CN2842456Y - Single fiber 3-way photoelectric assembly - Google Patents
Single fiber 3-way photoelectric assembly Download PDFInfo
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- CN2842456Y CN2842456Y CN 200520077891 CN200520077891U CN2842456Y CN 2842456 Y CN2842456 Y CN 2842456Y CN 200520077891 CN200520077891 CN 200520077891 CN 200520077891 U CN200520077891 U CN 200520077891U CN 2842456 Y CN2842456 Y CN 2842456Y
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- signal detector
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Abstract
The utility model relates to a single fiber trifarious photoelectric assembly, which is composed of a laser of which the transmission wave band is lambda 1, a simulation cable television signal detector of which the wave band is lambda 2, a digital signal detector of which the detection wave band is lambda 3, a laser coupling lens, a stimulation simulation cable television signal detector coupling lens for a descending stimulation cable television signal, a digital signal detector coupling lens for a one descending digital signal, two pieces of light splitting pieces of 45 DEG, a single-mode optical fiber and a metal casing, wherein light lambda 1 emitted by the laser is coupled in the single-mode optical fiber through the laser coupling lens, the flat end surfaces of simulation cable television signal detector coupling lens and the digital signal detector coupling lens are coated with corresponding light splitting films, and the light splitting films are used for replacing film piece of 0 DEG with high cost. The utility model is used for enhancing isolation degree and reducing interference., the cost is reduced, and the structure is simplified.
Description
[technical field]
The utility model is the active photoelectric device class about a kind of optical fiber communication product, is meant a kind of Fiber to the home single fiber three-way photoelectric subassembly cheaply especially.
[background technology]
Along with people to the speed of information requirement and improving constantly of quantity, it is the fundamental way that satisfies the user side bandwidth demand that optical fiber inserts.The major obstacle of optical fiber access at present is exactly a cost.In order to reduce the cost that the Optical Access Network network is built, widely apply the single fiber bi-directional device in the Optical Access Network.The single fiber three-way device can be launched a upward signal, receives two downgoing signals, provides data, voice, Video service at a high speed for the user simultaneously.Therefore, the single fiber three-way transmission is one of present FTTH technology trends and important directions.
Present single fiber three-way photoelectric subassembly main flow structural representation, in Fig. 4, Fig. 5, by a laser instrument 1,3,2 45 degree of 2, one digital signal sensors of analog catv signal sensor light splitting piece 7,8, a laser instrument coupled lens 4, to digital signal detector coupled lens 6, single-mode fiber 9,0 degree diaphragm 10,12 and metal shell constitute to 5, one descending digital signals of analog catv signal sensor coupled lens for descending analog catv signal.Laser instrument coupled lens 4 uses globe lens, and (globe lens can directly be encapsulated on the shell of laser instrument, also can be dialyte lens), (globe lens can directly be encapsulated on the shell of detector the downlink optical fiber signal by globe lens, also can be dialyte lens) be coupled into analog catv signal sensor 2 and digital signal detector 3, in the coupling optical path of analog catv signal sensor 2 and digital signal detector 3, be inserted with light splitting piece 7,8 and 0 degree diaphragm 10,12, be used to improve isolation, reduce to crosstalk; Among Fig. 5, the laser instrument coupled lens uses aspheric mirror, to improve coupling efficiency, other same Fig. 4.Fig. 4 structure, advantage: laser instrument coupled lens 4 uses globe lens, and cost is relatively low; Shortcoming: coupling efficiency is low, can not meet the need of market or at the edge that satisfies the demands.Fig. 5 structure, advantage: the coupling efficiency height, can meet the need of market; Shortcoming: aspheric surface laser instrument coupled lens 4 costs are higher relatively; Be used to improve isolation, 0 degree diaphragm, 10,12 costs that reduce to crosstalk are higher.
[summary of the invention]
Technical problem to be solved in the utility model is to provide a kind of low-cost single fiber three-dimensional photoelectric subassembly of realizing three kinds of wavelength transmitted in both directions on an optical fiber.
The utility model solves the problems of the technologies described above by the following technical programs: a kind of single fiber three-way photoelectric subassembly, by an emission band is λ 1 laser instrument, the analog catv signal sensor that detecting band is λ 2, the digital signal detector that detecting band is λ 3, a laser instrument coupled lens, a descending analog catv signal is to analog catv signal sensor coupled lens, a descending digital signal is to digital signal detector coupled lens, 2 45 degree light splitting pieces, single-mode fiber and metal shell constitute, the light λ 1 that laser instrument sends is coupled into single-mode fiber by the laser instrument coupled lens, and digital signal detector coupled lens flush end is coated with increases the Signal Spacing degree, reduce the spectro-film of signal cross-talk.
This utility model further is specially:
Analog catv signal sensor coupled lens flush end is coated with increase Signal Spacing degree, reduces the spectro-film of signal cross-talk.
This laser instrument coupled lens is a plano-convex lens, and this analog catv signal sensor coupled lens and this digital signal detector coupled lens all are packaged lens.
This laser instrument coupled lens, this analog catv signal sensor coupled lens and this digital signal detector coupled lens all are packaged lens.
This laser instrument coupled lens, this analog catv signal sensor coupled lens and this digital signal detector coupled lens all are plano-convex lens.
The advantage of the utility model single fiber three-way photoelectric subassembly is: coupled lens uses cheap plano-convex lens or packaged lens; Analog catv signal sensor coupled lens and digital signal detector coupled lens planar end surface are coated with corresponding spectro-film, the 0 degree diaphragm that alternative cost is high, be used to improve isolation, reduce to crosstalk, satisfy in performance index under the prerequisite of market demands, reduced cost, further simplified structure, dependable performance simultaneously.
[description of drawings]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the utility model embodiment 1 principle schematic.
Fig. 2 is the utility model embodiment 2 principle schematic.
Fig. 3 is the utility model embodiment 3 principle schematic.
Fig. 4 is present single fiber three-way photoelectric subassembly main flow structural representation.
Fig. 5 is present another kind of single fiber three-way photoelectric subassembly main flow structural representation.
Among the figure: the 1-laser instrument; 2-analog catv signal sensor; 3-digital signal detector; 4-laser instrument coupled lens; 5-analog catv signal sensor coupled lens; 6-digital signal detector coupled lens; 7-45 degree light splitting piece; 8-45 degree light splitting piece; The 9-single-mode fiber; 10-0 degree diaphragm; 12-0 degree diaphragm.
[embodiment]
The utility model by a laser instrument 1, analog catv signal sensor 2,7,8, laser instrument coupled lens of digital signal sensor 3,2 45 degree light splitting piece 4, descending analog catv signal to analog catv signal sensor coupled lens 5-hemisphere or plano-convex lens, a descending digital signal to digital signal detector coupled lens 6-hemisphere or plano-convex lens, single-mode fiber 9 and metal shell formation.
The light λ 1 that laser instrument 1 sends directly is coupled into single-mode fiber 9 by laser instrument coupled lens 4 through two 45 degree light splitting pieces 7,8; By the descending analog catv signal λ 2 of single-mode fiber 9, after 7 reflections of 45 degree light splitting pieces, be coupled into analog catv signal sensor 2 by analog catv signal sensor coupled lens 5; By the descending digital signal λ 3 of single-mode fiber 9, projection after 8 reflections of 45 degree light splitting pieces, is coupled into digital signal detector 3 by digital signal detector coupled lens 6 by 45 degree light splitting pieces 7.Wherein, laser instrument 1 emission band is λ 1; The wave band that analog catv signal sensor 2 is surveyed is λ 2; The wave band that digital signal detector 3 is surveyed is λ 3.
Analog catv signal sensor coupled lens 5 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 reflection/λ 2 transmissions are with crosstalking of the isolation of the relative λ 1 of raising λ 2 signals, λ 3 signals and reduction λ 1,3 pairs of λ 2 signals of λ; Digital signal detector coupled lens 6 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 transmissions/λ 2 reflections are with crosstalking of the isolation that improves the relative λ 1 of λ 3 signals, λ 2 signals and reduction λ 1,2 pairs of λ 3 signals of λ.
Embodiment 1: as Fig. 1
The light λ 1 that laser instrument 1 sends directly is coupled into single-mode fiber 9 by laser instrument coupled lens 4 through two 45 degree light splitting pieces 7,8; By the descending analog catv signal λ 2 of single-mode fiber 9, after 7 reflections of 45 degree light splitting pieces, be coupled into analog catv signal sensor 2 by analog catv signal sensor coupled lens 5; By the descending digital signal λ 3 of single-mode fiber 9, projection after 8 reflections of 45 degree light splitting pieces, is coupled into digital signal detector 3 by digital signal detector coupled lens 6 by 45 degree light splitting pieces 7.Wherein, this laser instrument coupled lens 4 is a plano-convex lens, and this analog catv signal sensor coupled lens 5 and this digital signal detector coupled lens 6 all are packaged lens, and this laser instrument 1 emission band is λ 1; The wave band that analog catv signal sensor 2 is surveyed is λ 2; The wave band that digital signal detector 3 is surveyed is λ 3.
Analog catv signal sensor coupled lens 5 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 reflection/λ 2 transmissions are with crosstalking of the isolation of the relative λ 1 of raising λ 2 signals, λ 3 signals and reduction λ 1,3 pairs of λ 2 signals of λ; Digital signal detector coupled lens 6 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 transmissions/λ 2 reflections are with crosstalking of the isolation that improves the relative λ 1 of λ 3 signals, λ 2 signals and reduction λ 1,2 pairs of λ 3 signals of λ.
Embodiment 2: as Fig. 2
The light λ 1 that laser instrument 1 sends directly is coupled into single-mode fiber 9 by laser instrument coupled lens 4 through two 45 degree light splitting pieces 7,8; By the descending analog catv signal λ 2 of single-mode fiber 9, after 7 reflections of 45 degree light splitting pieces, be coupled into analog catv signal sensor 2 by analog catv signal sensor coupled lens 5; By the descending digital signal λ 3 of single-mode fiber 9, projection after 8 reflections of 45 degree light splitting pieces, is coupled into digital signal detector 3 by digital signal detector coupled lens 6 by 45 degree light splitting pieces 7.Wherein, this laser instrument coupled lens 4, this analog catv signal sensor coupled lens 5 and this digital signal detector coupled lens 6 all are packaged lens, and laser instrument 1 emission band is λ 1; The wave band that analog catv signal sensor 2 is surveyed is λ 2; The wave band that digital signal detector 3 is surveyed is λ 3.
Analog catv signal sensor coupled lens 5 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 reflection/λ 2 transmissions are with crosstalking of the isolation of the relative λ 1 of raising λ 2 signals, λ 3 signals and reduction λ 1,3 pairs of λ 2 signals of λ; Digital signal detector coupled lens 6 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 transmissions/λ 2 reflections are with crosstalking of the isolation that improves the relative λ 1 of λ 3 signals, λ 2 signals and reduction λ 1,2 pairs of λ 3 signals of λ.
Embodiment 3: as Fig. 3
The light λ 1 that laser instrument 1 sends directly is coupled into single-mode fiber 9 by laser instrument coupled lens 4 through two 45 degree light splitting pieces 7,8; By the descending analog catv signal λ 2 of single-mode fiber 9, after 7 reflections of 45 degree light splitting pieces, be coupled into analog catv signal sensor 2 by analog catv signal sensor coupled lens 5; By the descending digital signal λ 3 of single-mode fiber 9, projection after 8 reflections of 45 degree light splitting pieces, is coupled into digital signal detector 3 by digital signal detector coupled lens 6 by 45 degree light splitting pieces 7.Wherein, this laser instrument coupled lens 4, this analog catv signal sensor coupled lens 5 and this digital signal detector coupled lens 6 all are plano-convex lens, and laser instrument 1 emission band is λ 1; The wave band that analog catv signal sensor 2 is surveyed is λ 2; The wave band that digital signal detector 3 is surveyed is λ 3.
Analog catv signal sensor coupled lens 5 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 reflection/λ 2 transmissions are with crosstalking of the isolation of the relative λ 1 of raising λ 2 signals, λ 3 signals and reduction λ 1,3 pairs of λ 2 signals of λ; Digital signal detector coupled lens 6 planar end surfaces platings spectro-film: λ 1 reflection/λ 3 transmissions/λ 2 reflections are with crosstalking of the isolation that improves the relative λ 1 of λ 3 signals, λ 2 signals and reduction λ 1,2 pairs of λ 3 signals of λ.
The wave band of the laser that above-mentioned laser instrument 1 sends is 1310nm (1260nm～1360nm); Analog catv signal sensor 2 detecting bands are 1550nm (1550nm～1560nm); The wave band that digital signal detector 3 is surveyed is 1490nm (1480nm～1500nm).
In sum, the utility model-single fiber three-way photoelectric subassembly, practical cheap plano-convex/packaged lens is used for the LD coupling, replaces present expensive non-spherical lens; Practical plano-convex lens or packaged lens are used for the detector coupling, and the spectro-film that improve isolation, reduces to crosstalk directly is plated in packaged lens or plano-convex lens flush end, to save two 0 practical usually in present single fiber three-way device degree diaphragms, further reduce cost.The utility model light path is simple, with low cost, suitable to be produced in batches, provides advantage for Fiber to the home.
Claims (5)
1. single fiber three-way photoelectric subassembly, by an emission band is λ 1 laser instrument (1), the analog catv signal sensor (2) that detecting band is λ 2, the digital signal detector (3) that detecting band is λ 3, a laser instrument coupled lens (4), a descending analog catv signal is to analog catv signal sensor coupled lens (5), a descending digital signal is to digital signal detector coupled lens (6), 2 45 degree light splitting pieces (7,8), single-mode fiber (9) and metal shell constitute, the light λ 1 that laser instrument sends is coupled into single-mode fiber by the laser instrument coupled lens, it is characterized in that: digital signal detector coupled lens flush end is coated with increases the Signal Spacing degree, reduce the spectro-film of signal cross-talk.
2. single fiber three-way photoelectric subassembly as claimed in claim 1 is characterized in that: analog catv signal sensor coupled lens flush end is coated with increase Signal Spacing degree, reduces the spectro-film of signal cross-talk.
3. single fiber three-way photoelectric subassembly as claimed in claim 1 or 2 is characterized in that: this laser instrument coupled lens is a plano-convex lens, and this analog catv signal sensor coupled lens and this digital signal detector coupled lens all are packaged lens.
4. single fiber three-way photoelectric subassembly as claimed in claim 1 or 2 is characterized in that: this laser instrument coupled lens, this analog catv signal sensor coupled lens and this digital signal detector coupled lens all are packaged lens.
5. single fiber three-way photoelectric subassembly as claimed in claim 1 or 2 is characterized in that: this laser instrument coupled lens, this analog catv signal sensor coupled lens and this digital signal detector coupled lens all are plano-convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077891 CN2842456Y (en) | 2005-11-16 | 2005-11-16 | Single fiber 3-way photoelectric assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520077891 CN2842456Y (en) | 2005-11-16 | 2005-11-16 | Single fiber 3-way photoelectric assembly |
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| CN2842456Y true CN2842456Y (en) | 2006-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520077891 Expired - Fee Related CN2842456Y (en) | 2005-11-16 | 2005-11-16 | Single fiber 3-way photoelectric assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398517B (en) * | 2008-09-12 | 2012-03-07 | 武汉电信器件有限公司 | Single fiber three-way photoelectric module electric cross talk restraining method and structure thereof |
| CN102714555A (en) * | 2010-09-06 | 2012-10-03 | Hoya美国公司 | Cross-talk reduction in a bidirectional optoelectronic device |
-
2005
- 2005-11-16 CN CN 200520077891 patent/CN2842456Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398517B (en) * | 2008-09-12 | 2012-03-07 | 武汉电信器件有限公司 | Single fiber three-way photoelectric module electric cross talk restraining method and structure thereof |
| CN102714555A (en) * | 2010-09-06 | 2012-10-03 | Hoya美国公司 | Cross-talk reduction in a bidirectional optoelectronic device |
| CN102714555B (en) * | 2010-09-06 | 2016-06-15 | 华为技术有限公司 | Crosstalk in bidirectional optoelectronic device reduces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: OPTIMAL COATCCH (GUANGZHOU) CO., LTD. Assignor: Photop Technologies, Inc. Contract fulfillment period: 2008.5.28 to 2013.5.27 Contract record no.: 2009440000573 Denomination of utility model: Single fiber three way photoelectric assembly Granted publication date: 20061129 License type: Exclusive license Record date: 20090709 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.5.28 TO 2013.5.27; CHANGE OF CONTRACT Name of requester: OPU COATING FILM TECHNOLOGY( GUANGZHOU ) CO., LTD. Effective date: 20090709 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061129 Termination date: 20131116 |