CN107132621A - A kind of CWDM wavelength division multiplexers and its manufacture craft - Google Patents
A kind of CWDM wavelength division multiplexers and its manufacture craft Download PDFInfo
- Publication number
- CN107132621A CN107132621A CN201710442435.5A CN201710442435A CN107132621A CN 107132621 A CN107132621 A CN 107132621A CN 201710442435 A CN201710442435 A CN 201710442435A CN 107132621 A CN107132621 A CN 107132621A
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- China
- Prior art keywords
- lens
- optical filter
- optical
- groove
- wavelength division
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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
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The present invention is applied to fiber optic communication field, there is provided a kind of CWDM wavelength division multiplexers, including lens, optical filter and optical cement, the lens are provided with the groove matched with the optical filter, optical cement is provided with the groove, the optical filter is fitted on the lens by optical cement, the width of the groove is less than the width of the optical filter, the face bonded on the lens with the optical filter, it is parallel with the surface for stating optical filter bonded, filter plate in the present invention realizes parallel bonding with lens, angular deviation is substantially not present between filter plate and lens, insertion loss also can be largely reduced under multichannel case, by to the improvement in structure, reduce debugging step, accelerate production process, realize that CWDM wavelength division multiplexers module is minimized, it is integrated.
Description
Technical field
The invention belongs to fiber optic communication field, more particularly to a kind of CWDM wavelength division multiplexers and its manufacture craft.
Background technology
Wavelength-division multiplex technique is exactly to make full use of the enormous bandwidth resource that single-mode fiber low-loss is brought according to each
Channel light wave wavelength difference the low-loss zoning of optical fiber can be divided into several channels light wave as signal carrier wave,
The signal light carrier of different wave length is combined a piece optical fiber of feeding using the wave multiplexer of wavelength division multiplexer and passed by transmitting terminal
It is defeated.In receiving terminal, then these different wave lengths are carried to by the channel-splitting filter of wavelength division multiplexer the answering of separating of light carrier of unlike signal
Use mode.Due to the optical carrier of different wave length be considered as it is separate, so that multichannel can be realized in an optical fiber
The multiplexing transmission of optical signal, is arranged in different wave length transmission by the signal of both direction and transmitted in both directions can be achieved respectively.
According to the difference of channel spacing, wavelength-division multiplex can be subdivided into coarse wavelength division multiplexer and dense wave division multipurpose, sparse
The channel spacing of wavelength-division multiplex is 20nm, and the channel spacing of dense wave division multipurpose is from 0.2nm to 1.2nm, so relative to close
Collect wavelength-division multiplex, coarse wavelength division multiplexer is referred to as coarse wave division multiplexing technology.
Existing CWDM devices are to be realized by lens, CWDM optical filters and collimater, wherein the ripple of incident flashlight light
A length of λ 1 ... λ 8, after the first CWDM optical filters, wavelength for λ 1 flashlight transmitted through the first CWDM optical filters, and pass through standard
Straight device 401 is converted to parallel light output, and the signal light total reflection of other wavelength passes through the 2nd CWDM optical filters, and wavelength is λ 2 letter
Number light transmission crosses the 2nd CWDM optical filters, and is converted to parallel light output, the signal light total reflection of other wavelength by collimater
By the 3rd CWDM optical filters, wavelength is converted to parallel for λ 3 flashlight transmitted through the 3rd CWDM optical filters and by collimater
Light output, the signal light total reflection of other wavelength passes through the 4th CWDM
Optical filter, wavelength transmitted through the 4th CWDM optical filters and is converted to parallel light output for λ 4 flashlight by collimater；
The like, by some row optical filters transmission, reflection, different wave length signal is assigned to behind different ports collimate it is defeated
Go out.
But because traditional CWDM optical filterings patch technique on chip can not ensure optical filter problem parallel with lens, with port number
Increase, cause incident angle of light deviation trigger optical power loss, limit the increase of optical channel number；And because angular deviation causes
Output light path deflection needs the coupling debugging of collimation device, limits batch production efficiency, so cause each structure members of CWDM without
The further modularization of method, miniaturization.
The content of the invention
It is an object of the invention to provide a kind of CWDM wavelength division multiplexers, it is intended to the filters of CWDM in the prior art of solution
Mating plate dress patch technique can not ensure optical filter problem parallel with lens, with the increase of port number, cause incident angle of light deviation
Trigger optical power loss, limit the increase of optical channel number；And because angular deviation causes output light path deflection to need collimation device
Coupling debugging, limits batch production efficiency, so cause each structure members of CWDM can not further modularization, miniaturization asks
Topic.
The present invention is achieved in that a kind of CWDM wavelength division multiplexers, including lens, optical filter and optical cement, the lens
Provided with the groove matched with the optical filter, optical cement is provided with the groove, the optical filter fits in described by optical cement
On lens.
The present invention further technical scheme be：The width of the groove is less than the width of the optical filter.
The present invention further technical scheme be：The width of the groove is the 60% ~ 80% of the width of the optical filter.
The present invention further technical scheme be：The edge of the optical filter scribbles optical cement with the lens junction.
The present invention further technical scheme be：The face bonded on the lens with the optical filter, with the optical filter
Surface it is parallel.
The present invention further technical scheme be：The face bonded on the lens with the optical filter, with the optical filter
The surface depth of parallelism be not more than 0.005mm.
Another object of the present invention is to provide a kind of manufacture craft of CWDM wavelength division multiplexers, the manufacture craft includes
Following steps：
A:The region of some grooves is avoided on the lens, layer protecting film is smeared；
B:The lens for coating diaphragm are put into etching solution and are etched, treat that groove etching is finished；
C:The lens after the etching are taken out, are cleaned, and remove diaphragm；
D:The optical filter is affixed on the groove location, toward the interior injection optical cement of the groove；
E:Baking-curing.
The present invention further technical scheme be：Also include step B0 before the step B：By the concentration and temperature of etching solution
Degree is adjusted to special value.
The present invention further technical scheme be：Also include step D1 after the step D：Optical filtering is posted on the lens
The face of piece is parallel with the optical filter.
The present invention further technical scheme be：Also include step D2 after the step D1：The edge of the optical filter
Optical cement is coated with the lens junction.
The beneficial effects of the invention are as follows：Filter plate in the present invention and lens realize parallel bonding, filter plate and lens it
Between be substantially not present angular deviation, insertion loss also can be largely reduced under multichannel case, by structure
Improvement, reduce debugging step, accelerate production process, realize CWDM wavelength division multiplexers module minimize, it is integrated.
Brief description of the drawings
Fig. 1 is CWDM wavelength division multiplexers schematic diagram provided in an embodiment of the present invention；
Fig. 2 is the fabrication processing figure of CWDM wavelength division multiplexers provided in an embodiment of the present invention.
Reference：1- lens 2- groove 3- optical filters.
Embodiment
As shown in figure 1, CWDM wavelength division multiplexers of the present invention include lens 1, optical filter 3 and optical cement, the lens 1
Provided with the groove 2 matched with the optical filter 3, optical cement is provided with the groove 2, the optical filter 3 is fitted in by optical cement
On the lens 1, the optical cement is completely disposed in the groove 2, and groove 2 is filled up, and the optical filter 3 can then pass through
The optical cement it is sticky fully integrated on the lens 1, it is ensured that the optical filter 3 is parallel with the lens 1.
In order to preferably ensure that the optical filter 3 is parallel with the lens 1, the width of the groove 2 should be less than the filter
The width of mating plate 3, the edge of the optical filter 3 can then be contacted with the lens 1, it is fitted completely, in the present invention preferably
, the width of the groove 2 is set to the 60% ~ 80% of the width of the optical filtering 3.
As shown in figure 1, in order to ensure stationarity that the optical filter 3 is fitted, the edge of the optical filter 3 with it is described
The junction of mirror 1 scribbles optical cement, carries out secondary fixation.
By improvement of the present invention in structure, the face bonded on the lens 1 with the optical filter 3 is filtered with described
The surface depth of parallelism of piece 3 is not more than 0.005mm.
Such as the flow diagram of the manufacture craft of Fig. 2 CWDM wavelength division multiplexers, manufacture craft specific steps of the invention are such as
It is lower described：
S1：Diaphragm is applied, the region of some grooves is avoided on the lens, layer protecting film is smeared；
S2：Etching solution is equipped with, in order to obtain different accuracy, lens of different shapes, concentration and the temperature adjustment of etching solution is adjusted
To special value；
S3：Etching, will apply the lens that wipe diaphragm and is put into etching solution and is etched, and the region for scribbling diaphragm will not be by
Etching solution is etched, and being not coated with the region of diaphragm can then be etched, and the part of etching is groove；
S4：Cleaning, after treating that groove etching is finished, lens are taken out, the etching solution remained on lens is cleaned, it is to avoid erosion
Carve liquid and lens are caused with damage, by the protection membrane removal on lens after the etching solution cleaning of residual is finished；
S5：Optical filter is pasted, optical filter edge is close on lens, it is ensured that optical filter is parallel with lens surface；
S6：Compress, optical filter is pressed in groove location, then toward filling optical cement in the groove etched；
S7：It is fixed, coat optical cement at the edge of optical filter and lens junction, it is ensured that the stationarity of optical filter；
S8：Solidification, after optical filter is posted, is toasted, and optical cement solidification, optical filter is firmly fitted on lens by optical cement.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of CWDM wavelength division multiplexers, including lens（1）, optical filter（3）And optical cement, it is characterised in that the lens（1）On
Provided with the optical filter（3）The groove of matching（2）, the groove（2）It is interior to be provided with optical cement, the optical filter（3）Pass through optical cement
Fit in the lens（1）On.
2. CWDM wavelength division multiplexers according to claim 1, it is characterised in that the groove（2）Width be less than it is described
Optical filter（3）Width.
3. CWDM wavelength division multiplexers according to claim 2, it is characterised in that the groove（2）Width be the filter
Mating plate（3）Width 60% ~ 80%.
4. CWDM wavelength division multiplexers according to claim 3, it is characterised in that the optical filter（3）Edge with it is described
Lens（1）Junction scribbles optical cement.
5. CWDM wavelength division multiplexers according to claim 4, it is characterised in that the lens（1）The upper and optical filter
（3）Cohesive face, with the optical filter（3）Surface it is parallel.
6. CWDM wavelength division multiplexers according to claim 5, it is characterised in that the lens（1）The upper and optical filter
（3）Cohesive face, with the optical filter（3）The surface depth of parallelism be not more than 0.005mm.
7. a kind of manufacture craft for being used to make CWDM wavelength division multiplexers any one of claim 1 to 6, its feature exists
In the manufacture craft comprises the following steps：
A:In the lens（1）On avoid some grooves（2）Region, smear layer protecting film；
B:By the lens for coating diaphragm（1）It is put into etching solution and is etched, treats groove（2）Etching is finished；
C:Take out the lens after the etching（1）, cleaning, and remove diaphragm；
D:By the optical filter（3）It is affixed on the groove（2）Position, toward the groove（2）Interior injection optical cement；
E:Baking-curing.
8. manufacture craft according to claim 7, it is characterised in that also include step B0 before the step B：Will etching
The concentration and temperature of liquid are adjusted to special value.
9. manufacture craft according to claim 7, it is characterised in that also include step D1 after the step D：It is described
Mirror（1）On post optical filter（3）Face and the optical filter（3）It is parallel.
10. manufacture craft according to claim 9, it is characterised in that also include step D2 after the step D1：It is described
Optical filter（3）Edge and the lens（1）Coat optical cement in junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442435.5A CN107132621A (en) | 2017-06-13 | 2017-06-13 | A kind of CWDM wavelength division multiplexers and its manufacture craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442435.5A CN107132621A (en) | 2017-06-13 | 2017-06-13 | A kind of CWDM wavelength division multiplexers and its manufacture craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107132621A true CN107132621A (en) | 2017-09-05 |
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ID=59734086
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442435.5A Pending CN107132621A (en) | 2017-06-13 | 2017-06-13 | A kind of CWDM wavelength division multiplexers and its manufacture craft |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241298A (en) * | 2007-02-08 | 2008-08-13 | 精碟科技股份有限公司 | Projecting system and its photoconductor tube |
| CN202771036U (en) * | 2012-09-26 | 2013-03-06 | 福建中策光电科技有限公司 | CWDM wavelength division multiplexer |
| CN105425338A (en) * | 2015-11-10 | 2016-03-23 | 武汉电信器件有限公司 | Wavelength division multiplexing/demultiplexing component |
| CN106646779A (en) * | 2017-01-03 | 2017-05-10 | 青岛海信宽带多媒体技术有限公司 | Optical module |
-
2017
- 2017-06-13 CN CN201710442435.5A patent/CN107132621A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241298A (en) * | 2007-02-08 | 2008-08-13 | 精碟科技股份有限公司 | Projecting system and its photoconductor tube |
| CN202771036U (en) * | 2012-09-26 | 2013-03-06 | 福建中策光电科技有限公司 | CWDM wavelength division multiplexer |
| CN105425338A (en) * | 2015-11-10 | 2016-03-23 | 武汉电信器件有限公司 | Wavelength division multiplexing/demultiplexing component |
| CN106646779A (en) * | 2017-01-03 | 2017-05-10 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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Application publication date: 20170905 |