CN201936033U - Wavelength division multiplexer based on positioning groove for positioning spherical lens optical fibers - Google Patents
Wavelength division multiplexer based on positioning groove for positioning spherical lens optical fibers Download PDFInfo
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- CN201936033U CN201936033U CN2010202418616U CN201020241861U CN201936033U CN 201936033 U CN201936033 U CN 201936033U CN 2010202418616 U CN2010202418616 U CN 2010202418616U CN 201020241861 U CN201020241861 U CN 201020241861U CN 201936033 U CN201936033 U CN 201936033U
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- spherical lens
- optical fiber
- orientation groove
- fiber orientation
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Abstract
The utility model provides a wavelength division multiplexer based on a positioning groove for positioning spherical lens optical fibers. The wavelength division multiplexer is provided with a substrate and an optical filter, wherein a first optical fiber positioning groove and a second optical fiber positioning groove are arranged at one side of the substrate; a third optical fiber positioning groove is arranged at the other side of the substrate; the first optical fiber positioning groove, the second optical fiber positioning groove and the third optical fiber positioning groove are respectively used for positioning a first spherical lens optical fiber, a second spherical lens optical fiber and a third spherical lens optical fiber. By adopting the technical scheme of the utility model, spherical lenses are formed by processing on the optical fibers without adjustment and calibration between a single lens and the optical fibers, so that the wavelength division multiplexer has a simple structure and is convenient to produce; and in addition, signal light with different wavelengths, which is input to the optical fibers, can be separated and light with different signal wavelengths can be also loaded to the same optical fiber.
Description
Technical field
The utility model relates to the wavelength division multiplexer based on locating slot location sphere lens fiber.
Background technology
Wavelength-division multiplex (WDM) technology is exactly in order to make full use of the enormous bandwidth resource that single-mode fiber low-loss district brings, wavelength difference according to each channel light wave can be divided into some channels with the low-loss zoning of optical fiber, the signal carrier wave of light wave, adopt wavelength division multiplexer (wave multiplexer) that the flashlight carrier wave of different provision wavelengths is merged at transmitting terminal and send into an optical fiber and transmit.At receiving end, the multiplex mode that the light carrier of these different wave lengths carrying unlike signals is separated by a wavelength-division multiplex (channel-splitting filter) again.Because it is separate that the optical carrier of different wave length can be regarded as, thereby in an optical fiber, can realize the multiplexing transmission of multipath light signal, the signal of both direction is arranged in the different wave length transmission respectively can realize transmitted in both directions.The dilatation and the digital transmission system that are used for CATV system and other optical-fiber network.
The optical fiber lens of existing WDM adopts bigbore collimating apparatus usually, makes that the size of product is bigger, and aims at debugging in addition, complex structure.
Summary of the invention
Technical problem to be solved in the utility model provides the wavelength division multiplexer based on locating slot location sphere lens fiber, and it is simple in structure, and is easy to make, is applicable to batch process.For this reason, the utility model by the following technical solutions: it is provided with substrate and optical filter;
Described substrate one side is provided with the first fiber orientation groove and the second fiber orientation groove, described substrate opposite side is provided with the 3rd fiber orientation groove, in this side that the first fiber orientation groove and the second fiber orientation groove are set be provided with between this side of the 3rd fiber orientation groove described optical filter is set; The first fiber orientation groove, the second fiber orientation groove and the 3rd fiber orientation groove are located the first spherical lens optical fiber, the second spherical lens optical fiber and the 3rd spherical lens optical fiber respectively;
Described optical filter simultaneously is provided with reflectance coating and transmission film towards this of the first fiber orientation groove and the second fiber orientation groove, and described transmission film is for the light transmission of first optical communicating waveband, and reflectance coating is for the light reflection of second optical communicating waveband;
The first fiber orientation groove, the second fiber orientation groove and the 3rd fiber orientation groove have following relation: make the first spherical lens optical fiber can receive the light from the ejaculation of the second spherical lens optical fiber that reflects through described optical filter, the second spherical lens optical fiber can receive the light from the ejaculation of the first spherical lens optical fiber through described optical filter reflection; The 3rd spherical lens optical fiber can receive the light from the ejaculation of the first spherical lens optical fiber through described optical filter transmission, and the first spherical lens optical fiber can receive the light from the ejaculation of the 3rd spherical lens optical fiber through described optical filter transmission.
Because adopt the technical solution of the utility model, globe lens directly processes on optical fiber, saved single lens and the adjusting between the optical fiber in the past and aimed at, make simple in structure, easy to make; And can realize the flashlight of the different wave length that is input to optical fiber separately also can being loaded into the light of unlike signal wavelength in the same optical fiber.
Description of drawings
Fig. 1 is the front view of embodiment provided by the utility model.
Fig. 2 is the vertical view of embodiment provided by the utility model.
Fig. 3 is a light path synoptic diagram of the present utility model.
Fig. 4 is the enlarged diagram of A portion among Fig. 3.
Fig. 5 is a spherical lens optical fiber synoptic diagram provided by the utility model.
Fig. 6 is a filter plate synoptic diagram provided by the utility model.
Fig. 7 is a substrate synoptic diagram provided by the utility model.
Fig. 8 is the vertical view of substrate provided by the utility model.
Embodiment
With reference to accompanying drawing.It is provided with substrate 4 and optical filter 3, and the material of substrate 4 can be a metal or nonmetal.
Described substrate 4 one sides are provided with the first fiber orientation groove 42 and the second fiber orientation groove 43, described substrate opposite side is provided with the 3rd fiber orientation groove 44, in the present embodiment, the xsect of described locating slot is V-shaped, the xsect of locating slot also can take the shape of the letter U etc., in this side that the first fiber orientation groove 42 and the second fiber orientation groove 43 are set be provided with between this side of the 3rd fiber orientation groove 44 described optical filter 3 is set; Present embodiment provides the first spherical lens optical fiber 142, the second spherical lens optical fiber 143 and the 3rd spherical lens optical fiber 144, the first fiber orientation groove, 42 location, the first spherical lens optical fiber 142, the second spherical lens optical fiber, 143, the three fiber orientation grooves, 44 location, the second fiber orientation groove, 43 location the 3rd spherical lens optical fiber 144.
Described optical filter 3 is provided with reflectance coating and transmission film towards this one side 31 of the first fiber orientation groove and the second fiber orientation groove, and described transmission film is for the light transmission of first optical communicating waveband, and reflectance coating is for the light reflection of second optical communicating waveband.
The first fiber orientation groove 42, the second fiber orientation groove 43 and the 3rd fiber orientation groove 44 have following relation: make the first spherical lens optical fiber 142 can receive the light from 143 ejaculations of the second spherical lens optical fiber that reflects through described optical filter, the second spherical lens optical fiber 143 can receive the light from 142 ejaculations of the first spherical lens optical fiber through described optical filter reflection; The 3rd spherical lens optical fiber 144 can receive the light from 142 ejaculations of the first spherical lens optical fiber through described optical filter transmission, and the first spherical lens optical fiber 142 can receive the light from 144 ejaculations of the 3rd spherical lens optical fiber through described optical filter transmission.With regard to present embodiment, the first spherical lens optical fiber 142 is as wavelength division multiplexer incident lens fiber, the second spherical lens optical fiber 143 is as the mirror lens optical fiber of wavelength division multiplexer, and the 3rd spherical lens optical fiber 144 is as the transmission lens optical fiber as wavelength division multiplexer.The first fiber orientation groove 42 is parallel with the 3rd fiber orientation groove 44, but certain side-play amount L is arranged, and the thickness of side-play amount L and filter plate 3 has relation, if the refractive index n of optical filter=1.51, the angle of incident light is 13 degree, and the thickness of filter plate is d, and can get side-play amount by calculating is L=0.079d.
With the first spherical lens optical fiber 142 is example, described spherical lens optical fiber is made of one section multimode optical fiber of welding on the single-mode fiber 1 or pure silica fibre 2, and form the spherical lens 21 that fused optic fiber forms in this termination portion that is in multimode optical fiber or pure silica fibre, R is the radius of spherical lens 21.The structure of the second spherical lens optical fiber 143 and the 3rd spherical lens optical fiber 144 is identical with the first spherical lens optical fiber 142.
Wavelength division multiplexer also comprises 2 cover plates 5, and the material of cover plate 5 can be a metal or nonmetal, cover plate 5 be arranged at substrate and spherical lens optical fiber above be used for pressing described spherical lens optical fiber on substrate 4, be connected and fixed with cementing agent 6 between cover plate 5 and the substrate 4.
Described substrate 4 is in this side that the first fiber orientation groove and the second fiber orientation groove are set and be provided with and be provided with the recessed district 45 of placing described spherical lens 21 between this side of the 3rd fiber orientation groove.Described substrate is provided with the mounting groove 41 of filter plate in the centre in recessed district, filter plate is installed on the mounting groove, fixedlys connected with substrate 4 with cementing agent 6.
The wavelength of described first optical communicating waveband is 1460nm-1620nm, and the wavelength of described first optical communicating waveband is 1260nm-1360nm.
Above-mentioned concrete step is all only given an example for convenience of description, is not the restriction to the utility model scope.For the general personnel in present technique field, can under situation that does not break away from the utility model spirit and scope, make many variations.Therefore, all technical schemes that are equal to also belong to protection domain of the present utility model.
Claims (7)
1. based on the wavelength division multiplexer of locating slot location sphere lens fiber, it is characterized in that it is provided with substrate and optical filter;
Described substrate one side is provided with the first fiber orientation groove and the second fiber orientation groove, described substrate opposite side is provided with the 3rd fiber orientation groove, in this side that the first fiber orientation groove and the second fiber orientation groove are set be provided with between this side of the 3rd fiber orientation groove described optical filter is set; The first fiber orientation groove, the second fiber orientation groove and the 3rd fiber orientation groove are located the first spherical lens optical fiber, the second spherical lens optical fiber and the 3rd spherical lens optical fiber respectively;
Described optical filter simultaneously is provided with reflectance coating and transmission film towards this of the first fiber orientation groove and the second fiber orientation groove, and described transmission film is for the light transmission of first optical communicating waveband, and reflectance coating is for the light reflection of second optical communicating waveband;
The first fiber orientation groove, the second fiber orientation groove and the 3rd fiber orientation groove have following relation: make the first spherical lens optical fiber can receive the light from the ejaculation of the second spherical lens optical fiber that reflects through described optical filter, the second spherical lens optical fiber can receive the light from the ejaculation of the first spherical lens optical fiber through described optical filter reflection; The 3rd spherical lens optical fiber can receive the light from the ejaculation of the first spherical lens optical fiber through described optical filter transmission, and the first spherical lens optical fiber can receive the light from the ejaculation of the 3rd spherical lens optical fiber through described optical filter transmission.
2. the wavelength division multiplexer based on locating slot location sphere lens fiber as claimed in claim 1, the material that it is characterized in that described substrate can be a metal or nonmetal.
3. the wavelength division multiplexer based on locating slot location sphere lens fiber as claimed in claim 1, it is characterized in that described spherical lens optical fiber is made of one section multimode optical fiber of welding on the single-mode fiber or pure silica fibre, and form the spherical lens that fused optic fiber forms in this termination portion that is in multimode optical fiber or pure silica fibre.
4. the wavelength division multiplexer based on locating slot location sphere lens fiber as claimed in claim 1, it is characterized in that it also is provided with cover plate, cover plate be arranged at substrate and spherical lens optical fiber above, between cover plate and the substrate cementing agent is arranged, the material of cover plate can be a metal or nonmetal.
5. the wavelength division multiplexer based on locating slot location sphere lens fiber as claimed in claim 1 is characterized in that described substrate is in this side that the first fiber orientation groove and the second fiber orientation groove are set be provided with and be provided with the recessed district of placing described spherical lens between this side of the 3rd fiber orientation groove.
6. the wavelength division multiplexer based on locating slot location sphere lens fiber as claimed in claim 5 is characterized in that described substrate is provided with the mounting groove of filter plate in the centre in recessed district, and filter plate is installed on the mounting groove.
7. the wavelength division multiplexer based on locating slot location sphere lens fiber as claimed in claim 1, the wavelength that it is characterized in that described first optical communicating waveband is 1460nm-1620nm, the wavelength of described first optical communicating waveband is 1260nm-1360nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202418616U CN201936033U (en) | 2010-06-28 | 2010-06-28 | Wavelength division multiplexer based on positioning groove for positioning spherical lens optical fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202418616U CN201936033U (en) | 2010-06-28 | 2010-06-28 | Wavelength division multiplexer based on positioning groove for positioning spherical lens optical fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201936033U true CN201936033U (en) | 2011-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202418616U Expired - Fee Related CN201936033U (en) | 2010-06-28 | 2010-06-28 | Wavelength division multiplexer based on positioning groove for positioning spherical lens optical fibers |
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| Country | Link |
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| CN (1) | CN201936033U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018010675A1 (en) * | 2016-07-13 | 2018-01-18 | Huawei Technologies Co., Ltd. | Wavelength division multiplexer/demultiplexer with flexibility of optical adjustment |
| CN110275251A (en) * | 2019-07-19 | 2019-09-24 | 珠海艾文科技有限公司 | Wavelength division multiplexer |
| CN110376681A (en) * | 2019-07-19 | 2019-10-25 | 珠海艾文科技有限公司 | Reflection end wavelength division multiplexer |
-
2010
- 2010-06-28 CN CN2010202418616U patent/CN201936033U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018010675A1 (en) * | 2016-07-13 | 2018-01-18 | Huawei Technologies Co., Ltd. | Wavelength division multiplexer/demultiplexer with flexibility of optical adjustment |
| CN108885311A (en) * | 2016-07-13 | 2018-11-23 | 华为技术有限公司 | Wavelength-division multiplexer/demultiplexer with optics flexible adjustment |
| CN110275251A (en) * | 2019-07-19 | 2019-09-24 | 珠海艾文科技有限公司 | Wavelength division multiplexer |
| CN110376681A (en) * | 2019-07-19 | 2019-10-25 | 珠海艾文科技有限公司 | Reflection end wavelength division multiplexer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20130628 |