CN107678095A - The wavelength division multiplexer of highly transmissive isolation - Google Patents
The wavelength division multiplexer of highly transmissive isolation Download PDFInfo
- Publication number
- CN107678095A CN107678095A CN201711204379.8A CN201711204379A CN107678095A CN 107678095 A CN107678095 A CN 107678095A CN 201711204379 A CN201711204379 A CN 201711204379A CN 107678095 A CN107678095 A CN 107678095A
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- CN
- China
- Prior art keywords
- collimater
- diaphragm
- isolation
- wavelength
- division multiplex
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2746—Optical coupling means with polarisation selective and adjusting means comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators
Abstract
The wavelength division multiplexer of highly transmissive isolation, by common port collimater, transmit collimater, reflection end collimater, wavelength-division multiplex diaphragm and isolation improve diaphragm composition, common port collimater, it is single optical fiber calibrator to transmit collimater and reflection end collimater, isolation improves diaphragm arrangement in reflection end collimater front end, isolation improves the splitting ratio T/R of diaphragm and wavelength-division multiplex diaphragm wave-length coverage contrast, the light that common port collimater is sent is after the transmission of wavelength-division multiplex diaphragm, received and exported by transmission collimater, the light of wavelength-division multiplex diaphragm reflection enters reflection end collimater after isolation improves diaphragm.The present invention replaces WDM structure of the existing single fiber collimater with reference to a two line collimaters using three single optical fiber calibrators, avoid and improve diaphragm using the isolation to involve great expense, diaphragm is improved using the wavelength-division multiplex diaphragm and isolation of routine, wavelength division multiplexer reflection isolation degree and transmission isolation can be significantly improved.
Description
Technical field
The present invention relates to fiber optic communication field of sensing technologies, and in particular to a kind of wavelength division multiplexer of highly transmissive isolation.
Background technology
With the application of fiber optic communication, Fibre Optical Sensor in telecommunications, Aero-Space, navigation, industry manufacture field increasingly
Generally, the demand of the various optical devices to optical fiber telecommunications system, optical fiber sensing system is thereby increased.OWDM（Referred to as
WDM）Technology is to transmit into an optical fiber light modulating signal of each road Different lightwave length by optical wavelength multiplexing, also can will be same
The multi-wavelength light modulated signal of simultaneous transmission is decomposed into individual wavelengths and exported respectively in optical fiber, is to improve communication capacity most to have
One of efficacious prescriptions case, therefore be widely used in current optical communication network.But there are a variety of ripples inside an optical fiber
Grow and transmitting, need sufficiently high isolation between each other, otherwise signal can disturb.With fiber-to-the-home development, from
EPON to GPON, then to XGPON, increases the upgrading of unification of three nets again recently, the signal in optical-fiber network, from 1310nm and
1490nm, increase 1270nm and 1577nm, increase 1550nm and 1610nm cable TV network optical signal again.For early stage net
The upgrading of network, with greater need for sufficiently high reflection isolation degree and transmission isolation is considered, network original function otherwise will be caused to fail.
As shown in figure 1, the wavelength division multiplexer of prior art, the luminous power inputted from the common port of double optical fiber is through wavelength-division multiplex
The light that diaphragm 4 transmits is received by single optical fiber calibrator, and this isolation can reach more than 30db, but at the same time anti-by diaphragm
The light of reflection end output of the light penetrated through dual optical fiber splice only has 13-15dB, and it is requirement to be unsatisfactory for isolation, in order to improve
Isolation, current method are：A piece of isolation is inserted between Glens and double optical fiber head and improves diaphragm 5, isolation improves film
Piece 5 requires：Must be very thin, degree of being otherwise isolated from, which improves diaphragm, can not block the light of common port, not only this diaphragm value it is expensive and
And efficiency and yield substantially reduce.
The content of the invention
The invention provides a kind of wavelength division multiplexer of highly transmissive isolation, with solve cost existing for prior art it is high,
The problem of reflection isolation degree and undesirable transmission isolation.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of wavelength division multiplexer of highly transmissive isolation, by common port collimater, transmission collimater, reflection end collimater, wavelength-division
It is multiplexed diaphragm and isolation improves diaphragm composition, common port collimater, transmission collimater and reflection end collimater is that single fiber is accurate
Straight device, isolation improve diaphragm arrangement and improve the light splitting of diaphragm and wavelength-division multiplex diaphragm in reflection end collimater front end, isolation
Wave-length coverage contrast than T/R, the light that common port collimater is sent is after the transmission of wavelength-division multiplex diaphragm, by transmission collimater
Receive and export, the light of wavelength-division multiplex diaphragm reflection enters reflection end collimater after isolation improves diaphragm.
The lens that above-mentioned transmission collimater uses is G-lens eyeglasses or C-lens eyeglasses.
The present invention combines a two line collimaters using three single optical fiber calibrators instead of an existing single fiber collimater
WDM structure, avoid and improve diaphragm using the isolation that involves great expense, using routine wavelength-division multiplex diaphragm and every
Diaphragm is improved from degree, wavelength division multiplexer reflection isolation degree and transmission isolation can be significantly improved, structure is very simple, small volume
Cost is cheap, can be widely used for the fields such as fiber optic communication, Fibre Optical Sensor and dispersion compensation.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of wavelength division multiplexer in the prior art；
Fig. 2 is the structural representation of wavelength division multiplexer of the present invention.
1 common port collimater, 2 transmission collimaters, 3 reflection end collimaters, 4 wavelength-division multiplex diaphragms, 5 isolations improve in figure
Diaphragm.
Embodiment
As shown in Fig. 2 a kind of wavelength division multiplexer of highly transmissive isolation, by common port collimater 1, transmits collimater 2, anti-
Penetrate end collimater 3, wavelength-division multiplex diaphragm 4 and isolation improve diaphragm 5 and formed, common port collimater 1, transmission collimater 2 and anti-
It is single optical fiber calibrator to penetrate end collimater 3, and isolation improves diaphragm 5 and is arranged on the front end of reflection end collimater 3, and isolation improves film
The splitting ratio T/R of piece 5 and wavelength-division multiplex diaphragm 4 wave-length coverage contrast, the light that common port collimater 1 is sent are answered through wavelength-division
After being transmitted with diaphragm 4, received and exported by transmission collimater 2, the light that wavelength-division multiplex diaphragm 4 reflects improves diaphragm 5 through isolation
Enter reflection end collimater 3 afterwards, the lens that transmission collimater uses is G-lens eyeglasses or C-lens eyeglasses.
The present invention combines a two line collimaters using three single optical fiber calibrators instead of an existing single fiber collimater
WDM structure, avoid and improve diaphragm using the isolation that involves great expense, using routine wavelength-division multiplex diaphragm and every
Diaphragm is improved from degree, wavelength division multiplexer reflection isolation degree and transmission isolation can be significantly improved, structure is very simple, small volume
Cost is cheap, can be widely used for the fields such as fiber optic communication, Fibre Optical Sensor and dispersion compensation.
Claims (2)
- A kind of 1. wavelength division multiplexer of highly transmissive isolation, it is characterized in that accurate by common port collimater, transmission collimater, reflection end Straight device, wavelength-division multiplex diaphragm and isolation improve diaphragm composition, and common port collimater, transmission collimater and reflection end collimater are Single optical fiber calibrator, isolation improve diaphragm arrangement and improve diaphragm and wavelength-division multiplex film in reflection end collimater front end, isolation The splitting ratio T/R of piece wave-length coverage contrast, the light that common port collimater is sent is after the transmission of wavelength-division multiplex diaphragm, by saturating Penetrate collimater to receive and export, the light of wavelength-division multiplex diaphragm reflection enters reflection end collimater after isolation improves diaphragm.
- 2. the wavelength division multiplexer of highly transmissive isolation according to claim 1, it is characterized in that transmission collimater use is saturating Mirror is G-lens eyeglasses or C-lens eyeglasses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204379.8A CN107678095A (en) | 2017-11-27 | 2017-11-27 | The wavelength division multiplexer of highly transmissive isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204379.8A CN107678095A (en) | 2017-11-27 | 2017-11-27 | The wavelength division multiplexer of highly transmissive isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107678095A true CN107678095A (en) | 2018-02-09 |
Family
ID=61150670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711204379.8A Pending CN107678095A (en) | 2017-11-27 | 2017-11-27 | The wavelength division multiplexer of highly transmissive isolation |
Country Status (1)
| Country | Link |
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| CN (1) | CN107678095A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009634A (en) * | 2021-04-06 | 2021-06-22 | 深圳市特发信息光网科技股份有限公司 | Wavelength division multiplexing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1123892A (en) * | 1997-07-08 | 1999-01-29 | Nippon Telegr & Teleph Corp <Ntt> | Wavelength multiplexed optical coupling and branching circuit |
| CN2694633Y (en) * | 2004-04-16 | 2005-04-20 | 昂纳信息技术（深圳）有限公司 | High insulating degree wavelength-division multiplexer / demultiplexer |
| CN102081197A (en) * | 2010-11-11 | 2011-06-01 | 金海新源电气江苏有限公司 | Wavelength division multiplexer |
| CN203133316U (en) * | 2013-01-30 | 2013-08-14 | 深圳市阳明光电有限公司 | High isolation wavelength division multiplexing device |
-
2017
- 2017-11-27 CN CN201711204379.8A patent/CN107678095A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1123892A (en) * | 1997-07-08 | 1999-01-29 | Nippon Telegr & Teleph Corp <Ntt> | Wavelength multiplexed optical coupling and branching circuit |
| CN2694633Y (en) * | 2004-04-16 | 2005-04-20 | 昂纳信息技术（深圳）有限公司 | High insulating degree wavelength-division multiplexer / demultiplexer |
| CN102081197A (en) * | 2010-11-11 | 2011-06-01 | 金海新源电气江苏有限公司 | Wavelength division multiplexer |
| CN203133316U (en) * | 2013-01-30 | 2013-08-14 | 深圳市阳明光电有限公司 | High isolation wavelength division multiplexing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009634A (en) * | 2021-04-06 | 2021-06-22 | 深圳市特发信息光网科技股份有限公司 | Wavelength division multiplexing device |
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| CB02 | Change of applicant information |
Address after: 253000 No. 5880, Dongfanghong East Road, Dezhou Economic and Technological Development Zone, Shandong Province Applicant after: Shandong Yuehai Communication Technology Co.,Ltd. Address before: No. 1678, Chongde 1st Avenue, Dezhou Economic and Technological Development Zone, Shandong 253000 Applicant before: DEZHOU LIGHTSTAR TECHNOLOGY Co.,Ltd. |
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