CN203849457U - Small-spacing optical odemux - Google Patents
Small-spacing optical odemux Download PDFInfo
- Publication number
- CN203849457U CN203849457U CN201420277582.3U CN201420277582U CN203849457U CN 203849457 U CN203849457 U CN 203849457U CN 201420277582 U CN201420277582 U CN 201420277582U CN 203849457 U CN203849457 U CN 203849457U
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- prism
- light beam
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- spacing
- pass filter
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- 230000003287 optical effect Effects 0.000 title claims abstract description 57
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 239000005304 optical glass Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a small-spacing optical odemux composed of a prism, a reflective film, an antireflection film, and more than two pass-band optical filters with different pass bands. The light beam incoming surface of the prism is in parallel with the light beam outgoing surface of the prism. The reflective film is disposed on the upper part of the light beam incoming surface of the prism. The antireflection film is disposed on the lower part the light beam incoming surface of the prism. The two pass-band optical filters with different pass bands are distributed on the light beam outgoing surface at intervals. The pass-band optical filters have thicknesses from 20 to 40 [mu]m and spacing from 200 to 300 [mu]m. Since the above structural style is used, an emitting signal can be decomposed into optical signals with small spacing. The small-spacing optical odemux has characteristics of small size, good performance, and low power consumption. Because the spacing is decreased, a prism with smaller size can be used and a lower incident angle can be used such that the size and the cost of the whole device can be reduced and a requirement of the optical filters is reduced.
Description
Technical field
The utility model relates to optical device, specifically
a kind ofoptical multiplexer.
Background technology
Along with the development in an all-round way of optical communication industry, the optical device market demand also constantly increases, and technology also improves constantly.Optical multiplexer and demodulation multiplexer are as requisite optical module in optical communication high speed high capacity transmission system, and its physical dimension and performance index are also updated.Optical multiplexer (Optical Odemux), combine by optical prism and different film filtering slices, by regulating light path system, the light signal that is several different wave lengths by the mixed light signal decomposition of input end, and be connected to corresponding receiving end reception signal.
In light communication system, optical multiplexer is as one of them assembly of optical module, the thickness of common CWDM optical filter is in 1.0mm left and right, when with 6～13 degree incident angle incident time, the thickness check rail of optical filter falls the useful area of a part of optical filter, and for ensureing the spacing of four bundle light, common way is or increases the size of filter to ensure effective clear field, conventional spacing is all more than 1mm at present, more than the about 750um of minimum spacing that can make of 1mm thickness optical filter.Therefore general optical multiplexer volume ratio is larger, input optical signal hot spot is larger, output also larger
of power consumption.
It is CN1504786A that State Intellectual Property Office discloses publication number on June 16th, 2004, patent name is the patent of invention of adjustable optics solution multiplexer, it comprises the multiple demultiplexing units that are formed in a slab guide, arbitrary demultiplexing unit all comprises multiple input waveguide passages, multiple output waveguide passages and a Bragg grating, output waveguide passage and input waveguide passage are coupled with different angles and this Bragg grating, and the symmetrical both sides that are positioned at Bragg grating normal, the cycle of the Bragg grating of this demultiplexing unit is different, and the light that the input waveguide passage receivability of a rear demultiplexing unit sends from last demultiplexing unit, the flashlight that input port sends inputs to an input waveguide passage of the first demultiplexing unit, multiple output ports are exported respectively the flashlight sending from an output waveguide passage of corresponding demultiplexing unit.
It is CN1246627A that State Intellectual Property Office discloses publication number on March 8th, 2000, patent name is the patent of invention for the scalable optical demultiple device of broadband dense wavelength division multiplexing system, it has realized greatly reducing and improved scalability of crosstalking, for supporting the high channel number of dense wave division multipurpose (DWDM) system.All input optical channels are assigned to single demodulation multiplexer module by this optical multiplexer device, and in this single demodulation multiplexer module, demultiplexing, compared with the optical channel of group, and filters single optical channel at this single demodulation multiplexer module place.All channels are divided into the demultiplexing optical channel of less demultiplexing group and rearmounted quantity of filtering a minimizing, can be to the contributive non-adjacent number of channel of total crosstalk levels thereby reduced.
The formation of above-mentioned patent and this patent and the problem solving are completely different.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, provides that a kind of volume is little, performance good, little spacing type optical multiplexer low in energy consumption.
For achieving the above object, the technical scheme that the utility model adopts is:
Little spacing type optical multiplexer, it is to be made up of the band pass filter of prism, reflectance coating, anti-reflection film and two above different passbands, the light beam of prism injects face and light beam outgoing plane is parallel to each other, the light beam that described reflectance coating is located at prism is injected the top of face, anti-reflection film is located at light beam injects the bottom of face, the band pass filter of described two above different passbands is distributed on light beam outgoing plane, the thickness of described band pass filter is 20um～40um, and the spacing between band pass filter is 200um～300um.
The thickness of described band pass filter is 30um, and the spacing between band pass filter is 250um.
Described reflectance coating and anti-reflection film are coated on the light beam of prism and inject on face.
Described band pass filter passes through UV glue on the light beam outgoing plane of block prism.
The thickness of described UV glue is 2um～3um.
The material of described prism adopts optical glass.
The beneficial effects of the utility model: owing to adopting above-mentioned version, can resolve into by transmitting the light signal that spacing is very little, little spacing optical multiplexer has that volume is little, performance good, feature low in energy consumption; Due to reducing of spacing, can use the prism of smaller szie, less incident angle be can use, thereby size and the cost of whole device reduced, reduce the requirement of optical filter, make product have more competitive power.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
In figure: 1, prism; 2, reflectance coating; 3, anti-reflection film; 4, band pass filter; 5, light beam is injected face; 6, light beam outgoing plane.
Embodiment
As shown in Figure 1, little spacing type optical multiplexer, it is to be made up of the band pass filter 4 of prism 1, reflectance coating 2, anti-reflection film 3 and four different passbands, the material of described prism 1 adopts optical glass.The light beam of prism 1 is injected face 5 and is parallel to each other with light beam outgoing plane 6, the light beam that described reflectance coating 2 is located at prism 1 is injected the top of face 5, anti-reflection film 3 is located at light beam injects the bottom of face 5, the band pass filter 4 of described four different passbands is distributed on light beam outgoing plane, the thickness of described band pass filter is 30um, and the spacing between band pass filter is 250um.
Described reflectance coating 2 and anti-reflection film plating 3 are injected on face 5 built in the light beam of prism.Described band pass filter passes through UV glue on the light beam outgoing plane of block prism.The thickness of described UV glue is 2um～3um.
Principle of work: ODEMUX in use, plated the optical wavelength of 4 kinds of signals of region incident of anti-reflection film by glass prism, signal reflects and reflects in glass prism, and four optical filters are followed successively by λ 1 optical filter, λ 2 optical filters, λ 3 optical filters, λ 4 optical filters from top to bottom.On λ 4 optical filters, allow λ 4 signals to go out by transmission, other three wavelength return in prism 1, on λ 3 optical filters, allow λ 3 light signal transmissions to go out, other two wavelength return in glass prism, on λ 2 optical filters, allow λ 2 light signal transmissions to go out, remain a wavelength and return in glass prism, on λ 1 optical filter, allow λ 1 light signal transmission to go out.Other wavelength cut-off.Four restraint the outgoing of parallel lights, are positioned at same one side of glass prism.When use, four bundle light are converged on 4 PD.Incident beam is incident on glass prism with certain angle, and four bundle parallel beams are with identical angle outgoing.Adopt after the optical filter of 30um thickness, thickness almost can be ignored the impact of optical filter useful area, and the size of beam separation can be accomplished the spacing of 250um, suitable with integrated optics port sizes.Simultaneously, due to the reducing of spacing, can use the glass prism of smaller szie, can use less incident angle, thereby the size of whole device be less, and the requirement of optical filter is also reduced, holistic cost declines, and is that field frequency has more competitive power.
The above is preferred implementation of the present utility model; certainly can not limit with this interest field of the utility model; should be understood that; for those skilled in the art; the technical solution of the utility model is modified or is equal to replacement, do not depart from the protection domain of technical solutions of the utility model.
Claims (7)
1. one kind little spacing type optical multiplexer, it is characterized in that: it is to be made up of the band pass filter of prism, reflectance coating, anti-reflection film and two above different passbands, the light beam of prism injects face and light beam outgoing plane is parallel to each other, the light beam that described reflectance coating is located at prism is injected the top of face, anti-reflection film is located at light beam injects the bottom of face, the band pass filter of described two above different passbands is distributed on light beam outgoing plane, the thickness of described band pass filter is 20um～40um, and the spacing between band pass filter is 200um～300um.
2. little spacing type optical multiplexer according to claim 1, is characterized in that: the thickness of described band pass filter is 30um, and the spacing between band pass filter is 250um.
3. little spacing type optical multiplexer according to claim 1, is characterized in that: described reflectance coating and anti-reflection film are coated on the light beam of prism and inject on face.
4. little spacing type optical multiplexer according to claim 1, is characterized in that: described band pass filter passes through UV glue on the light beam outgoing plane of block prism.
5. little spacing type optical multiplexer according to claim 4, is characterized in that: the thickness of described UV glue is 2um～3um.
6. according to the little spacing type optical multiplexer described in claim 1 to 5 any one, it is characterized in that: the band pass filter of described different passbands is provided with 4.
7. little spacing type optical multiplexer according to claim 6, is characterized in that: the material of described prism adopts optical glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277582.3U CN203849457U (en) | 2014-05-28 | 2014-05-28 | Small-spacing optical odemux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420277582.3U CN203849457U (en) | 2014-05-28 | 2014-05-28 | Small-spacing optical odemux |
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| Publication Number | Publication Date |
|---|---|
| CN203849457U true CN203849457U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420277582.3U Expired - Lifetime CN203849457U (en) | 2014-05-28 | 2014-05-28 | Small-spacing optical odemux |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678515A (en) * | 2015-02-11 | 2015-06-03 | 武汉锐奥特科技有限公司 | Optical path structure of optical device for single-fiber bidirectional transmission |
| CN104880774A (en) * | 2015-05-26 | 2015-09-02 | 苏州旭创科技有限公司 | Wavelength division multiplexing demultiplexing device and optical module |
| CN105158853A (en) * | 2015-10-16 | 2015-12-16 | 北极光电(深圳)有限公司 | Novel integrated micro-optical wavelength division multiplexing module, and method of multiplexing and demultiplexing by employing module |
| CN105739025A (en) * | 2016-03-18 | 2016-07-06 | 苏州伽蓝致远电子科技股份有限公司 | Three-dimensional compact multichannel light wavelength division multiplexer with one light emergent end |
| CN110412688A (en) * | 2018-04-28 | 2019-11-05 | 福州高意光学有限公司 | A kind of WDM modular structure |
| CN111263906A (en) * | 2017-10-12 | 2020-06-09 | 卢克斯特拉有限公司 | Method and system for near normal incidence MUX/DEMUX design |
-
2014
- 2014-05-28 CN CN201420277582.3U patent/CN203849457U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678515A (en) * | 2015-02-11 | 2015-06-03 | 武汉锐奥特科技有限公司 | Optical path structure of optical device for single-fiber bidirectional transmission |
| CN104678515B (en) * | 2015-02-11 | 2016-03-02 | 武汉锐奥特科技有限公司 | For the optical device light channel structure of single fiber bi-directional |
| CN104880774A (en) * | 2015-05-26 | 2015-09-02 | 苏州旭创科技有限公司 | Wavelength division multiplexing demultiplexing device and optical module |
| CN105158853A (en) * | 2015-10-16 | 2015-12-16 | 北极光电(深圳)有限公司 | Novel integrated micro-optical wavelength division multiplexing module, and method of multiplexing and demultiplexing by employing module |
| CN105158853B (en) * | 2015-10-16 | 2018-08-24 | 北极光电(深圳)有限公司 | A kind of novel integrated micro-optical Interleave muiltiplexing component element and the partial wave using the component, multiplex method |
| CN105739025A (en) * | 2016-03-18 | 2016-07-06 | 苏州伽蓝致远电子科技股份有限公司 | Three-dimensional compact multichannel light wavelength division multiplexer with one light emergent end |
| CN111263906A (en) * | 2017-10-12 | 2020-06-09 | 卢克斯特拉有限公司 | Method and system for near normal incidence MUX/DEMUX design |
| CN110412688A (en) * | 2018-04-28 | 2019-11-05 | 福州高意光学有限公司 | A kind of WDM modular structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140924 |