CN104062722A - Low-crosstalk same wavelength division multiplexing light receiving-transmitting integrated single-fiber bidirectional device - Google Patents
Low-crosstalk same wavelength division multiplexing light receiving-transmitting integrated single-fiber bidirectional device Download PDFInfo
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- CN104062722A CN104062722A CN201410235259.4A CN201410235259A CN104062722A CN 104062722 A CN104062722 A CN 104062722A CN 201410235259 A CN201410235259 A CN 201410235259A CN 104062722 A CN104062722 A CN 104062722A
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Abstract
The invention belongs to the technical field of laser communication, and relates to a low-crosstalk same wavelength division multiplexing light receiving-transmitting integrated single-fiber bidirectional device. The device is characterized in that a detector and a light splitting plate are both mounted on a light splitting plate seat; the middle section of the light splitting plate seat is a tubular light path channel in a main light path hole; the detector and the light splitting plate are respectively mounted at two ends of the tubular light path channel. According to the device, an annular shield is formed about a light path of the detector through the tubular light path channel on a light splitter seat, which can shield parasitic light emitted by an emitting laser, and the crosstalk can be greatly reduced; the detector and the light splitting plate can be assembled in an open position, which greatly lowers down the complexity of the assembling process.
Description
Technical field
The invention belongs to laser communication technology field, relate to a kind of low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking.
Background technology
At present, the wavelength-division multiplex single fiber bi-directional communication technology has obtained application very widely at optical communication field, the light transmit-receive integrated single-fiber bidirectional device of core component wavelength-division multiplex as the optical communication of wavelength-division multiplex single fiber bi-directional also has diversified design proposal, and what wherein transmitting was identical with reception wavelength is called co-wavelength BOSA.There is the large shortcoming of crosstalking in this class device, parasitic light, the transmitting terminal light of transmitting terminal can enter detector through fiber end face pottery end face reflection, form crosstalk interference detector and normally work.Although prior art has and plates anti-reflection film by fiber end face and solve fiber end face transmitting problem, reduces part reflection by ceramic insertion core chamfering.But the problem that is difficult to solve transmitting terminal parasitic light and enters detector, also cannot solve more up hill and dale ceramic end face reflected light enter detector problem this, thereby limited the further raising of device performance.
Summary of the invention
Technical matters to be solved by this invention, provides a kind of and can reduce internal crosstalk, working stability, the low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking that precision is high.
The low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking of the present invention includes a threeway metal pedestal, in threeway metal pedestal, be provided with the main optical path hole of longitudinal perforation and the detector hole with main optical path hole vertical connection, the rear and front end in described main optical path hole is separately installed with laser instrument and tail optical fiber, in light path between laser instrument and tail optical fiber, be mounted with light splitting piece, the outboard end of described detector hole is provided with detector; Described detector and light splitting piece are installed on a light splitting bar, and light splitting bar stage casing is one section of tubular light paths that is positioned at main optical path hole, and described detector and light splitting piece are arranged on respectively the two ends of tubular light paths.
Described tail optical fiber includes coaxial ceramic insertion core and fiber core, and described fiber core front end stretches out the front end face of ceramic insertion core.
On the front end face of described ceramic insertion core, scribble the black glue-line for extinction.
On the main optical path hole inwall of described detector hole offside, extinction lid is installed, the inner side of extinction lid scribbles the black glue-line for extinction.
The inner side of described extinction lid is stepped appearance.
Tubular light paths on light splitting bar, makes the light path of detector around form annular and blocks, and can live the parasitic light that emitting laser sends by shelves.
Beneficial effect of the present invention is embodied in: 1, by the tubular light paths on optical splitter seat, make the light path of detector form annular around and block, can live the parasitic light that emitting laser sends by shelves, can significantly reduce and crosstalk; 2, tail optical fiber adopts particular design, and fiber core stretches out ceramic insertion core, coordinates the black glue-line being coated on ceramic insertion core front end face, can significantly reduce the reflected light of ceramic plane, has reduced and has crosstalked; 3, can further reduce by extinction lid the parasitic light that enters detector, also reduce and crosstalked; 4, detector and light splitting piece are arranged on the light splitting bar that can extract threeway metal pedestal out, detector and light splitting piece all can be assembled release position, significantly reduced packaging technology complexity.
Brief description of the drawings
Fig. 1 is vertical section structure schematic diagram of the present invention;
Fig. 2 is the local structure for amplifying schematic diagram of the A of Fig. 1.
Embodiment
As shown in Figure 1, this low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking includes a threeway metal pedestal 1, in threeway metal pedestal, be provided with the main optical path hole 2 of longitudinal perforation and the detector hole 3 with main optical path hole vertical connection, the rear and front end in described main optical path hole is separately installed with laser instrument 4 and tail optical fiber 5, in light path between laser instrument 4 and tail optical fiber 5, be mounted with light splitting piece 6, the outboard end of described detector hole 3 is provided with detector 7; Described detector 7 and light splitting piece 6 are installed on a light splitting bar 8, and described light splitting bar 8 stage casings are one section of tubular light paths 9 that is positioned at main optical path hole, and described detector 7 and light splitting piece 6 are arranged on respectively the two ends of tubular light paths.Described tail optical fiber 5 includes coaxial ceramic insertion core 10 and fiber core 11, and described fiber core 11 front ends stretch out the front end face (as Fig. 2) of ceramic insertion core 10.On the front end face of ceramic insertion core 10, scribble the black glue-line for extinction.On the main optical path hole inwall of detector hole 3 offsides, extinction lid 12 is installed, the inner side of extinction lid scribbles the black glue-line for extinction.The inner side of extinction lid 12 is stepped appearance.
Claims (6)
1. the one kind low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking, include a threeway metal pedestal (1), in threeway metal pedestal, be provided with the main optical path hole (2) of longitudinal perforation and the detector hole (3) with main optical path hole vertical connection, the rear and front end in described main optical path hole is separately installed with laser instrument (4) and tail optical fiber (5), in light path between laser instrument (4) and tail optical fiber (5), be mounted with light splitting piece (6), the outboard end of described detector hole (3) is provided with detector (7); It is characterized in that: described detector (7) and light splitting piece (6) are installed on a light splitting bar (8), described light splitting bar 8 stage casings are one section of tubular light paths 9 that is positioned at main optical path hole, and described detector (7) and light splitting piece (6) are arranged on respectively the two ends of tubular light paths.
2. the low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking according to claim 1, it is characterized in that: described tail optical fiber (5) includes coaxial ceramic insertion core (10) and fiber core (11), described fiber core (11) front end stretches out the front end face of ceramic insertion core (10).
3. the low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking according to claim 2, is characterized in that: on the front end face of ceramic insertion core (10), scribble the black glue-line for extinction.
4. the low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking according to claim 1, it is characterized in that: on the main optical path hole inwall of detector hole (3) offside, extinction lid (12) is installed, the inner side of extinction lid scribbles the black glue-line for extinction.
5. the low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking according to claim 4, is characterized in that: the inner side of extinction lid (12) is stepped appearance.
6. the low light transmit-receive integrated single-fiber bidirectional device of co-wavelength wavelength-division multiplex of crosstalking according to claim 3, it is characterized in that: the tubular light paths on light splitting bar (8), make the light path of detector around form annular and block, can live the parasitic light that emitting laser sends by shelves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235259.4A CN104062722A (en) | 2014-05-30 | 2014-05-30 | Low-crosstalk same wavelength division multiplexing light receiving-transmitting integrated single-fiber bidirectional device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410235259.4A CN104062722A (en) | 2014-05-30 | 2014-05-30 | Low-crosstalk same wavelength division multiplexing light receiving-transmitting integrated single-fiber bidirectional device |
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| Publication Number | Publication Date |
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| CN104062722A true CN104062722A (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410235259.4A Pending CN104062722A (en) | 2014-05-30 | 2014-05-30 | Low-crosstalk same wavelength division multiplexing light receiving-transmitting integrated single-fiber bidirectional device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433628A (en) * | 2021-06-23 | 2021-09-24 | 河南鑫宇光科技股份有限公司 | Low-crosstalk single-wavelength optical device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904043A (en) * | 1988-06-15 | 1990-02-27 | American Telephone And Telegraph Company, At&T Bell Laboratories | Optical data link dual wavelength coupler |
| JPH08234061A (en) * | 1995-02-24 | 1996-09-13 | Kyocera Corp | Module for optical communication |
| CN1641393A (en) * | 2004-01-15 | 2005-07-20 | Tdk株式会社 | Optical module |
| CN2766254Y (en) * | 2005-01-14 | 2006-03-22 | 武汉光迅科技有限责任公司 | Novel single-fiber bidirectional device |
| CN2876807Y (en) * | 2006-04-07 | 2007-03-07 | 深圳飞通光电子技术有限公司 | Single fiber bidirectional three port assembly |
| CN202904074U (en) * | 2012-11-09 | 2013-04-24 | 江苏奥雷光电有限公司 | An interface assembly of an optical transceiver module |
| CN103718077A (en) * | 2013-08-15 | 2014-04-09 | 华为技术有限公司 | Optical component, built-in type optical time-domain reflectometry and optical network equipment |
-
2014
- 2014-05-30 CN CN201410235259.4A patent/CN104062722A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4904043A (en) * | 1988-06-15 | 1990-02-27 | American Telephone And Telegraph Company, At&T Bell Laboratories | Optical data link dual wavelength coupler |
| JPH08234061A (en) * | 1995-02-24 | 1996-09-13 | Kyocera Corp | Module for optical communication |
| CN1641393A (en) * | 2004-01-15 | 2005-07-20 | Tdk株式会社 | Optical module |
| CN2766254Y (en) * | 2005-01-14 | 2006-03-22 | 武汉光迅科技有限责任公司 | Novel single-fiber bidirectional device |
| CN2876807Y (en) * | 2006-04-07 | 2007-03-07 | 深圳飞通光电子技术有限公司 | Single fiber bidirectional three port assembly |
| CN202904074U (en) * | 2012-11-09 | 2013-04-24 | 江苏奥雷光电有限公司 | An interface assembly of an optical transceiver module |
| CN103718077A (en) * | 2013-08-15 | 2014-04-09 | 华为技术有限公司 | Optical component, built-in type optical time-domain reflectometry and optical network equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433628A (en) * | 2021-06-23 | 2021-09-24 | 河南鑫宇光科技股份有限公司 | Low-crosstalk single-wavelength optical device |
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Application publication date: 20140924 |