CN206248882U - A kind of wavelength division multiplex device - Google Patents
A kind of wavelength division multiplex device Download PDFInfo
- Publication number
- CN206248882U CN206248882U CN201621250389.6U CN201621250389U CN206248882U CN 206248882 U CN206248882 U CN 206248882U CN 201621250389 U CN201621250389 U CN 201621250389U CN 206248882 U CN206248882 U CN 206248882U
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- China
- Prior art keywords
- optical fibre
- glass tube
- wavelength division
- division multiplex
- interior
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Abstract
The utility model is related to a kind of wavelength division multiplex device, belongs to optical communication field.Its described input optical fibre（100）Output end set grin lenses（130）, and and grin lenses（130）Incidence end be connected, the exit end of the grin lenses plates the filter membranous layer of selective transmission optical band（133）；The output optical fibre（200）Input set GRADIUM lens（230）, and with GRADIUM lens（230）It is connected, the output optical fibre（200）With GRADIUM lens（230）It is placed in glass tube II（250）It is interior, the GRADIUM lens（230）Light incident side expose glass tube II（250）Port, in the glass tube II（250）Outer layer set in stainless steel tube II（270）；Also include sleeve pipe（310）, the interior stainless steel tube I（170）With interior stainless steel tube II（270）It is wrapped in sleeve pipe（310）It is interior.A kind of wavelength division multiplex device of the utility model, shortens light path, reduces the volume of whole wavelength division multiplex device, makes more compact structure, more integrated, performance better.
Description
Technical field
The utility model is related to a kind of wavelength division multiplex device, belongs to optical communication field.
Background technology
In fiber optic communication systems, wavelength-division multiplex technique has turned into its vital part.In the prior art, ripple
Division multiplexing device is a kind of partial wave or multiplex device, and it can believe the light wave in light source, optical fiber, integrated circuit or other fiber waveguides
Number selectively separated or coupled.
Fig. 1 is traditional wavelength division multiplexer index path, wherein 101,102,103 is optical fiber, 21 is double optical fiber head, and 22 are
Single fiber head, 31,32 is GRIN Lens, and 41 is DWDM optical filters.There is the flashlight of the incidence of optical fiber 101 individual comprising n (n >=2)
Signal wavelength, by turning into collimated light beam, when being incident to DWDM optical filters 41, one of which wavelength after the focusing of GRIN Lens 31
Light transmission, and the light of its commplementary wave length reflects, and transmitted light beam is incident to through GRIN Lens 32 point penetrates optical fiber 103, and reflected light
Enter to divide after Shu Zejing GRIN Lens 31 and penetrate optical fiber 102.Due to the presence of DWDM optical filters, make from the outgoing of DWDM optical filters 41
Light there is displacement to the right, cause and can not suffer too near between GRIN Lens 31, GRIN Lens 32, light path extension, thoroughly
It is serious that irradiating light beam is incident to point loss for penetrating optical fiber 103 through GRIN Lens 32.
The content of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided it is a kind of it is more integrated, light path, structure can be shortened more
The better wavelength division multiplex device of compact, performance.
What the purpose of this utility model was realized in：
A kind of wavelength division multiplex device of the utility model, it includes input optical fibre and output optical fibre, the input optical fibre and defeated
Go out the central shaft of optical fiber respectively with light shaft coaxle, the output end of the input optical fibre sets grin lenses, and with grin lenses
Incidence end is connected, and the exit end of the grin lenses plates the filter membranous layer of selective transmission optical band, the input optical fibre with
Grin lenses are placed in glass tube I, and the light exit side of the grin lenses exposes the port of glass tube I, in the glass tube I
Outer layer set in stainless steel tube I；
The input of the output optical fibre sets GRADIUM lens, and is connected with GRADIUM lens, the output optical fibre
It is placed in glass tube II with GRADIUM lens, the light incident side of the GRADIUM lens exposes the port of glass tube II,
The outer layer of the glass tube II sets interior stainless steel tube II；
Also include sleeve pipe, the interior stainless steel tube I is wrapped in sleeve pipe 310 with interior stainless steel tube II.
The central shaft of described sleeve pipe is parallel with optical axis.
The thickness of the filter membranous layer is 0.1 micron~10 microns.
The filter membranous layer is 25GHz, 50GHz, 100GHz through the wave band of frequency.
Compared with prior art, the beneficial effects of the utility model are：
The utility model grin lenses and filter membranous layer substitution GRIN Lens and DWDM optical filters, and shorten light
Road, the volume for reducing whole wavelength division multiplex device, make more compact structure, more integrated, performance better.
Brief description of the drawings
Fig. 1 is the structural representation of traditional multichannel wavelength division multiplex device；
Fig. 2 is a kind of example structure schematic diagram of wavelength division multiplex device of the utility model；
Wherein：
Input optical fibre 100
Grin lenses 130
Filter membranous layer 133
Glass tube I 150
Interior stainless steel tube I 170
Output optical fibre 200
GRADIUM lens 230
Glass tube II 250
Interior stainless steel tube II 270
Sleeve pipe 310
Optical axis 400.
Specific embodiment
Referring to Fig. 2, the utility model is related to a kind of wavelength division multiplex device, and its left side is output for input optical fibre 100, right side
The central shaft of optical fiber 200, input optical fibre 100 and output optical fibre 200 is coaxial with optical axis 400 respectively.
The output end of input optical fibre 100 sets grin lenses 130, and is connected with the incidence end of grin lenses 130, and GRIN is saturating
Mirror 130 can collimate and receive flashlight.The filter membranous layer of selective transmission optical band is plated in the exit end of grin lenses 130
133, its thickness is 0.1 micron~10 microns.Because the thickness of filter membranous layer 133 is micron order, grin lenses 130 are not influenceed
Focal length.The specific wavelength of the filter membranous layer 133 is determined by device logical optical wavelength, collimation is played in the optical path and reflected light is coupled to
The effect of optical fiber.
The filter membranous layer 133 can pass through the wave band of the frequencies such as 25GHz, 50GHz, 100GHz.Input optical fibre 100 and GRIN
Lens are placed in glass tube I 150, and the light exit side of wherein grin lenses exposes the port of glass tube I 150, in the glass tube I
150 outer layer sets interior stainless steel tube I 170.
The input of output optical fibre 200 sets GRADIUM lens 230, and is connected with GRADIUM lens 230, GRADIUM
The spherical shape of the plane of incidence of lens 230, the focal length of its focal distance ratio grin lens 130 is short.The output optical fibre 200 is saturating with GRADIUM
Mirror 230 is placed in glass tube II 250, and the light incident side of wherein GRADIUM lens 230 exposes the port of glass tube II 250.Should
The outer layer of glass tube II 250 sets interior stainless steel tube II 270.
Interior stainless steel tube I 170 is wrapped in sleeve pipe 310 with interior stainless steel tube II 270, the central shaft and light of the sleeve pipe 310
Axle 400 is parallel.
When using, selected through the collimator and extender of grin lenses 130, filter membranous layer 133 by the optical signal of the outgoing of input optical fibre 100
Property filter, a portion light is received and coupled in output optical fibre 200 through GRADIUM lens 230 again, so as to reach multiplex
Purpose.
The utility model constitute wavelength division multiplexer it is functional, wherein, its insertion loss ＜ 0.1dB, system inspection
The fields such as survey, light top and bottom path and wavelength division multiplexing communications network have extensive use.
It is pointed out that one skilled in the art specific embodiment of the present utility model is done it is any
Change the scope all without departing from claims of the present utility model.Correspondingly, the scope of claim of the present utility model
It is not limited only to previous embodiment.
Claims (4)
1. a kind of wavelength division multiplex device, it includes input optical fibre（100）And output optical fibre（200）, the input optical fibre（100）With
Output optical fibre（200）Central shaft respectively with optical axis（400）Coaxially,
It is characterized in that：The input optical fibre（100）Output end set grin lenses（130）, and and grin lenses（130）'s
Incidence end is connected, and the exit end of the grin lenses plates the filter membranous layer of selective transmission optical band（133）, the input light
It is fine（100）Glass tube I is placed in grin lenses（150）It is interior, the grin lenses（130）Light exit side expose glass tube I
（150）Port, in the glass tube I（150）Outer layer set in stainless steel tube I（170）；
The output optical fibre（200）Input set GRADIUM lens（230）, and with GRADIUM lens（230）It is connected, institute
State output optical fibre（200）With GRADIUM lens（230）It is placed in glass tube II（250）It is interior, the GRADIUM lens（230）'s
Light incident side exposes glass tube II（250）Port, in the glass tube II（250）Outer layer set in stainless steel tube II
（270）；
Also include sleeve pipe（310）, the interior stainless steel tube I（170）With interior stainless steel tube II（270）It is wrapped in sleeve pipe（310）It is interior.
2. wavelength division multiplex device according to claim 1, it is characterised in that：Described sleeve pipe（310）Central shaft and optical axis
（400）It is parallel.
3. wavelength division multiplex device according to claim 1, it is characterised in that：The filter membranous layer（133）Thickness be 0.1
Micron~10 microns.
4. wavelength division multiplex device according to claim 1, it is characterised in that：The filter membranous layer（133）Through frequency
Wave band is 25GHz, 50GHz, 100GHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250389.6U CN206248882U (en) | 2016-11-22 | 2016-11-22 | A kind of wavelength division multiplex device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250389.6U CN206248882U (en) | 2016-11-22 | 2016-11-22 | A kind of wavelength division multiplex device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206248882U true CN206248882U (en) | 2017-06-13 |
Family
ID=58999822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621250389.6U Expired - Fee Related CN206248882U (en) | 2016-11-22 | 2016-11-22 | A kind of wavelength division multiplex device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206248882U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108259864A (en) * | 2018-03-28 | 2018-07-06 | 周毅 | A kind of vision signal optical cable transmission system and the video camera with the Transmission system |
| CN110707514A (en) * | 2019-09-18 | 2020-01-17 | 珠海市杰威光电科技有限公司 | Module capable of replacing beam expanding optical fiber and preparation method thereof |
-
2016
- 2016-11-22 CN CN201621250389.6U patent/CN206248882U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108259864A (en) * | 2018-03-28 | 2018-07-06 | 周毅 | A kind of vision signal optical cable transmission system and the video camera with the Transmission system |
| CN110707514A (en) * | 2019-09-18 | 2020-01-17 | 珠海市杰威光电科技有限公司 | Module capable of replacing beam expanding optical fiber and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20181122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |