CN102967907B - A kind of Wavelength-consistencoaxial coaxial single-fiber two-way - Google Patents
A kind of Wavelength-consistencoaxial coaxial single-fiber two-way Download PDFInfo
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- CN102967907B CN102967907B CN201210529779.7A CN201210529779A CN102967907B CN 102967907 B CN102967907 B CN 102967907B CN 201210529779 A CN201210529779 A CN 201210529779A CN 102967907 B CN102967907 B CN 102967907B
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Abstract
The present invention relates to fields of light devices, refer in particular to a kind of Wavelength-consistencoaxial coaxial single-fiber two-way, comprise pedestal, be provided with beam splitting system in described pedestal, beam splitting system effectively can reduce the mutual interference that identical wavelength light wave produces when transmitting and receiving.Such scheme structure is simple, easy to assembly, reduces utilizing emitted light and receive light mutually to disturb, and reliability is high.
Description
Technical field
The present invention relates to fields of light devices, refer in particular to a kind of Wavelength-consistencoaxial coaxial single-fiber two-way.
Background technology
In recent years, domestic optical communications industry developed rapidly, and the demand of market to optical module and optical device constantly increases, and also day by day strengthens the demand of CWDM device.(optical device is mainly divided into: ROSA, TOSA, BOSA etc.)
What traditional B OSA adopted substantially is dual wavelength transmission mode, and receive direction has the light wave that optical filter isolates other wavelength.The reflected light of such radiating portion, can be isolated out by optical filter, therefore not have light and enter receiving end, also can not produce interference.The BOSA of traditional double wavelength does not need the interference considering launching and receiving end when design, without the need to designing light-dividing device.And Single wavelength CWDM device, owing to adopting Single wavelength transmission mode, namely receive and launch the light wave adopting phase co-wavelength.This kind of mode, do not need to place optical filter at receiving end, receiving end can receive the light wave of any wavelength.This just brings the hidden danger of interference, and the light wave of transmitting terminal to receiving end, thus disturbs the reception of external optical signal by the refraction of optical filter and the bounce transmission of base internal wall.Meanwhile, external optical signal, after 45 ° of optical filter refractions, enters receiving end by inwall reflection, also can bring interference.In reality test, if adopt conventional base structure, light serious interference, crosstalk index is difficult to the minimum requirements reaching-26dB, and good index also can only reach-20dB.Therefore, adopting light splitting or absorption plant to avoid the impact of transmitting terminal, will be the desirable route reaching performance requirement.
Therefore, the present inventor makes further research this, and develop a kind of Wavelength-consistencoaxial coaxial single-fiber two-way, this case produces thus.
Summary of the invention
The object of the present invention is to provide a kind of Wavelength-consistencoaxial coaxial single-fiber two-way, structure is simple, easy to assembly, reduces utilizing emitted light and receive light mutually to disturb, and reliability is high.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of Wavelength-consistencoaxial coaxial single-fiber two-way, comprises pedestal, is provided with beam splitting system in described pedestal, and beam splitting system effectively can reduce the mutual interference that identical wavelength light wave produces when transmitting and receiving.
Further, described beam splitting system comprises triangle beam-splitting structure, square boss, light splitting piece, and square boss is connected with triangle beam-splitting structure, and light splitting piece 45 ° of diagonal angles in pedestal are arranged.
Further, described beam splitting system also comprises optical absorption film, and optical absorption film is arranged in square boss, and contacts with the triangle end points in triangle beam-splitting structure.
Further, described bilateral device also comprises semiconductor laser, photodetector, fiber adapter, described semiconductor laser, photodetector, fiber adapter are arranged on the surface of pedestal all alone, and semiconductor laser and fiber adapter are located along the same line.
After adopting such scheme, the present invention compared with prior art, has the following advantages:
Structure is simple, easy to assembly, reduces utilizing emitted light and receive light mutually to disturb, and reliability is high.And beam splitting system when using in the device that performance requirement is relatively low, without optical absorption film, cost can be reduced.Requiring relatively high device, using optical absorption film, better performance requirement can be realized.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that beam splitting system does not have optical absorption film;
Fig. 2 is the schematic diagram that beam splitting system has optical absorption film;
Fig. 3 is cut-open view of the present invention;
Fig. 4 is stereographic map of the present invention.
Label declaration
Triangle beam-splitting structure 1, square boss 2, optical absorption film 3, light splitting piece 4, semiconductor laser 5, photodetector 6, fiber adapter 7, pedestal 8, light wave 9.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
As shown in the figure, a kind of Wavelength-consistencoaxial coaxial single-fiber two-way that the present invention discloses comprises semiconductor laser 5, photodetector 6, fiber adapter 7, pedestal 8, described semiconductor laser 5, photodetector 6, fiber adapter 7 are arranged on all alone on the surface of pedestal 8, and semiconductor laser 5 and fiber adapter 7 are located along the same line.
Be provided with beam splitting system in pedestal 8, beam splitting system comprises triangle beam-splitting structure 1, square boss 2, light splitting piece 4, and square boss 2 is connected with triangle beam-splitting structure 1, and light splitting piece 4 is arranged at the interior 45 ° of diagonal angles of pedestal 8.
Triangle beam-splitting structure 1 is corresponding with the refract light of receive direction, after light wave 9 is refracted to delta-shaped region by 45 ° of light splitting pieces 4, pedestal 8 inwall will be reflexed to by delta-shaped region, then realize diffuse reflection through inwall, thus reduce the probability that refract light arrives receiving end.In the device that crosstalk requirements is slightly low, optical absorption film 3 can not be used.
If the device higher to performance requirement, then increase optical absorption film 3 again, optical absorption film 3 is arranged in square boss 2, and contacts with the triangle end points in triangle beam-splitting structure 1, is undertaken bonding, thus be fixed on pedestal 8 by high-temp glue, realizes at 3 and fixes.Refraction light wave 9, after optical absorption film 3, can be partially absorbed, through the light wave 9 of optical absorption film 3, then be reflected by Delta Region, so just reduce interference.
Above are only specific embodiments of the invention, but design concept of the present invention is not limited thereto, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should belong to the behavior of invading scope.
Claims (2)
1. a Wavelength-consistencoaxial coaxial single-fiber two-way, is characterized in that: comprise pedestal, is provided with beam splitting system in described pedestal, and beam splitting system effectively can reduce the mutual interference that identical wavelength light wave produces when transmitting and receiving; Described beam splitting system comprises triangle beam-splitting structure, square boss, light splitting piece, square boss is connected with triangle beam-splitting structure, light splitting piece 45 ° of diagonal angles in pedestal are arranged, and triangle beam-splitting structure is corresponding with the refract light of receive direction, after light wave is refracted to delta-shaped region by 45 ° of light splitting pieces, base internal wall will be reflexed to by delta-shaped region, then realize diffuse reflection through inwall; Described beam splitting system also comprises optical absorption film, and optical absorption film is arranged in square boss, and contacts with the triangle end points in triangle beam-splitting structure, is undertaken bonding, thus be fixed on pedestal by high-temp glue, realizes at 3 and fixes.
2. a kind of Wavelength-consistencoaxial coaxial single-fiber two-way according to claim 1, it is characterized in that: described bilateral device also comprises semiconductor laser, photodetector, fiber adapter, described semiconductor laser, photodetector, fiber adapter are arranged on the surface of pedestal all alone, and semiconductor laser and fiber adapter are located along the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529779.7A CN102967907B (en) | 2012-12-06 | 2012-12-06 | A kind of Wavelength-consistencoaxial coaxial single-fiber two-way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529779.7A CN102967907B (en) | 2012-12-06 | 2012-12-06 | A kind of Wavelength-consistencoaxial coaxial single-fiber two-way |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102967907A CN102967907A (en) | 2013-03-13 |
| CN102967907B true CN102967907B (en) | 2016-01-20 |
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| CN201210529779.7A Expired - Fee Related CN102967907B (en) | 2012-12-06 | 2012-12-06 | A kind of Wavelength-consistencoaxial coaxial single-fiber two-way |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018855A (en) * | 2012-12-21 | 2013-04-03 | 深圳市易飞扬通信技术有限公司 | Bidirectional optical subassembly |
| CN104363052A (en) * | 2014-11-21 | 2015-02-18 | 索尔思光电（成都）有限公司 | Method for decreasing crosstalk of optical signals in optical cavity and optical module using method |
| CN110244414A (en) * | 2019-06-11 | 2019-09-17 | 青岛海信宽带多媒体技术有限公司 | A kind of optical module |
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| CN102967907A (en) | 2013-03-13 |
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Inventor after: Ma Yongqiang Inventor before: Wen Junhua Inventor before: Yang Sheng Inventor before: Wang Miaoqing Inventor before: Wang Longgun |
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Effective date of registration: 20151127 Address after: 312000 Zhejiang province Shaoxing Yindu garden building 19, Room 201 Applicant after: Ma Yongqiang Address before: 312000 Sanjiang road Zhejiang Shaoxing Paojiang Industrial Zone Applicant before: Shaoxing Fiberteck Photoelectric Technology Co., Ltd. |
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