CN203502619U - Multipath wavelength division multiplexing and demultiplexing device - Google Patents
Multipath wavelength division multiplexing and demultiplexing device Download PDFInfo
- Publication number
- CN203502619U CN203502619U CN201320543299.6U CN201320543299U CN203502619U CN 203502619 U CN203502619 U CN 203502619U CN 201320543299 U CN201320543299 U CN 201320543299U CN 203502619 U CN203502619 U CN 203502619U
- Authority
- CN
- China
- Prior art keywords
- array
- light
- wavelength division
- optical fiber
- light splitting
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 59
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 abstract description 5
- 238000004891 communication Methods 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 239000008207 working material Substances 0.000 description 1
Images
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model discloses a multipath wavelength division multiplexing and demultiplexing device, and belongs to the field of optical communication equipment. The wavelength division multiplexing and demultiplexing device comprises array fibers, a collimating lens and a light-splitting assembly which are sequentially arranged in a row and disposed inside a housing. A part of the array fibers are served as incident ends, and the other array fibers are served as emitting ends. The front surface of the light-splitting assembly arranged behind the collimating lens is provided with a microlens array, and the back surface of the light-splitting assembly is plated with a reflective film. Light with different wavelengths can be separated according to different angles by the light-splitting assembly, and can be focused into the different optical fibers of the fiber array. The wavelength division multiplexing and demultiplexing device is simple in structure, is convenient to assemble, and beams can be multiplexed and demultiplexed. The wavelength division multiplexing and demultiplexing device is advantaged by small packaging dimension and good temperature stability.
Description
Technical Field
The utility model relates to an optical fiber communication equipment field especially relates to a multichannel wavelength division multiplexing and demultiplexer of compact.
Background
Since the last 80 century, optical fiber communication technology has been developed vigorously, and Wavelength Division Multiplexing (WDM) systems have been widely used in communication systems in order to make better use of bandwidth resources in optical fibers. The wavelength division multiplexing technique is a technique for increasing transmission capacity in a same optical fiber by times. The wavelength division multiplexing technique is realized by multiplexing and demultiplexing. The conventional wavelength division multiplexer and demultiplexer is implemented by a filter type or an AWG type, and the filter type wavelength division multiplexer is a WDM multiplexing and demultiplexing module composed of two or more of such single devices connected in series. The multiplexing and demultiplexing module with the structure has large insertion loss and large packaging size, and the AWG type wavelength division multiplexer is greatly influenced by temperature and is not beneficial to the integration of a wavelength division multiplexing system.
In recent years, a plurality of manufacturers improve the structure of the traditional wavelength division multiplexing and demultiplexing device, a series of narrow band filters and collimators are fixed on a substrate, light beams enter through one collimator, firstly pass through a first narrow band filter, transmit light with one wavelength to a first output collimator, simultaneously reflect light with other wavelengths to a second narrow band filter, then pass through light with another wavelength to be coupled to a second output collimator, and the like to form the multi-path WDM multiplexing and demultiplexing device. The WDM demultiplexer of the improved structure has a small package size compared to the conventional structure, but has a disadvantage of being not easy to assemble.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a multiplexing of multichannel wavelength division and demultiplexer, its compact structure, it is small, the system integration of being convenient for can solve the problem that current multiplexing and demultiplexer is bulky difficult for the integration.
In order to solve the above technical problem, the utility model provides a multiplexer and demultiplexer, include:
the array optical fiber, the collimating lens and the light splitting component are packaged in the shell; wherein,
the array optical fiber, the collimating lens and the light splitting component are arranged in a row and are sequentially arranged in the shell;
one part of the optical fibers in the array optical fibers are incident ends, and the other optical fibers are emergent ends;
the front surface of the light splitting component arranged behind the collimating lens is a micro-lens array, the back surface of the light splitting component is plated with a reflecting film, and the light splitting component can split and focus light with different wavelengths into different optical fibers of the optical fiber array according to different angles.
The utility model has the advantages that: the array optical fiber, the collimating lens and the light splitting component are arranged in the shell, particularly, the front side of the light splitting component is the micro lens array, the back side of the light splitting component is coated with the reflecting film, the light paths are overlapped to the maximum extent, wherein the collimating lens is shared by all the light paths, the space and the cost of the wavelength division multiplexing and demultiplexing device are greatly saved, the whole volume of the wavelength division multiplexing and demultiplexing device is more than half smaller than that of the existing improved WDM device, the assembly is easy, meanwhile, the light paths are short, the temperature effect is not obvious, and the advantages of the existing AWG and optical filter type wavelength division multiplexer are considered.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a demultiplexer and a multiplexer provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a light splitting assembly with a microlens array according to an embodiment of the present invention;
fig. 3 is a schematic view of an optical path structure of a single lens in the light splitting assembly according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a lattice structure on focal planes with different wavelengths according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a multichannel wavelength division multiplexing and demultiplexer, as shown in fig. 1, include:
an array fiber 302, a collimator lens 303, and a light splitting assembly 304 enclosed in a housing (not shown in the figure); wherein,
the array optical fiber 302, the collimating lens 303 and the light splitting component 304 are arranged in a row and are sequentially arranged in the shell;
a part of the optical fibers in the array optical fibers 302 are incident ends, and other optical fibers are emergent ends;
the front surface of the light splitting assembly 304 disposed behind the collimating lens 303 is a microlens array, and the back surface is coated with a reflective film, so that the light splitting assembly 304 can split and focus light with different wavelengths into different optical fibers of the optical fiber array 302 according to different angles.
In the above-mentioned demultiplexer, the back surface of the light splitting unit 304 is an inclined surface, and the width of the bottom end of the backlight unit 304 is larger than that of the top end thereof.
In the above-described wavelength division multiplexing/demultiplexing device, the array fiber 302 includes: a body and a plurality of optical fibers 3011, 3012 to 301m arranged in a one-dimensional array on the body; when the optical fiber is used as a wavelength division multiplexer, one optical fiber 3011 is used as an emergent end, and the other optical fibers 3012 to 301m are used as incident ends; when the optical fiber is used as a wavelength division demultiplexer, one of the optical fibers 3011 serves as an incident end, and the other optical fibers 3012 to 301m serve as exit ends.
In the above described demultiplexer, the optical fibers in the array fiber 302 are arranged at equal intervals.
The present invention will be further explained with reference to the drawings and the working materials.
The embodiment of the utility model provides a multichannel wavelength division multiplexing and demultiplexer, its compact structure, it is small, the system integration of being convenient for, as shown in fig. 1, this wavelength division multiplexing and demultiplexer includes: an array fiber 302, a collimating lens 303, a light splitting component 304 and a housing;
the array optical fiber 302, the collimating lens 303 and the light splitting component 304 are arranged in a row in the shell;
when the optical fiber array is used as a wavelength division demultiplexer, one optical fiber 3011 of the optical fiber array is used as an incident end, and the other optical fibers 3012-301 m are used as emergent ends; when the optical fiber array is used as a wavelength division multiplexer, one optical fiber 3011 of the optical fiber array is used as an emergent end, and the other optical fibers 3012-301 m are used as incident ends;
the light splitting assembly 304 is arranged behind the collimating lens 303, a reflecting film is plated on the back surface of the light splitting assembly 304, a micro-lens array is arranged on the front surface of the light splitting assembly, the light can be dispersed and reflected, the light splitting interference effect can be achieved, and the reflected light enters the optical fiber array through the collimating lens.
The input fiber as shown in fig. 1 contains multi-wavelength information; after passing through the collimating lens 303, the light becomes parallel light, and enters the light splitting assembly 304, the micro lens array in front of the light splitting assembly 304 splits the incident light beam into sub light sources, as shown in fig. 2, it is assumed that the period of each sub aperture of two focusing lenses in the micro lens array is P, after the light becomes the micro lens array, since the back of the light splitting assembly 304 has a reflecting surface with a coating film inclined at a certain angle, it is assumed that the focal length after passing through the micro lens array and reflecting is Fml; a plurality of sub light sources after passing through the micro lens array interfere with each other, an interference dot matrix is formed on a focal plane of the focusing lens after passing through the focusing lens, and the output optical fiber is placed on the focal plane; as shown in fig. 3, different wavelengths will be focused at different positions, so that different wavelengths form different lattice with spacing Lm, Lm and wavelength spacing Δ λ, satisfying the following formula:
Lm=△λ×Flens/P；
in addition, the size A of the whole lattice meets the following formula;
A=Lm×Lm/(λ*Fml)；
in the above-mentioned light splitting module 304, the reflected light passing through different microlenses will interfere, and different wavelengths will form interference enhancement positions at different positions, and by arranging appropriate fiber receiving arrays, the light of different wavelengths can be split.
In the array fiber, the fibers may be arranged at equal intervals.
Further, the arrayed optical fibers in the above-described multiplexer/demultiplexer may be replaced with arrayed waveguides to reduce the intervals between the optical fibers.
In the wavelength division multiplexer and demultiplexer, since the incident optical fiber and the reflective optical fiber are both disposed in the same array optical fiber 302, the size of the device can be greatly reduced.
In the wavelength division multiplexer and demultiplexer, the back surface of the optical splitter has a certain angle, so that the positions of the reflected light and the incident light can be separated.
In the wavelength division multiplexer and demultiplexer, the front end surface of the optical splitting component 304 is a microlens array, and the microlens array has the function of making the reflected light have a certain angle so that the light with different wavelengths is output corresponding to different angles.
The utility model discloses a multichannel wavelength division multiplexing and demultiplexer during operation, the light beam passes through an optic fibre 3011 among the array fiber 302 and incides collimating lens 303, behind collimating lens 303, become the parallel light and incide on beam splitting component 304, the reflective coating is plated at beam splitting component's the back, preceding for the microlens array, can realize the effect of the divergence and reflection and the beam splitting of light and interfere, the reverberation still passes through collimating lens, get into fiber array, realize the function of demultiplexing. In the same way, light beams with different wavelengths are incident into a specific optical fiber array, and the wavelength division multiplexing can be realized through the focusing lens and the light splitting component.
The utility model discloses a beam split subassembly structure size is less, can adopt the glass material of low temperature sensitivity simultaneously, so the temperature sensitivity of whole device is very low, and the effectual unstability that avoids the ambient temperature change to cause the device performance.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A multiplexer/demultiplexer, comprising:
the array optical fiber, the collimating lens and the light splitting component are packaged in the shell; wherein,
the array optical fiber, the collimating lens and the light splitting component are arranged in a row and are sequentially arranged in the shell;
one part of the optical fibers in the array optical fibers are incident ends, and the other optical fibers are emergent ends;
the front surface of the light splitting component arranged behind the collimating lens is a micro-lens array, the back surface of the light splitting component is plated with a reflecting film, and the light splitting component can split and focus light with different wavelengths into different optical fibers of the optical fiber array according to different angles.
2. The wdm-demux and demultiplexer of claim 1 wherein the back surface of the light splitting module is a slanted surface and the bottom end of the backlight module has a width greater than the top end thereof.
3. The wdm-demux and demultiplexer of claim 1 or 2, wherein said arrayed fiber comprises: the optical fiber module comprises a body and a plurality of optical fibers arranged on the body in a one-dimensional array; when the optical fiber is used as a wavelength division multiplexer, one optical fiber is used as an emergent end, and the other optical fibers are used as incident ends; when the optical fiber is used as a wavelength division demultiplexer, one optical fiber is used as an incident end, and the other optical fibers are used as an emergent end.
4. The wdm-demux and demultiplexer of claim 3 wherein the fibers in the array are equally spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543299.6U CN203502619U (en) | 2013-09-02 | 2013-09-02 | Multipath wavelength division multiplexing and demultiplexing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320543299.6U CN203502619U (en) | 2013-09-02 | 2013-09-02 | Multipath wavelength division multiplexing and demultiplexing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203502619U true CN203502619U (en) | 2014-03-26 |
Family
ID=50333588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320543299.6U Expired - Lifetime CN203502619U (en) | 2013-09-02 | 2013-09-02 | Multipath wavelength division multiplexing and demultiplexing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203502619U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212670A (en) * | 2018-10-10 | 2019-01-15 | 武汉光迅科技股份有限公司 | A kind of wavelength division multiplex device and corresponding optical module |
-
2013
- 2013-09-02 CN CN201320543299.6U patent/CN203502619U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212670A (en) * | 2018-10-10 | 2019-01-15 | 武汉光迅科技股份有限公司 | A kind of wavelength division multiplex device and corresponding optical module |
| CN109212670B (en) * | 2018-10-10 | 2020-05-12 | 武汉光迅科技股份有限公司 | Wavelength division multiplexing device and corresponding optical module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9519151B2 (en) | Optical multiplexer and transmitter optical subassembly | |
| KR102285021B1 (en) | Bidirectional optical assembly, optical network unit, optical line terminal, and passive optical network system | |
| KR102628638B1 (en) | multi-channel optocoupler | |
| US7184621B1 (en) | Multi-wavelength transmitter optical sub assembly with integrated multiplexer | |
| EP3088928B1 (en) | Optical transceiver and optical communications product | |
| US7198416B2 (en) | Optical combiner device | |
| JP2020021013A (en) | WDM optical module, WDM optical module, and optical module | |
| CN205157844U (en) | Parallel light -receiving subassembly and optical module of multichannel wavelength | |
| WO2017067068A1 (en) | Wavelength division multiplexing/de-multiplexing optical transceiver assembly based on diffraction grating | |
| JP2007264033A (en) | Optical module, optical transmission system, and optical module manufacturing method | |
| US20160187585A1 (en) | Optical fitler subassembly for compact wavelength demultiplexing device | |
| US9715115B2 (en) | Wavelength division multiplexing of uncooled lasers with wavelength-common dispersive element | |
| WO2023040536A1 (en) | Single-fiber multi-directional optical transceiver and optical module | |
| US20160191192A1 (en) | Assembly of standard dwdm devices for use on free-space multiport dwdm devices | |
| CN110520773A (en) | Toroidal shape microlens array for wavelength-selective switches | |
| CN203502618U (en) | Multipath wavelength division multiplexer | |
| CN205427248U (en) | Take emission of light subassembly, opto -receiver module and optical module of aimer | |
| WO2019153225A1 (en) | Wavelength division multiplexing/demultiplexing optical fiber coupling module and optical apparatus thereof | |
| CN108551372B (en) | Multi-wavelength space dislocation divides and closes ripples module | |
| CN201886169U (en) | Multiplexing/demultiplexing double-function wavelength multiplexing device | |
| CN210605101U (en) | Multipath wavelength demultiplexing light receiving component based on optical waveguide | |
| CN203502619U (en) | Multipath wavelength division multiplexing and demultiplexing device | |
| CN214623124U (en) | Array wavelength division multiplexing receiver assembly | |
| JP2009093131A (en) | Array type tap photodiode module and its manufacturing method | |
| CN210666094U (en) | Multi-wavelength splitting receiving module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |