CN105891959B - A kind of wavelength multiplexing optics device - Google Patents
A kind of wavelength multiplexing optics device Download PDFInfo
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- CN105891959B CN105891959B CN201610437422.4A CN201610437422A CN105891959B CN 105891959 B CN105891959 B CN 105891959B CN 201610437422 A CN201610437422 A CN 201610437422A CN 105891959 B CN105891959 B CN 105891959B
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- wavelength
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- multiplexed
- tff
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29302—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means based on birefringence or polarisation, e.g. wavelength dependent birefringence, polarisation interferometers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
- G02B6/29389—Bandpass filtering, e.g. 1x1 device rejecting or passing certain wavelengths
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The present invention provides a kind of wavelength multiplexing optics device, including TFF device (1) and polarization beam splitter prism device (2), four tunnel optical wavelength are multiplexed into the optical wavelength that two-way is multiplexed two-by-two in such a way that non-adjacent light wave appearance two-by-two is multiplexed and respectively enter the polarization beam splitter prism device (2) by the TFF device (1)；By this two-way, multiplexed optical wavelengths are complex as all the way with orthogonal polarization mode the polarization beam splitter prism device (2) two-by-two.In optical assembly device of the present invention, TFF block is to be multiplexed non-adjacent wavelength Λ 1 and Λ 3, Λ 2 and Λ 4, can relax 1 times relative to traditional TFF block to the intermediate zone band merit of band logical diaphragm, reduce the manufacture difficulty and cost of band logical diaphragm.
Description
Technical field
The present invention relates to a kind of optical assembly devices of wavelength multiplexing, multiple more particularly to the shorter wavelength in wavelength interval
With the invention belongs to the communications fields.
Background technique
In Modern Communication System, as the capacity that system is transmitted is increasing, to wavelength multiplexing in package of optical device
It is also shorter and shorter for the channel spacing of wavelength multiplexing using also more and more.Especially for the high speed of short-distance and medium-distance transmission
In optical device, the demand of CWDM and LAN-WDM wavelength multiplexing is increasing, and channel spacing is from 20nm to the LAN-WDM's of CWDM
4.5nm.In the shorter and shorter application in this wavelength channel interval, traditional TFF Block wavelength multiplexing, each TFF membrane
The case where piece is limited to this channel Insertion Loss and adjacent channel isolation index request, and there are intermediate zone Bandwidth-Constraineds, then causes
The pass band width of TFF Block is unable to the wavelength bandwidth of good match chip of laser.Another PBS wavelength multiplexing device is then
It needs orthogonal two kinds of polarization converteds into a kind of polarization state, there are the multiplex loss of 3dB in optical path.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, for current high-speed communication system,
The wavelength interval for needing to be multiplexed is shorter and shorter, and the distance for needing to transmit is also increasingly longer, provides a kind of optics of wavelength multiplexing
Assembly apparatus reduces the band merit requirement to TFF membrane piece, while having filter with low insertion loss.
The technical scheme adopted by the invention is that:
A kind of wavelength multiplexing optics device, including TFF device and polarization beam splitter prism device, the TFF device is by four tunnels
Optical wavelength is multiplexed into the optical wavelength that two-way is multiplexed two-by-two in a manner of non-adjacent light wave appearance multiplexing two-by-two and respectively enterd described
Polarization beam splitter prism device；The polarization beam splitter prism device by this two-way two-by-two multiplexed optical wavelengths with orthogonal polarization side
Formula is complex as all the way.
The TFF device includes four tunnel band logical diaphragms and two high reflection diaphragms, the passband of each band logical diaphragm and
Rejection zone wants incident and reflection wavelength corresponding with it respectively, and band logical diaphragm and high reflection diaphragm realize the non-adjacent light wave of two-way
Long multiplexing.
The TFF device uses TFF glass block assembly.
Polarization beam splitter prism device includes 1/2 slide, 45 ° of bevel edge prisms, rhombic prisms；45 ° of bevel edge prisms, rhombic prisms
Between be provided with polarizing beam splitting film, all the way two-by-two multiplexed optical wavelengths incidence enter rhombic prism be transferred to polarizing beam splitting film progress
Reflection；Multiplexed optical wavelengths impinge perpendicularly on and incident after 1/2 slide enter 45 ° of bevel edge prisms and be transferred to polarization beam splitting another way two-by-two
Film is transmitted；Multiplexed optical wavelengths realize combining to above-mentioned two-way on polarizing beam splitting film two-by-two.
Polarizing beam splitting film is set between 45 ° of bevel edge prisms, rhombic prism, the transmission position of the polarizing beam splitting film, anti-
Position is penetrated to coincide.
The inclined-plane on the 45 ° of inclined-planes and 45 ° of bevel edge prisms of the rhombic prism is oppositely arranged, and the polarizing beam splitting film is set to
45 ° of inclined-planes of rhombic prism or the polarizing beam splitting film are set on the inclined-plane of 45 ° of bevel edge prisms.
1/2 slide is glued on the vertical incidence face of 45 ° of bevel edge prisms or rhombic prism.
The band logical diaphragm and high reflection diaphragm are adhered on glass supporter.
The band logical diaphragm and the direct plated film of thin film are on glass supporter.
The glass supporter is to be set as hollow.
Apparatus of the present invention have the advantages that
1, in optical assembly device of the present invention, TFF block is to be answered non-adjacent wavelength X 1 and λ 3, λ 2 and λ 4
With can relax 1 times relative to traditional TFF block to the intermediate zone band merit of band logical diaphragm, reduce band logical diaphragm
Manufacture difficulty and cost；
2, in optical assembly device of the present invention, four road wavelength are divided into that two two-way are independent to be multiplexed by TFF block,
The order of reflection in multiplexing is reduced, there is relatively low Insertion Loss.
Detailed description of the invention
Fig. 1 is the light path schematic diagram of optical assembly device embodiment 1 of the present invention；
Fig. 2 is the light path schematic diagram of optical assembly device embodiment 2 of the present invention；
Fig. 3 is the light path schematic diagram of optical assembly device embodiment 3 of the present invention；
Wherein:
1:TFF device；2: polarization beam splitter prism device；
3: glass supporter；4: band logical diaphragm group；
5: thin film；6:1/2 slide；
7:45 ° of bevel edge prism；8: rhombic prism；
9: polarizing beam splitting film (PBS Film)；
Specific embodiment
The wavelength that TFF glass blocks (block) and PBS are combined is based on to one kind of the invention below with reference to embodiment and attached drawing
Multiplexer and its method are described in detail.
A kind of optical assembly device for wavelength multiplexing includes 2 liang of big portions of TFF device 1 and polarization beam splitter prism device
Point.TFF device 1 includes band logical diaphragm group 4, glass supporter 3, thin film 5.Band logical diaphragm group 4 is by four independent band logical films
Piece is constituted, the passband and rejection zone of each band logical diaphragm want incident and reflection wavelength corresponding with it.Polarization beam splitter prism
Device 2 includes 1/2 slide, 6,45 ° of bevel edge prisms 7, rhombic prism 8 and polarizing beam splitting film (PBS Film) 9.The rhombic prism 8
The inclined-plane on 45 ° of inclined-planes and 45 ° of bevel edge prisms 7 be oppositely arranged, the polarizing beam splitting film 9 is set to 45 ° of rhombic prism 8 tiltedly
Face or the polarizing beam splitting film 9 are set on the inclined-plane of 45 ° of bevel edge prisms 7.TFF device 1 of the present invention uses TFF glass branch
Rack device.
The independent band logical diaphragm of four of band logical diaphragm group 4 is set to the side of glass supporter 3, respectively with four tunnel optical wavelength
Input position four input optical channels of corresponding composition, the band logical diaphragm makes the optical wavelength in the passband be transmitted, locate
It is reflected in the optical wavelength outside passband, four tunnel optical wavelength pass through four independent band logical diaphragm transmissions of band logical diaphragm group 4 respectively
Into glass supporter 3；Two panels thin film 5 is set to the other side of glass supporter 3, respectively with the two-way light in four tunnel optical wavelength
Exit positions of the wavelength on glass supporter 3 are corresponding, and the optical wavelength being emitted from glass supporter 3 is reflected back into glass supporter 3
In.
Specifically, two panels thin film 5 is respectively arranged on the first optical channel and third optical channel, will be led to from the first light
The optical wavelength that road is propagated is reflected back in glass supporter 3 and is reflected at band logical diaphragm position corresponding with the second optical channel, so that
The optical wavelength that first optical channel is propagated is reflected at the second optical channel corresponding band logical diaphragm position, so that the first light is logical
The lightwave circuit that the lightwave circuit road that road is propagated is propagated with the second optical channel coincides；The optical wavelength that will be propagated from third optical channel
Be reflected back in glass supporter 3 and be reflected into at the 4th optical channel corresponding band logical diaphragm position so that third optical channel propagate
Optical wavelength reflected at the 4th optical channel corresponding band logical diaphragm position so that third optical channel propagate light wave light
The lightwave circuit that tetra- optical channel of Lu Yu is propagated coincides.
There are two 45 ° of parallel inclined-planes, 45 ° of inclined-planes on one of them 45 ° of inclined-plane and 45 ° of bevel edge prisms 7 for the tool of rhombic prism 8
It coincides, another 45 ° of inclined-planes are preferably provided with high anti-reflectance coating, and the oblique of above-mentioned coincidence is arranged in polarizing beam splitting film (PBS Film) 9
Between 45 ° of inclined-planes of square glass prism 8 and 45 ° of inclined-planes of 45 ° of bevel edge prisms 7.1/2 slide is set to vertically entering for 45 ° of bevel edge prisms 7
It penetrates on face or on the vertical incidence face of rhombic prism 8.First and second optical channel optical wavelength of multiplexing and third and fourth light of multiplexing
Channel optical wavelength is incident from the vertical incidence face of 45 ° of bevel edge prisms 7 and the vertical incidence face of rhombic prism 8 respectively, from 45 ° of bevel edges
The optical wavelength of the vertical incidence face incidence of prism 7 is transmitted into rhombic prism 8 from polarizing beam splitting film (PBS Film) 9, from rectangle
The optical wavelength of the vertical incidence face incidence of prism 8 be reflected back toward rhombic prism 8 at 45 ° of inclined-planes of rhombic prism 8 after again by
Polarizing beam splitting film (PBS Film) 9 reflects, and after reflecting be transmitted through the light wave appearance of polarizing beam splitting film (PBS Film) 9
It is overlapped.
When combining the multiplexing to realize 4 road wavelength based on TFF block and PBS, TFF block need to only complete two independences
Two-way wavelength multiplexing, especially meaningful to be, non-adjacent wavelength X 1 and λ 3 are multiplexed into 1 λ all the way by TFF block device
λ 2 and λ 4 are multiplexed into 2 λ 4 of λ all the way by λ 3, and above-mentioned 1 λ 3 of λ and 2 λ 4 of λ are multiplexed into 1 λ of λ, 2 λ 3 all the way again by polarization beam splitter prism device 2
λ4.Because the transfer zone bandwidth of band logical diaphragm is also more and more limited as adjacent wavelength interval is shorter and shorter, then cause it logical
Band bandwidth is also limited.And the wavelength of chip of laser has certain distribution, when pass band width is limited to a certain extent, considers to swash
The bandwidth surplus of band logical diaphragm after light device chip wave spread is smaller and smaller or even is negative, cause larger coupling loss and
Influence extinction ratio when modulation work.To solve this problem, it needs to spend and biggish meets index request at original production
Band logical diaphragm group 4.And the optical assembly device and its method of wavelength multiplexing of the invention are used, TFF block device 1 first will be non-
Adjacent wavelength X 1 and λ 3, λ 2 and λ 4 are multiplexed, to the intermediate zone band merit of band logical diaphragm relative to traditional TFF
Block can relax 1 times, reduce the manufacture difficulty and cost of band logical diaphragm.Four road wavelength are divided into two by TFF block simultaneously
A two-way is independent to be multiplexed, and the order of reflection in multiplexing is reduced, and has relatively low optical path Insertion Loss.
As shown in Figure 1, wavelength X 1, λ 2, λ 3, λ 4 are usually the directional light after collimation, with the sequence of λ 1, λ 3, λ 2, λ 4
The first, second, third, fourth optical channel into TFF device 1 is incident on the corresponding band logical diaphragm of its wavelength at an angle
After band logical diaphragm in group 4, be transmitted into transmission in glass supporter 3, be reflected back toward at thin film 5 in glass supporter 3 after
It resumes defeated, is then reflected back toward in glass supporter 3 at the corresponding band logical diaphragm of non-adjacent channel λ 3 and continues to transmit, finally existed
The correspondence output window of TFF block device 1 exports glass supporter 3.
Wavelength X 3 is after the band logical diaphragm that is incident in its corresponding band logical diaphragm group 4 with the identical incident angle of wavelength X 1
It is transmitted into transmission in glass supporter 3, exports glass supporter 3 in the correspondence output window of TFF block device 1.3 folding of wavelength X
It injects position into glass supporter 3 and wavelength X 1 to coincide in the corresponding band logical diaphragm reflection position in 3 channel λ, to complete wavelength X
1 and wavelength X 3 two-way light multiplexing at 1 λ 3 of light λ all the way.
Based on the same principle of 3 wavelength multiplexing of non-adjacent channel λ 1 and λ, the wavelength for completing non-adjacent channel λ 2 and λ 4 is multiple
With.Wavelength channel is respectively 2 λ 4 of λ 1 λ 3 and λ after being multiplexed two-by-two.
1 λ of λ, 3 vertical incidence enters rhombic prism 8, and optical path direction changes after the total reflection of 45 ° of inclined-planes of rhombic prism 8
90 ° of fold-back rhombic prisms 8 transmit, the optical path side after reflection is completed on another 45 ° of inclined-planes by polarizing beam splitting film (PBS Film) 9
It is transmitted to -90 ° of fold-back rhombic prisms 8 are changed, finally completes output in the output window of polarization beam splitter prism device 2.
2 λ 4 of λ impinges perpendicularly on 90 ° of rotations of completion polarization state after 1/2 slide 6, and vertical incidence enters 45 ° of bevel edge prisms 7,
Enter rhombic prism 8 after transmission is completed on the inclined-plane of 45 ° of bevel edge prisms 7 by polarizing beam splitting film (PBS Film) 9 to transmit, finally
Output is completed in the output window of polarization beam splitter prism device 2.
Above-mentioned 2 λ 4 of λ is in the transmission position of polarizing beam splitting film (PBS Film) 9 and 1 λ 3 of λ at polarizing beam splitting film (PBS Film)
9 reflection position coincides, to complete 2 λ 4 of two-way light λ 1 λ 3 and λ synthesis, 1 λ of light λ, 2 λ, 3 λ 4 all the way.
Second embodiment of the invention, the part that the glass supporter 3 in above-mentioned TFF block device walks optical path can be digging
It is empty, as shown in Fig. 2, i.e. glass supporter 3 can be it is hollow.
Third embodiment of the invention, band logical diaphragm 4 and thin film 5 in above-mentioned TFF block device can be directly
Plated film is connect on glass supporter 3, as shown in Figure 3.
1/2 above-mentioned slide 6 can be placed in the optical path of λ 1, λ 3, the vertical incidence of corresponding 1/2 slide 6 and rhombic prism 8
Face carries out glued.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of wavelength multiplexing optics device, it is characterised in that: including TFF device (1) and polarization beam splitter prism device (2), institute
It states TFF device (1) and four tunnel optical wavelength is multiplexed into the light that two-way is multiplexed two-by-two in a manner of non-adjacent light wave appearance multiplexing two-by-two
Wavelength simultaneously respectively enters the polarization beam splitter prism device (2)；This two-way is multiplexed by the polarization beam splitter prism device (2) two-by-two
Optical wavelength is complex as all the way with orthogonal polarization mode, and the TFF device (1) includes four tunnel band logical diaphragms (4) and two
A high reflection diaphragm (5), the passband and rejection zone of each band logical diaphragm (4) want incident and reflection wavelength opposite with it respectively
It answers, the multiplexing of band logical diaphragm (4) and high reflection diaphragm (5) the realization non-adjacent optical wavelength of two-way.
2. a kind of wavelength multiplexing optics device according to claim 1, it is characterised in that: the TFF device (1) includes band logical
Diaphragm group (4), glass supporter (3), thin film (5).
3. a kind of wavelength multiplexing optics device according to claim 1, it is characterised in that: polarization beam splitter prism device (2) packet
Include 1/2 slide (6), 45 ° of bevel edge prisms (7), rhombic prism (8)；45 ° of bevel edge prisms (7), rhombic prism are provided between (8)
Polarizing beam splitting film (9), multiplexed optical wavelengths incidence enters rhombic prism (8) and is transferred to polarizing beam splitting film (9) progress two-by-two all the way
Reflection；Multiplexed optical wavelengths impinge perpendicularly on that 1/2 slide (6) is incident afterwards to be entered 45 ° of bevel edge prisms (7) and be transferred to partially to another way two-by-two
Vibration beam splitting coating (9) is transmitted；Multiplexed optical wavelengths realize combining to above-mentioned two-way on polarizing beam splitting film (9) two-by-two.
4. a kind of wavelength multiplexing optics device according to claim 3, it is characterised in that: polarizing beam splitting film (9) is set to 45 °
Between bevel edge prism (7), rhombic prism (8), the transmission position of the polarizing beam splitting film (9), reflection position coincide.
5. a kind of wavelength multiplexing optics device according to claim 3, it is characterised in that: 45 ° of the rhombic prism (8)
Inclined-plane and the inclined-plane of 45 ° of bevel edge prisms (7) are oppositely arranged, and the polarizing beam splitting film (9) is set to 45 ° of rhombic prism (8) tiltedly
Face or the polarizing beam splitting film (9) are set on the inclined-plane of 45 ° of bevel edge prisms (7).
6. a kind of wavelength multiplexing optics device according to claim 3, it is characterised in that: 1/2 slide (6) is glued at
On the vertical incidence face of 45 ° of bevel edge prisms (7) or rhombic prism (8).
7. a kind of wavelength multiplexing optics device according to claim 2, it is characterised in that: the band logical diaphragm (4) and height
Reflection diaphragm (5) is adhered on glass supporter (3).
8. a kind of wavelength multiplexing optics device according to claim 2, it is characterised in that: the band logical diaphragm (4) and height
Anti- diaphragm (5) directly plated film is on glass supporter (3).
9. a kind of wavelength multiplexing optics device according to claim 2, it is characterised in that: the glass supporter (3) is to set
It is set to hollow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437422.4A CN105891959B (en) | 2016-06-17 | 2016-06-17 | A kind of wavelength multiplexing optics device |
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|---|---|---|---|
| CN201610437422.4A CN105891959B (en) | 2016-06-17 | 2016-06-17 | A kind of wavelength multiplexing optics device |
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| CN105891959A CN105891959A (en) | 2016-08-24 |
| CN105891959B true CN105891959B (en) | 2019-07-09 |
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| CN106772816A (en) * | 2017-03-01 | 2017-05-31 | 武汉光迅科技股份有限公司 | A kind of structure and implementation method of two-forty planar optical waveguide |
| TWI637203B (en) * | 2017-06-16 | 2018-10-01 | 合鈞科技股份有限公司 | Optical module |
| CN109839700A (en) * | 2017-11-29 | 2019-06-04 | 中兴通讯股份有限公司 | Optical transceiving device |
| CN108051892B (en) * | 2018-01-19 | 2024-07-09 | 广东瑞谷光网通信股份有限公司 | Microstructure optical wavelength division multiplexer |
| CN108551372B (en) * | 2018-03-23 | 2021-03-26 | 成都聚芯光科通信设备有限责任公司 | Multi-wavelength space dislocation divides and closes ripples module |
| CN113376846A (en) * | 2021-06-16 | 2021-09-10 | 成都光创联科技有限公司 | Divergent light high-concentration light combination optical system and light combination method |
| CN115657075B (en) * | 2022-05-25 | 2023-07-14 | 北京一径科技有限公司 | Beam combining device and method for manufacturing the same |
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| CN105891959A (en) | 2016-08-24 |
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