation through described quarter-wave plate, equally also can realize the conversion of P polarization state and S polarization state.
As a kind of alternative structure, except the horizontal side at described polarization beam splitter prism is provided with sandwich optical module and laser beam, also be provided with the combination of a quarter-wave plate and completely reflecting mirror at the relative horizontal opposite side of polarization beam splitter prism, through quarter-wave plate transmission and the reflection of described completely reflecting mirror, again make polarization direction 90-degree rotation through described quarter-wave plate to completely reflecting mirror emitting laser light beam. The conversion of the polarization state that the combination of completely reflecting mirror and quarter-wave plate can complete any wave length laser beams between P and S.
As a characteristic of polarization beam splitter prism, the whole transmissions of its laser beam to P polarization state, and the laser beam of S polarization state is all reflected, be to penetrate after making the laser beam direction of propagation of the S polarization state of incident rotate 90 degree by its reflection of polarization face.
The present invention is exactly the difference setting that utilizes the combination of polarization beam splitter prism, sandwich optical module and quarter-wave plate and completely reflecting mirror, realize the laser beam of multiple different wave lengths is coupled in same root optical fiber, to reach manufacturing and designing of new structure type wavelength-division multiplex photoelectricity transmitter module.
Embodiment 1
Please see Figure 1, as seen from the figure, the present embodiment is 5 passage wavelength division multiplexed light electricity transmitter modules, comprising five generating laser LD, send accordingly respectively the laser beam of five kinds of different wave lengths, λ 1, λ 2, λ 3, λ 4 and λ 5, the polarization state of laser beam is respectively: the laser beam polarization state of wavelength X 1 is P state, the laser beam polarization state of wavelength X 2 is S state, the laser beam polarization state of wavelength X 3 is P state, the laser beam polarization state of wavelength X 4 is S state, and the laser beam polarization state of wavelength X 5 is P state. The polarization state of laser beam is to represent with strigula in P state figure, and the polarization state of laser beam is to represent with black circle in S state figure. In addition, wavelength-division multiplex photoelectricity transmitter module also includes two polarization beam splitter prisms and five and is directed to respectively the filter plate of wavelength X 1, λ 2, λ 3, λ 4 and λ 5, wherein, be directed in four filter plates of wavelength X 2, λ 3, λ 4 and λ 5, the both sides of each filter plate are respectively provided with a quarter-wave plate, in this quarter-wave plate figure, represent with λ/4. Send the generating laser LD(λ 1 of wavelength X 1), the first polarization beam splitter prism and the second polarization beam splitter prism place successively along straight line. Wherein, send the generating laser LD(λ 2 of wavelength X 2) and send the generating laser LD(λ 3 of wavelength X 3) being placed in respectively the both lateral sides of the first polarization beam splitter prism, the laser beam sending is relatively incident in the first polarization beam splitter prism; Send the generating laser LD(λ 4 of wavelength X 4) and send the generating laser LD(λ 5 of wavelength X 5) being placed in respectively the both lateral sides of the second polarization beam splitter prism, the laser beam sending is relatively incident in the second polarization beam splitter prism. Finally, including wavelength X 1, λ 2, λ 3, λ 4 and λ 5 synthetic laser light beams is coupled in same optical fiber and is exported by condenser lens 6.
Because polarization beam splitter prism is for the light beam total transmissivity of P polarization state, for the light beam total reflection of S polarization state, the present invention utilizes this principle exactly, and the laser beam of the different wave length that different generating lasers are sent is coupled in same optical fiber to be exported. In order to obtain the light beam of single wavelength, we are respectively provided with a filter plate in the light path of each generating laser, its objective is the light of respective wavelength can be passed through, and the light of other wavelength is reflected back.
In the present embodiment, the laser beam polarization state of wavelength X 1 is P state, and it is directly through wavelength X 1 filter plate, the first polarization beam splitter prism and the second polarization beam splitter prism, and the laser beam polarization state of wavelength X 2 is S state, it is first through a quarter-wave plate, make laser beam be converted to circularly polarized light from S polarised light, and then through wavelength X 2 filter plates and another quarter-wave plate, become P polarised light from circularly polarized light and be incident to the first polarization beam splitter prism. the laser beam polarization state of wavelength X 3 is P state, it is first through a quarter-wave plate, laser beam is converted to circularly polarized light from P polarised light, and then through wavelength X 2 filter plates and another quarter-wave plate, its polarization state is converted into S state from circularly polarized light again and is incident to the first polarization beam splitter prism. due to the characteristic of polarization beam splitter prism, be directed to wavelength X 2 and wavelength X 3 laser beams of relative position incident, wavelength X 2 laser beams of P polarization state are from the first polarization beam splitter prism transmission, then make laser beam be converted to circularly polarized light from linearly polarized light through quarter-wave plate, then encountering wavelength X 3 filter plates reflects, again make circularly polarized light become linearly polarized light through quarter-wave plate, its polarization state 90-degree rotation become S state, when wavelength X 2 laser beams reach the first polarization beam splitter prism again like this, the same with the polarization state of wavelength X 3 laser beams is all S state, thereby longitudinally export the second polarization beam splitter prism to after reflection of polarization face reflection 90 degree by the first polarization beam splitter prism.
The polarization state that is positioned at wavelength X 4 that the generating laser of the second polarization beam splitter prism both lateral sides sends and wavelength X 5 laser beams is the same with the polarization state of wavelength X 3 laser beams with the wavelength X 2 of the first polarization beam splitter prism both sides respectively. In its light path the setting of quarter-wave plate and filter plate too, therefore its can cause equally wavelength X 4 and wavelength X 5 laser beams with S polarization state from the second polarization beam splitter prism longitudinal output. Because the wavelength X 2 of the S state from the first polarization beam splitter prism outgoing can make polarization state 90-degree rotation become P state with twice through four point of one wave plate through wavelength X 4 filter plate reflections with wavelength X 3 laser beams, make polarization state 90-degree rotation become S state with twice through four point of one wave plate by wavelength X 5 filter plate reflections again, thus longitudinally output after reflection of polarization face reflection 90 degree of the second polarization beam splitter prism.
From the above, having comprised wavelength X 1 laser beam that polarization state is P state and polarization state from the second polarization beam splitter prism longitudinal emitting laser light beam is that the synthetic light beam of λ 2, λ 3, λ 4 and λ 5 laser beams of S state is coupled to same optical fiber and is exported by condenser lens.
Embodiment 2
Structure in the present embodiment and light path and embodiment 1 are roughly the same, and difference is, the laser beam polarization state of wavelength X 1 is S state, but not P state. Like this, wavelength X 1 laser beam of S state can longitudinally reflect through the reflection of polarization face of the first polarization beam splitter prism, first through a quarter-wave plate, make linearly polarized light be converted into circularly polarized light, then after wavelength X 2 filter plates reflections through same quarter-wave plate, be converted to linearly polarized light from circularly polarized light again, its polarization state 90-degree rotation becomes P polarised light and is laterally incident in the first polarization beam splitter prism. Laterally outgoing of edge after transmission from the first polarization beam splitter prism, first through a quarter-wave plate, make linearly polarized light be converted into circularly polarized light, then after wavelength X 3 filter plates reflections through same quarter-wave plate, be converted to linearly polarized light from circularly polarized light again, its polarization state 90-degree rotation becomes S polarised light and is laterally incident in the first polarization beam splitter prism, and the 90 degree reflections of the reflection of polarization face of the first polarization beam splitter prism, along longitudinal outgoing of the first polarization beam splitter prism. Same light path walking manner ground after the second polarization beam splitter prism with the longitudinal outgoing of S state. Like this, in the present embodiment, wavelength X 1, λ 2, λ 3, λ 4 and 5 five laser beams of λ are all coupled in same optical fiber and are exported by condenser lens with the synthetic light beam of S polarization state.
Embodiment 3
As shown in Figure 2, the present embodiment and embodiment 1 are roughly the same, difference is that the laser beam polarization state of wavelength X 2 is P state, this laser beam can see through after wavelength X 2 filter plates directly into being incident upon in the first polarization beam splitter prism and transmission like this, make polarization converted become S state through quarter-wave plate and wavelength X 3 filter plate combinations again, then be incident in the first polarization beam splitter prism through the 90 degree reflections of reflection of polarization face. The reason of doing is like this, because the laser beam polarization state of wavelength X 1 is P state, it is directly through wavelength X 1 filter plate, the first polarization beam splitter prism and the second polarization beam splitter prism. It does not need just can be from the first polarization beam splitter prism transmission through polarization converted, and the laser beam polarization state of wavelength X 3 is to become S state after P state conversion 90 degree, directly by the first polarization beam splitter prism through the 90 degree reflections of reflection of polarization face. From structure arranges, only need to place wavelength X 2 filter plates sending between the generating laser of wavelength X 2 laser beams and the first polarization beam splitter prism, and not need to place quarter-wave plate.
Embodiment 4
As shown in Figure 3, the present embodiment is a triple channel photoemission module, and it includes a polarization beam splitter prism, three generating lasers, and three generating lasers send respectively the laser beam of three kinds of different wave lengths: λ 1, λ 2 and λ 3 accordingly. Wherein, the laser beam polarization state of wavelength X 1 is P or for S state, the laser beam polarization state of wavelength X 2 is S state, and the laser beam polarization state of wavelength X 3 is P state. Wavelength be two laser beams of λ 2 and λ 3 along the relative incident of both lateral sides of polarization beam splitter prism, the laser beam of wavelength X 1 is along longitudinal side incident of polarization beam splitter prism.
Based on same operation principle, if the laser beam polarization state of wavelength X 1 is P state, comprises polarization state and be λ 2 that wavelength X 1 laser beam of P state and polarization state are S state and the synthetic light beam scioptics of λ 3 laser beams and be coupled in same optical fiber and export.
If the laser beam polarization state of wavelength X 1 is S state, wavelength X 1, λ 2 and λ 3 laser beams are all coupled in same optical fiber and are exported by condenser lens with the synthetic light beam of S polarization state.
Embodiment 5
As shown in Figure 4, the present embodiment is the structure alienation of triple channel photoemission module, includes three generating lasers and two polarization beam splitter prisms in its structure, and the filter plate of three respective wavelength. Three generating lasers send respectively the laser beam of three kinds of different wave lengths: λ 1, λ 2 and λ 3 accordingly. Wherein, the laser beam polarization state of wavelength X 1 is P or for S state, the laser beam polarization state of wavelength X 2 is S state, and the laser beam polarization state of wavelength X 3 is S state.
In the present embodiment, the laser beam polarization state of wavelength X 1 is P state, and it is directly successively through wavelength X 1 filter plate 1, the first polarization beam splitter prism 4 and the second polarization beam splitter prism 5. Be provided with the generating laser LD(λ 2 of the laser beam of emission wavelength lambda 2 in a horizontal side of the first polarization beam splitter prism 4), its relative horizontal opposite side is provided with a completely reflecting mirror 7. At the generating laser LD(λ 2 of the laser beam of emission wavelength lambda 2) and the first polarization beam splitter prism 4 between be provided with a λ 2 filter plates 2, two quarter-wave plate λ/4, between completely reflecting mirror 7 and the first polarization beam splitter prism 4, be provided with quarter-wave plate λ/4.
The laser beam of wavelength X 2 makes polarization state 90-degree rotation become P state along being laterally incident to the first polarization beam splitter prism 4 through quarter-wave plate, wavelength X 2 filter plates 2, quarter-wave plate successively, by the laser beam of the wavelength X 2 of the first polarization beam splitter prism 4 horizontal opposite side outgoing first through a quarter-wave plate, and then again pass through quarter-wave plate after completely reflecting mirror 7 reflections, make its polarization state 90-degree rotation become S state and be laterally incident to the first polarization beam splitter prism 4, after the 90 degree reflections of reflection of polarization face, be incident to the second polarization beam splitter prism 5.
Wavelength is that the laser beam of λ 3 is also to become P state through two quarter-wave plate rear polarizer states, and the laser beam S polarization state of wavelength X 2 reflexes to horizontal outgoing through reflection of polarization face 90 degree after being incident to the second polarization spectroscope 5, reflect through wavelength X 3 filter plates 3, make polarization state 90-degree rotation be P state through quarter-wave plate twice, it is along being laterally incident to the second polarization beam splitter prism 5, by the laser beam of the wavelength X 3 of the second polarization beam splitter prism 5 horizontal opposite side outgoing first through a quarter-wave plate, and then again pass through quarter-wave plate after completely reflecting mirror 8 reflections, make its polarization state 90-degree rotation become S state and be laterally incident to the second polarization beam splitter prism, outgoing after the 90 degree reflections of reflection of polarization face, synthesizing a branch of laser beam is coupled in same optical fiber and is exported by condenser lens 6.
Based on same operation principle, if the laser beam polarization state of wavelength X 1 is S state, wavelength X 1, λ 2 and λ 3 laser beams are all coupled in same optical fiber and are exported by condenser lens with the synthetic light beam of S polarization state.
Except 5 passages and 3 passages, under design philosophy of the present invention, can also increase more polarization beam splitter prism and realize more multichannel laser coupled output.
The present invention is that the light of realizing the different wave length of multiple generating lasers in a compact free space is exported from same optical fiber. Its core is to utilize the combination of two quarter-wave plates and filter plate, or the combination of quarter-wave plate and completely reflecting mirror realizes the round-trip transmission of light path, thereby can zero degree incident use filter plate.
Claims (2)
1. a wavelength-division multiplex photoelectricity transmitter module, this module includes polarization beam splitter prism and generating laser, the outgoing in described polarization beam splitter prism is coupled to same optical fiber of the laser beam of the different wave length that multiple generating lasers send, between at least one laser beam and polarization beam splitter prism, be provided with sandwich optical module, described sandwich optical module is made up of a filter plate and two quarter-wave plates, described quarter-wave plate is positioned at the both sides of filter plate to form Layer cake structure, at least one side of both lateral sides of described polarization beam splitter prism is provided with a sandwich optical module, make polarization direction 90-degree rotation with the laser beam of described filter plate transmission peak wavelength transmitted through described sandwich optical module, other wave length laser beams to described sandwich optical module outgoing reflect through quarter-wave plate transmission and described filter plate, again make polarization direction 90-degree rotation through described quarter-wave plate, it is characterized in that, this module includes a polarization beam splitter prism and three generating lasers, the laser beam wavelength that three described generating lasers send is respectively λ 1, λ 2 and λ 3, wherein wavelength X 1 generating laser is positioned at longitudinal side of polarization beam splitter prism, the polarization state of wavelength X 1 laser beam is P state, wavelength X 2 generating lasers and wavelength X 3 generating lasers are respectively in the both lateral sides of polarization beam splitter prism relatively to send laser beam, the polarization state of wavelength X 2 laser beams is P state, the polarization state of wavelength X 3 laser beams is P state, in wavelength X 1, in the light path of λ 2 and λ 3 laser beams, be respectively equipped with λ 1 filter plate of corresponding wavelength, λ 2 filter plates and λ 3 filter plates, respectively be provided with a quarter-wave plate in the both sides of wavelength X 3 filter plates to form described sandwich optical module, spend the wavelength X 2 of reflection and λ 3 laser beam line focus Lens Coupling to same optical fiber by wavelength X 1 laser beam of polarization beam splitter prism transmission with by reflection of polarization face in polarization beam splitter prism 90, between described polarization beam splitter prism and condenser lens, be also provided with at least one new polarization beam splitter prism, respectively be provided with the new generating laser that sends different wave length laser beams in the both lateral sides of new polarization beam splitter prism, one of the polarization state of new laser beam that generating laser is sent out is P state, one is S state, between each new generating laser and polarization beam splitter prism, be equipped with the filter plate of respective wavelength and two quarter-wave plate to form described sandwich optical module, new polarization beam splitter prism emitting laser light beam is coupled in same optical fiber by condenser lens.
2. a wavelength-division multiplex photoelectricity transmitter module, this module includes polarization beam splitter prism and generating laser, the outgoing in described polarization beam splitter prism is coupled to same optical fiber of the laser beam of the different wave length that multiple generating lasers send, between at least one laser beam and polarization beam splitter prism, be provided with sandwich optical module, described sandwich optical module is made up of a filter plate and two quarter-wave plates, described quarter-wave plate is positioned at the both sides of filter plate to form Layer cake structure, at least one side of both lateral sides of described polarization beam splitter prism is provided with a sandwich optical module, make polarization direction 90-degree rotation with the laser beam of described filter plate transmission peak wavelength transmitted through described sandwich optical module, other wave length laser beams to described sandwich optical module outgoing reflect through quarter-wave plate transmission and described filter plate, again make polarization direction 90-degree rotation through described quarter-wave plate, it is characterized in that, this module includes a polarization beam splitter prism and three generating lasers, the laser beam wavelength that three described generating lasers send is respectively λ 1, λ 2 and λ 3, wherein wavelength X 1 generating laser is positioned at longitudinal side of polarization beam splitter prism, the polarization state of wavelength X 1 laser beam is P or S state, wavelength X 2 generating lasers and wavelength X 3 generating lasers are respectively in the both lateral sides of polarization beam splitter prism relatively to send laser beam, the polarization state of wavelength X 2 laser beams is S state, the polarization state of wavelength X 3 laser beams is P state, in wavelength X 1, in the light path of λ 2 and λ 3 laser beams, be respectively equipped with λ 1 filter plate of corresponding wavelength, λ 2 filter plates and λ 3 filter plates, respectively be provided with a quarter-wave plate in the both sides of wavelength X 2 filter plates to form described sandwich optical module, respectively be provided with a quarter-wave plate in the both sides of wavelength X 3 filter plates to form described sandwich optical module, by the wavelength X 1 of polarization beam splitter prism outgoing, λ 2 and λ 3 laser beam line focus Lens Coupling are to same optical fiber, between described polarization beam splitter prism and condenser lens, be also provided with at least one new polarization beam splitter prism, respectively be provided with the new generating laser that sends different wave length laser beams in the both lateral sides of new polarization beam splitter prism, one of the polarization state of new laser beam that generating laser is sent out is P state, one is S state, between each new generating laser and polarization beam splitter prism, be equipped with the filter plate of respective wavelength and two quarter-wave plate to form described sandwich optical module, new polarization beam splitter prism emitting laser light beam is coupled in same optical fiber by condenser lens.
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| CN103257403B (en) * | 2013-05-20 | 2016-01-20 | 武汉锐奥特科技有限公司 | A kind of wavelength-division multiplex optical device and Wave Decomposition multiplexed optical device |
| CN103905120A (en) * | 2014-04-27 | 2014-07-02 | 桂林理工大学 | Cordwood visible light communication color division multiplex experimental device |
| CN104934841A (en) * | 2015-06-23 | 2015-09-23 | 南京朗研光电科技有限公司 | High-energy pulse laser separation and compression method and device |
| CN105911535B (en) * | 2016-06-12 | 2018-06-29 | 中国科学院上海技术物理研究所 | Wavelength-division multiplex detection system similar in a kind of laser radar multi-wavelength |
| CN108535811A (en) * | 2018-03-21 | 2018-09-14 | 武汉电信器件有限公司 | A kind of the transmitting optical device and method of polarized composite wave multiplexing |
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| US6493121B1 (en) * | 1998-04-30 | 2002-12-10 | Infineon Technologies Ag | Bidirectional module for multichannel use |
| CN101080660A (en) * | 2004-02-05 | 2007-11-28 | 奥普林克通信公司 | Integrated optical multiplexer and demultiplexer |
| CN202649536U (en) * | 2012-05-09 | 2013-01-02 | 无锡波汇光电科技有限公司 | Photoelectric emission module |
-
2012
- 2012-05-09 CN CN201210140318.0A patent/CN102662215B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6493121B1 (en) * | 1998-04-30 | 2002-12-10 | Infineon Technologies Ag | Bidirectional module for multichannel use |
| CN101080660A (en) * | 2004-02-05 | 2007-11-28 | 奥普林克通信公司 | Integrated optical multiplexer and demultiplexer |
| CN202649536U (en) * | 2012-05-09 | 2013-01-02 | 无锡波汇光电科技有限公司 | Photoelectric emission module |
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| CN102662215A (en) | 2012-09-12 |
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