CN203012189U - Same-wavelength coaxial single-fiber bidirectional device - Google Patents
Same-wavelength coaxial single-fiber bidirectional device Download PDFInfo
- Publication number
- CN203012189U CN203012189U CN 201220678300 CN201220678300U CN203012189U CN 203012189 U CN203012189 U CN 203012189U CN 201220678300 CN201220678300 CN 201220678300 CN 201220678300 U CN201220678300 U CN 201220678300U CN 203012189 U CN203012189 U CN 203012189U
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- wavelength
- splitting
- pedestal
- coaxial single
- fiber bidirectional
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Abstract
The utility model relates to the optical device field and especially relates to a same-wavelength coaxial single-fiber bidirectional device, which comprises a base. A splitting system is arranged inside the base. The splitting system can effectively alleviate mutual interference generated when optical waves with the same wavelength are transmitted and received. The device adopting the above-mentioned structure has the characteristics of simple structure, convenient assembly, and high reliability. Meanwhile, the device alleviates the mutual interference of emitted light and received light.
Description
Technical field
The utility model relates to the optical device field, refers in particular to a kind of co-wavelength coaxial single fiber bidirectional device.
Background technology
In recent years, domestic optical communication industry developed rapidly, and market constantly increases the demand of optical module and optical device, to the also increasing day by day of demand of CWDM device.(optical device mainly is divided into: ROSA, TOSA, BOSA etc.)
What traditional B OSA adopted basically is the dual wavelength transmission mode, and receive direction has the light wave that optical filter is isolated other wavelength.The reflected light of radiating portion, can be isolated out by optical filter like this, and therefore not having light enters receiving end, also can not produce interference.The BOSA of traditional double wavelength does not need to consider to launch the interference with receiving end in design, need not to design light-dividing device.And single wavelength CWDM device owing to adopting single wavelength transmission mode, namely receives and launches the light wave that adopts identical wavelength.This kind mode need to not placed optical filter at receiving end, and receiving end can receive the light wave of any wavelength.This has just brought the hidden danger of disturbing, and the light wave of transmitting terminal is transferred to receiving end by the refraction of optical filter and the reflection of base internal wall, thereby has disturbed the reception of external optical signal.Simultaneously, external optical signal after the refraction of 45 ° of optical filters, reflects by inwall and enters receiving end, also can bring interference.In reality test, if adopt traditional base construction, light serious interference, the index of crosstalking be difficult to reach-minimum requirements of 26dB, index also can only reach-20dB preferably.Therefore, adopting light splitting or absorption plant to avoid the impact of transmitting terminal, will be the desirable approach that reaches performance requirement.
Therefore, the inventor makes further research this, develops a kind of co-wavelength coaxial single fiber bidirectional device, and this case produces thus.
The utility model content
The purpose of this utility model is to provide a kind of co-wavelength coaxial single fiber bidirectional device, and is simple in structure, easy to assembly, reduced utilizing emitted light and received light mutual interference mutually, and reliability is high.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of co-wavelength coaxial single fiber bidirectional device comprises pedestal, is provided with beam splitting system in described pedestal, and beam splitting system can effectively reduce the phase mutual interference that identical wavelength light wave produces when transmitting and receiving.
Further, described beam splitting system comprises the triangle beam-splitting structure, square boss, and light splitting piece, square boss is connected with the triangle beam-splitting structure, and light splitting piece is 45 ° of diagonal angle settings in pedestal.
Further, described beam splitting system also comprises optical absorption film, and optical absorption film is arranged on square boss, and contacts with triangle end points in the triangle beam-splitting structure.
Further, described bilateral device also comprises semiconductor laser, photodetector, fiber adapter, described semiconductor laser, photodetector, fiber adapter all are arranged on alone on the surface of pedestal, and semiconductor laser and fiber adapter are located along the same line.
After adopting such scheme, the utility model compared with prior art has the following advantages:
Simple in structure, easy to assembly, reduced utilizing emitted light and received light mutual interference mutually, reliability is high.And when beam splitting system is used, can without optical absorption film, reduce cost in the relatively low device of performance requirement.Require relatively high device, using optical absorption film, can realize better performance requirement.
Description of drawings
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 utility model;
Fig. 4 is stereographic map of the present utility model.
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 utility model is further described.
As shown in the figure, a kind of co-wavelength coaxial single fiber bidirectional device that the utility model discloses comprises semiconductor laser 5, photodetector 6, fiber adapter 7, pedestal 8, described semiconductor laser 5, photodetector 6, fiber adapter 7 all are arranged on 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, and light splitting piece 4, square boss 2 is connected with triangle beam-splitting structure 1, and light splitting piece 4 is in the interior 45 ° of diagonal angle settings 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, to be reflexed to pedestal 8 inwalls by delta-shaped region, then realize diffuse reflection through inwall, thereby reduce the probability that refract light arrives receiving end.In the slightly low device of the requirement of crosstalking, can not use optical absorption film 3.
If the device higher to performance requirement increases optical absorption film 3 again, optical absorption film 3 is arranged on square boss 2, and contacts with triangle end points in triangle beam-splitting structure 1, undertaken by high-temp glue bonding, thereby be fixed on pedestal 8, realize 3 fixing.Refraction light wave 9 can be partially absorbed through after optical absorption film 3, sees through the light wave 9 of optical absorption film 3, then is reflected by the Delta Region, has so just weakened interference.
Above-mentioned is only specific embodiment of the utility model, but design concept of the present utility model is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the utility model, all should belong to the behavior of invading the utility model protection domain.
Claims (4)
1. co-wavelength coaxial single fiber bidirectional device, it is characterized in that: comprise pedestal, be provided with beam splitting system in described pedestal, beam splitting system can effectively reduce the phase mutual interference that identical wavelength light wave produces when transmitting and receiving.
2. a kind of co-wavelength coaxial single fiber bidirectional device according to claim 1, it is characterized in that: described beam splitting system comprises triangle beam-splitting structure, square boss, light splitting piece, square boss is connected with the triangle beam-splitting structure, and light splitting piece is 45 ° of diagonal angle settings in pedestal.
3. a kind of co-wavelength coaxial single fiber bidirectional device according to claim 2, it is characterized in that: described beam splitting system also comprises optical absorption film, and optical absorption film is arranged on square boss, and contacts with triangle end points in the triangle beam-splitting structure.
4. a kind of co-wavelength coaxial single fiber bidirectional device according to claim 3, it is characterized in that: described bilateral device also comprises semiconductor laser, photodetector, fiber adapter, described semiconductor laser, photodetector, fiber adapter all are arranged on alone on the surface of pedestal, and semiconductor laser and fiber adapter are located along the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678300 CN203012189U (en) | 2012-12-06 | 2012-12-06 | Same-wavelength coaxial single-fiber bidirectional device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220678300 CN203012189U (en) | 2012-12-06 | 2012-12-06 | Same-wavelength coaxial single-fiber bidirectional device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012189U true CN203012189U (en) | 2013-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220678300 Expired - Fee Related CN203012189U (en) | 2012-12-06 | 2012-12-06 | Same-wavelength coaxial single-fiber bidirectional device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203012189U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967907A (en) * | 2012-12-06 | 2013-03-13 | 绍兴飞泰光电技术有限公司 | Wavelength-consistent coaxial single-fiber two-way device |
| CN106559137A (en) * | 2016-11-25 | 2017-04-05 | 依偎科技（南昌）有限公司 | A kind of communication means and device |
-
2012
- 2012-12-06 CN CN 201220678300 patent/CN203012189U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967907A (en) * | 2012-12-06 | 2013-03-13 | 绍兴飞泰光电技术有限公司 | Wavelength-consistent coaxial single-fiber two-way device |
| CN102967907B (en) * | 2012-12-06 | 2016-01-20 | 马勇强 | A kind of Wavelength-consistencoaxial coaxial single-fiber two-way |
| CN106559137A (en) * | 2016-11-25 | 2017-04-05 | 依偎科技（南昌）有限公司 | A kind of communication means and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20131206 |