CN2506033Y - Film interference filter type wavelength division multiplexing device - Google Patents
Film interference filter type wavelength division multiplexing device Download PDFInfo
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- CN2506033Y CN2506033Y CN01263441U CN01263441U CN2506033Y CN 2506033 Y CN2506033 Y CN 2506033Y CN 01263441 U CN01263441 U CN 01263441U CN 01263441 U CN01263441 U CN 01263441U CN 2506033 Y CN2506033 Y CN 2506033Y
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- interference filter
- lens
- film interference
- wavelength division
- light
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- 239000013307 optical fiber Substances 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a film interference filter type wavelength division multiplexing device, including two optical fiber heads, C lens and anchor clamps, film interference filter and single optical collimator. The utility model discloses a light signal by the outgoing of an optic fibre of two optical fiber heads is expanded through the collimation of C lens, incides on the high reverse side of film interference filter, and partly light sees through film interference filter, receives and couples to the optic fibre the inside through single optical collimator, and all the other light is reflected by film interference filter, in coupling to another optic fibre of two optical fiber heads through C lens to reach the purpose of dividing ripples or close ripples. Thus, the utility model discloses use C lens to replace self-focusing lens collimation and received signal light, the structure is compacter, the performance is better, and the material source is extensive moreover, easily realizes, has the wide application in fields such as system monitoring, light upper and lower way and wavelength division multiplexing communication network.
Description
Technical field
The utility model relates to a kind of wavelength division multiplex device, refers in particular to the film interference filter plate type wavelength division multiplex device in fields such as being used for system monitoring, light top and bottom path and wavelength division multiplexing communications network.
Background technology
In the prior art, wavelength division multiplex device is a kind of partial wave (or closing ripple) device, and it can separate the lightwave signal in light source, optical fiber, integrated circuit or other fiber waveguides or be coupled selectively.According to operation principle and material therefor, wavelength division multiplex device mainly contains film interference type, planar waveguide-type (AWG), grating type optical fiber, fiber fuse cascading Mach-Zehnder interferometer type and diffraction grating type etc.Wherein, general film interference type wavelength division multiplex device adopts the GRIN Lens end face to paste the mode of filter plate as shown in Figure 1, and its drawback is the shortage of the GRIN Lens source of goods, makes product price more expensive, is difficult in the advantage that occupies in the intense market competition.
Summary of the invention
The film interference filter plate type wavelength division multiplex device that the purpose of this utility model provides a kind of compact conformation, is easy to realize.
The utility model purpose is achieved in that
A kind of film interference filter plate type wavelength division multiplex device comprises double optical fiber head, C lens and anchor clamps thereof, film interference filter plate and single fiber collimater.
Wherein, the length of C lens holder equals the C length of lens and adds the distance of its rear focus to end face.
Be coated with one deck anti-reflection film on the C lens, this anti-reflection film plays collimation and reflection optical coupler is incorporated into optical fiber in light path.
Like this, the utility model is used the C lens and is substituted GRIN Lens collimation and received signal light, more compact structure, performance are better, and material source is extensive, be easy to realize, be the elementary cell that constitutes multiplexer, demultiplexer, light top and bottom path multiplexer etc., have extensive use in fields such as system monitoring, light top and bottom path and wavelength division multiplexing communications networks.
Description of drawings
Fig. 1 is the light path principle figure of self-focusing lens type wavelength division multiplexer;
Fig. 2 is the utility model structure installation diagram;
Fig. 3 is a light path principle figure of the present utility model.
Among the figure: the 1----double optical fiber head, the 2----C lens, the 3----C lens holder,
4----film interference filter plate, 5----single fiber collimater,
6----glue, 7----optical fiber head anchor clamps, 8----outer package.
Specific embodiment
As shown in Figure 2, the utility model comprises double optical fiber head 1, C lens 2, C lens holder 3, film interference filter plate 4 and single fiber collimater 5.
Wherein, C lens 2 have collimated light beam with C lens holder 3, are connected the effect of double optical fiber head 1 and sticking film interference filter element 4.
The length of C lens holder 3 is by the length of C lens 2 and radius of curvature decision, and the length L and the radius of curvature R that are used for doing the C lens 2 of collimater in principle have following relation:
L＜(n/(n-1))×R
N is the refractive index of C lens 2 in the formula, but the length of C lens 2 is subjected to the restriction (deciding on specific requirement) of outgoing spot size and pointing accuracy again, can not be too little; And the rear focus that requires C lens 2 just drops on the end face of C lens holder 3, and promptly the length of C lens holder 3 should equal C lens 2 length and adds the distance of its rear focus to end face.
Be coated with one deck anti-reflection film on the C lens 2, the concrete wavelength of this anti-reflection film is determined by the logical optical wavelength of device.In light path, play collimation and reflection optical coupler is incorporated into optical fiber.
And above concrete structure is based on geometric optics correlation computations formula, when film interference filter plate 4 is attached on C lens holder 3 end faces, just make can be coupled to after reflection in the other optical fiber from the light of an optical fiber outgoing of double optical fiber head 1 and go, transmitted light then arrives and receives the optical fiber the inside.
Concrete operation principle of the present utility model as shown in Figure 3, be such: by the light signal of an optical fiber outgoing of double optical fiber head 1 through C lens 2 collimator and extenders, incide on the high reverse side of film interference filter plate 4, part light (light of transmission peak wavelength) can see through film interference filter plate 4, receive and be coupled to the optical fiber the inside through single fiber collimater 5, remaining light is by 4 reflections of film interference filter plate, be coupled in the double optical fiber head 1 other optical fiber through C lens 2, thereby reach the purpose of partial wave, otherwise then can close ripple.
Claims (3)
1, a kind of film interference filter plate type wavelength division multiplex device is characterized in that: comprise double optical fiber head, C lens and anchor clamps thereof, film interference filter plate and single fiber collimater.
2, a kind of film interference filter plate type wavelength division multiplex device as claimed in claim 1, it is characterized in that: the length of C lens holder equals the C length of lens and adds the distance of its rear focus to end face.
3, a kind of film interference filter plate type wavelength division multiplex device as claimed in claim 1 is characterized in that: be coated with one deck anti-reflection film on the C lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01263441U CN2506033Y (en) | 2001-10-24 | 2001-10-24 | Film interference filter type wavelength division multiplexing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01263441U CN2506033Y (en) | 2001-10-24 | 2001-10-24 | Film interference filter type wavelength division multiplexing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506033Y true CN2506033Y (en) | 2002-08-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01263441U Expired - Fee Related CN2506033Y (en) | 2001-10-24 | 2001-10-24 | Film interference filter type wavelength division multiplexing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2506033Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323304C (en) * | 2003-01-17 | 2007-06-27 | 中国科学院长春光学精密机械与物理研究所 | Multi mould multi-optical fiber power coupler and its preparation method |
| CN102045111A (en) * | 2010-10-28 | 2011-05-04 | 苏州旭创科技有限公司 | Wavelength division multiplexing and demultiplexing optical element for confocal fabry-perot (CFP)-LR4 |
| CN102621642A (en) * | 2011-02-01 | 2012-08-01 | 深圳新飞通光电子技术有限公司 | Optical transceiver for wavelength division multiplexing |
| CN104730646A (en) * | 2015-04-17 | 2015-06-24 | 黄石晨信光电有限责任公司 | Focusing-type optical wavelength division multiplexer |
| CN105607189A (en) * | 2016-01-19 | 2016-05-25 | 雷和清 | Frequency modulation method for optical filter |
| CN108873159A (en) * | 2018-06-19 | 2018-11-23 | 武汉电信器件有限公司 | A kind of integrated device for EDFA Erbium-Doped Fiber Amplifier |
| CN111381324A (en) * | 2020-04-24 | 2020-07-07 | 苏州伽蓝致远电子科技股份有限公司 | Compact wavelength division device with low-loss upgrading port |
-
2001
- 2001-10-24 CN CN01263441U patent/CN2506033Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323304C (en) * | 2003-01-17 | 2007-06-27 | 中国科学院长春光学精密机械与物理研究所 | Multi mould multi-optical fiber power coupler and its preparation method |
| CN102045111A (en) * | 2010-10-28 | 2011-05-04 | 苏州旭创科技有限公司 | Wavelength division multiplexing and demultiplexing optical element for confocal fabry-perot (CFP)-LR4 |
| CN102621642A (en) * | 2011-02-01 | 2012-08-01 | 深圳新飞通光电子技术有限公司 | Optical transceiver for wavelength division multiplexing |
| CN104730646A (en) * | 2015-04-17 | 2015-06-24 | 黄石晨信光电有限责任公司 | Focusing-type optical wavelength division multiplexer |
| CN104730646B (en) * | 2015-04-17 | 2018-01-12 | 黄石晨信光电有限责任公司 | A kind of focusing light wavelength division multiplexing |
| CN105607189A (en) * | 2016-01-19 | 2016-05-25 | 雷和清 | Frequency modulation method for optical filter |
| CN108873159A (en) * | 2018-06-19 | 2018-11-23 | 武汉电信器件有限公司 | A kind of integrated device for EDFA Erbium-Doped Fiber Amplifier |
| CN108873159B (en) * | 2018-06-19 | 2021-01-01 | 武汉电信器件有限公司 | Integrated device for erbium-doped fiber amplifier |
| CN111381324A (en) * | 2020-04-24 | 2020-07-07 | 苏州伽蓝致远电子科技股份有限公司 | Compact wavelength division device with low-loss upgrading port |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |