CN109254354A - A kind of four port wavelength division multiplex devices - Google Patents
A kind of four port wavelength division multiplex devices Download PDFInfo
- Publication number
- CN109254354A CN109254354A CN201710569418.8A CN201710569418A CN109254354A CN 109254354 A CN109254354 A CN 109254354A CN 201710569418 A CN201710569418 A CN 201710569418A CN 109254354 A CN109254354 A CN 109254354A
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- China
- Prior art keywords
- collimator
- optical fiber
- wavelength
- diaphragm filter
- optical
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
A kind of four port wavelength division multiplex devices, including first collimator, second collimator and diaphragm filter, first collimator and the second collimator have two optical fiber respectively again, diaphragm filter allows the light of a part of wavelength to pass through, the reflection of another part light, first piece optical fiber of the optical signal transmission comprising multiple wavelength to first collimator, it is emitted on diaphragm filter through first collimator, optical signal comprising a part of wavelength is incident in the second collimator transmitted through diaphragm filter, and by first optical fiber output of the second collimator, optical signals diaphragm filter comprising another part wavelength is reflected into first collimator, again by second optical fiber output of first collimator, after optical signal transmission comprising multiple wavelength to second optical fiber of first collimator, with aforementioned optical path, second of a part of the second collimator of optical signals Optical fiber output, first optical fiber output of another part optical signals first collimator, the configuration of the present invention is simple are lost small.
Description
Technical field
The present invention relates to optical communication fields, more particularly to a kind of four port wavelength division multiplex devices.
Background technique
Optical wavelength division multiplexing (WDM, Wavelength Division Multiplexing) technology is the energy on an optical fiber
A kind of technology of multi-wavelength signals is transmitted simultaneously.It is to be multiplexed the optical signal set of different wave length altogether in transmitting terminal, and couple
It is transmitted, again separated the optical signal of combined wave length in receiving end and is made further in same root optical fiber on to lightguide cable link
Processing, recovers original signal and is sent into different terminals.Therefore, this technology becomes optical wavelength division multiplexing, abbreviation optical wavelength division multiplexing
Technology.
In your multiplex system of light wave point, filter is for filtering the part needed in input optical signal.But have in reality
With from A being transferred to B, the optical signal containing 2 two different wave lengths of λ 1 and λ puts down λ 1 when by C for a kind of demand
Signal, 2 signal of λ continue with being transferred to B.With from B being transferred to A, the optical signal containing 4 two different wave lengths of λ 3 and λ is passing through
C when, put down 3 signal of λ, 4 signal of λ continues with being transferred to A.This function is realized, if also needed with three port WDM
Want two-stage series connection that could complete, insertion loss is that three port WDM of two-stage is added.A kind of structure is just needed to damage to reduce insertion now
Consumption.
Summary of the invention
The purpose of the present invention is to provide a kind of four port wavelength division multiplex devices, can be the multiple waves transmitted in optical fiber
Long separate one by one is decomposed, and reduces insertion loss.
In order to achieve the above object, the technical solution of the present invention is as follows: a kind of four port wavelength division multiplex devices, it is characterised in that
Including first collimator, the second collimator and diaphragm filter, the first collimator and the second collimator have two respectively again
Optical fiber, the diaphragm filter allow the light of a part of wavelength to pass through, the reflection of another part light, the light letter comprising multiple wavelength
It number is transferred to first optical fiber of the first collimator, is emitted on the diaphragm filter through the first collimator, is wrapped
Optical signal containing a part of wavelength is incident in second collimator transmitted through the diaphragm filter, and quasi- by described second
First optical fiber output of straight device, diaphragm filter described in the optical signals comprising another part wavelength are reflected into described first
Collimator, then by second optical fiber output of the first collimator, the optical signal transmission comprising multiple wavelength to described first
Second optical fiber of collimator, is emitted on the diaphragm filter, the light comprising a part of wavelength through the first collimator
Signal is incident in second collimator transmitted through the diaphragm filter, and by second optical fiber of second collimator
It exports, diaphragm filter described in the optical signals comprising another part wavelength is reflected into the first collimator, then by described
First optical fiber output of first collimator.
Further, the first collimator and the second collimator are two independent double-fiber collimators.
Further, the diaphragm filter is diaphragm-type bandpass filter.
Further, the double-fiber collimator is combined by a double optical fiber head and a condenser lens.
Further, the double optical fiber head is made of a capillary and two optical fiber heads.
Further, the condenser lens is self-focusing lens.
Further, the condenser lens is single convex lens.
Beneficial effects of the present invention are that structure is simple, are lost small.
Detailed description of the invention
Fig. 1 is forward-propagating schematic diagram of the present invention；
Fig. 2 is backpropagation schematic diagram of the present invention；
Appended drawing reference: 201a/b first collimator, 202a/b diaphragm filter, the second collimator of 203a/b, 2011a/b,
2012a/b first collimator optical fiber, the second collimator optical fiber of 2031a/b, 2032a/b.
Specific embodiment
Now in conjunction with the drawings and specific embodiments, the present invention is further described.
A kind of four port wavelength division multiplex devices, are made of two double-fiber collimators and a diaphragm filter.Such as Fig. 1 institute
A kind of realization frame mode of the invention shown, the signal light comprising multiple wavelength are incident on collimator 201a from optical fiber 2011a,
Then it is emitted collimator 201a, is incident on diaphragm filter 202a, wherein including the signal light transmission filter of a part of wavelength
Wave device is then incident on collimator 203a, is exported through optical fiber 2032a, and the signal light comprising another part wavelength is through filter
Reflect back on collimator 201a, is exported by optical fiber 2012a.
Shown in Fig. 2 is reverse transfer schematic diagram of the invention, and the signal light comprising multiple wavelength is incident from optical fiber 2012b
To collimator 201b, it is then emitted collimator 201b, is incident on diaphragm filter 202b, wherein including the letter of a part of wavelength
Number light transmission wave filter is then incident on collimator 203b, is exported through optical fiber 2031b, the letter comprising another part wavelength
Number light returns on collimator 201b through filter reflection, is exported by optical fiber 2011a.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (7)
1. a kind of four port wavelength division multiplex devices, it is characterised in that including first collimator, the second collimator and diaphragm filter,
The first collimator and the second collimator have two optical fiber respectively again, and the diaphragm filter allows the light of a part of wavelength logical
It crosses, the reflection of another part light, first optical fiber of the optical signal transmission comprising multiple wavelength to the first collimator, through institute
It states first collimator to be emitted on the diaphragm filter, the optical signal comprising a part of wavelength is transmitted through the diaphragm filter
It is incident in second collimator, and includes another part wavelength by first optical fiber output of second collimator
Optical signals described in diaphragm filter be reflected into the first collimator, then it is defeated by second optical fiber of the first collimator
Out, the optical signal transmission comprising multiple wavelength is emitted to second optical fiber of the first collimator through the first collimator
Onto the diaphragm filter, the optical signal comprising a part of wavelength is incident on second standard transmitted through the diaphragm filter
On straight device, and by second optical fiber output of second collimator, film described in the optical signals comprising another part wavelength
Piece filter reflection is to the first collimator, then by first optical fiber output of the first collimator.
2. four port as described in claim 1 wavelength division multiplex device, it is characterised in that the first collimator and the second collimator
It is two independent double-fiber collimators.
3. four port as described in claim 1 wavelength division multiplex device, it is characterised in that the diaphragm filter is diaphragm-type band logical
Filter.
4. four port as claimed in claim 2 wavelength division multiplex device, it is characterised in that the double-fiber collimator, by a double light
Fine head and a condenser lens combine.
5. four port as claimed in claim 4 wavelength division multiplex device, it is characterised in that the double optical fiber head by a capillary and
Two optical fiber head compositions.
6. four port as claimed in claim 4 wavelength division multiplex device, it is characterised in that the condenser lens is self-focusing lens.
7. four port as claimed in claim 4 wavelength division multiplex device, it is characterised in that the condenser lens is single convex lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569418.8A CN109254354A (en) | 2017-07-13 | 2017-07-13 | A kind of four port wavelength division multiplex devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710569418.8A CN109254354A (en) | 2017-07-13 | 2017-07-13 | A kind of four port wavelength division multiplex devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109254354A true CN109254354A (en) | 2019-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710569418.8A Pending CN109254354A (en) | 2017-07-13 | 2017-07-13 | A kind of four port wavelength division multiplex devices |
Country Status (1)
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| CN (1) | CN109254354A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082445A1 (en) * | 2019-10-31 | 2021-05-06 | 福州高意光学有限公司 | Optical system capable of achieving multi-wavelength laser beam combining and splitting |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2404134Y (en) * | 1999-12-29 | 2000-11-01 | 华中理工大学 | Unit type extensible light multiplexing device |
| CN1764096A (en) * | 2005-10-26 | 2006-04-26 | 中山大学 | Optical add-drop multiplexer with adjustable wave length channel |
| CN102749675A (en) * | 2012-06-27 | 2012-10-24 | 暨南大学 | Structural long-period optical fiber grating |
| CN204576012U (en) * | 2015-05-04 | 2015-08-19 | 深圳市鹏大光电技术有限公司 | A kind of 4 port optical hybrid devices |
| CN206020718U (en) * | 2016-06-30 | 2017-03-15 | 苏州伽蓝致远电子科技股份有限公司 | Four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component |
| CN206281998U (en) * | 2016-12-14 | 2017-06-27 | 北极光电(深圳)有限公司 | A kind of miniature three port wavelength division multiplexer |
-
2017
- 2017-07-13 CN CN201710569418.8A patent/CN109254354A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2404134Y (en) * | 1999-12-29 | 2000-11-01 | 华中理工大学 | Unit type extensible light multiplexing device |
| CN1764096A (en) * | 2005-10-26 | 2006-04-26 | 中山大学 | Optical add-drop multiplexer with adjustable wave length channel |
| CN102749675A (en) * | 2012-06-27 | 2012-10-24 | 暨南大学 | Structural long-period optical fiber grating |
| CN204576012U (en) * | 2015-05-04 | 2015-08-19 | 深圳市鹏大光电技术有限公司 | A kind of 4 port optical hybrid devices |
| CN206020718U (en) * | 2016-06-30 | 2017-03-15 | 苏州伽蓝致远电子科技股份有限公司 | Four port hybrid type of low-loss, two wave-length division is multiplexed optical passive component |
| CN206281998U (en) * | 2016-12-14 | 2017-06-27 | 北极光电(深圳)有限公司 | A kind of miniature three port wavelength division multiplexer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082445A1 (en) * | 2019-10-31 | 2021-05-06 | 福州高意光学有限公司 | Optical system capable of achieving multi-wavelength laser beam combining and splitting |
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Application publication date: 20190122 |