CN202693864U - Photoelectric receiving module - Google Patents
Photoelectric receiving module Download PDFInfo
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- CN202693864U CN202693864U CN201220203568XU CN201220203568U CN202693864U CN 202693864 U CN202693864 U CN 202693864U CN 201220203568X U CN201220203568X U CN 201220203568XU CN 201220203568 U CN201220203568 U CN 201220203568U CN 202693864 U CN202693864 U CN 202693864U
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- beam splitter
- splitter prism
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Abstract
The utility model relates to a photoelectric receiving module. The module comprises a polarizing beam splitting crystal, a half wave plate, at least one polarizing beam splitting prism and at least three photodiodes, wherein the polarizing beam splitting crystal and at least one polarizing beam splitting prism are linearly distributed along the incident direction of a laser beam; a photodiode is arranged on at least one side of each polarizing beam splitting prism; combinations of quarter wave plates and thin film filters, and focusing lenses are arranged between the photodiodes and the polarizing beam splitting prisms in sequence; the laser beam is divided into two beams in a cross-polarization state through the polarizing beam splitting crystal; one beam passes through the half wave plate and enters each polarizing beam splitting prism; and a beam which is emergent from each polarizing beam splitting prism continuously passes through the quarter wave plates and the thin film filters and is focused on the photodiodes through the focusing lenses. The module has wavelength division demultiplexing and photoelectric conversion receiving functions simultaneously, and multi-channel multi-wavelength photoelectric receiving can be realized.
Description
Technical field
The utility model relates to photoelectric field, particularly based on the photoelectric receiving arrangement of the integrated solution wavelength-division multiplex function of free space.
Background technology
Present division multiplex fibre-optic communication wave System Working Principle is as follows: at first utilize the photoemission module to change into the different wave length signal two or more electric signal at transmitting terminal, again by two or multifiber output, then utilize optical multiplexer that the different wave length signal is merged in the same optical fiber and transmit, utilize demodulation multiplexer that the light signal of various wavelength is separated to two or multifiber at receiving end; Utilize at last photoreceiver that each road signal is changed into respectively electric signal.
Wavelength-division multiplex optical fiber system's optical signal generation apparatus of the prior art and transmitting terminal divide and are arranged, and receiving end and electrooptical device also divide and be arranged, and cause the volume of whole device larger, are not suitable for the optical-electric module of miniaturization.
The utility model content
The purpose of this utility model is to overcome the deficiency that above-mentioned prior art exists, and provides a kind of photoelectricity receiver module structure of new version to can be used for the photoelectricity receiver module of miniaturization.Photoelectricity receiver module structure of the present utility model will have the function of separating wavelength-division multiplex and opto-electronic conversion reception simultaneously, and can realize hyperchannel multi-wavelength light electrical transmission and reception.
In order to reach the foregoing invention purpose, the technical scheme that the utility model provides is as follows:
A kind of photoelectricity receiver module structure, it is characterized in that, the structure of this module includes a polarization beam splitter prism and photodiode, at least one side is provided with quarter-wave plate and film filtering slice combination in the both lateral sides of described polarization beam splitter prism, the back of each described film filtering slice is equipped with the photodiode of accepting the respective wavelength laser beam, the laser beam of described film filtering slice transmission single wavelength, reflect the laser beam of its commplementary wave length, comprise multi-wavelength's laser beam from vertical side incident of polarization beam splitter prism, the laser beam of single wavelength is from vertical opposite side outgoing of polarization beam splitter prism.
In photoelectricity receiver module structure of the present utility model, as a kind of version, include at least one polarization beam splitter prism in this module, the both lateral sides of each polarization beam splitter prism is equipped with quarter-wave plate and film filtering slice combination.
In photoelectricity receiver module structure of the present utility model, as another kind of version, include at least two polarization beam splitter prisms in this module, a side is provided with quarter-wave plate and film filtering slice combination in the both lateral sides of each polarization beam splitter prism, and opposite side is provided with quarter-wave plate and completely reflecting mirror combination.
In photoelectricity receiver module structure of the present utility model, as a kind of outgoing form of laser beam, be incident in the photodiode through a film filtering slice from the single wavelength laser beam of vertical outgoing of last polarization beam splitter prism.
In photoelectricity receiver module structure of the present utility model, outgoing form as another kind of laser beam, in the end a polarization beam splitter prism vertically be placed with one 45 degree reflecting prism, turn to 90 degree to be incident to quarter-wave plate and film filtering slice from the single wavelength laser beam of vertical outgoing of last polarization beam splitter prism through described 45 degree reflecting prisms and be combined and be projected in the photodiode.
In photoelectricity receiver module structure of the present utility model, comprise that multi-wavelength's laser beam is through a polarization spectro crystal, the light beam that is divided into two orthogonal polarisation state through described polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism with the light beam that forms identical polarization state by described half-wave plate, is equipped with a condenser lens before each photodiode.
Further, be incident to the front multi-wavelength's of polarization spectro crystal laser beam first through a collimating apparatus.
In photoelectricity receiver module structure of the present utility model, the laser beam by described polarization spectro crystal is divided into a P attitude light beam and a S attitude light beam, and described half-wave plate is placed on the P attitude light beam.On described S attitude light beam, also be provided with a polarization mode dispersion and replenish device.
In photoelectricity receiver module structure of the present utility model, as three-channel a kind of specific implementation form, its structure includes a polarization spectro crystal, a half-wave plate, a polarization beam splitter prism and three photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, polarization beam splitter prism and a photodiode, two sides at polarization beam splitter prism respectively are placed with a photodiode, are provided with successively condenser lens being provided with between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, film filtering slice and quarter-wave plate; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state, and straight line emitting laser light beam process condenser lens is to photodiode in the described polarization beam splitter prism.
In photoelectricity receiver module structure of the present utility model, a kind of specific implementation form as four-way, its structure includes a polarization spectro crystal, a half-wave plate, two polarization beam splitter prisms and five photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, two polarization beam splitter prisms and a photodiode, two sides at each polarization beam splitter prism respectively are placed with a photodiode, are provided with successively condenser lens being provided with between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, film filtering slice and quarter-wave plate; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state, and straight line emitting laser light beam process condenser lens is to photodiode in the described polarization beam splitter prism.
In photoelectricity receiver module structure of the present utility model, a kind of specific implementation form as four-way, the structure of this module includes a polarization spectro crystal, a half-wave plate, four polarization beam splitter prisms and five photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, four polarization beam splitter prisms and a photodiode, a side at each polarization beam splitter prism respectively is placed with a photodiode, another side at each polarization beam splitter prism respectively is placed with a completely reflecting mirror, be provided with successively condenser lens between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, being provided with, film filtering slice and quarter-wave plate are being provided with a quarter-wave plate between the completely reflecting mirror of polarization beam splitter prism side and polarization beam splitter prism; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state, and straight line emitting laser light beam process condenser lens is to photodiode in the described polarization beam splitter prism.
In photoelectricity receiver module structure of the present utility model, a kind of specific implementation form as four-way, the structure of this module includes a polarization spectro crystal, a half-wave plate, one 45 degree reflecting prism, three polarization beam splitter prisms and four photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, three polarization beam splitter prisms and 45 degree reflecting prisms, a side at each polarization beam splitter prism respectively is placed with a photodiode, another side at each polarization beam splitter prism respectively is placed with a completely reflecting mirror, be provided with successively condenser lens between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, being provided with, film filtering slice and quarter-wave plate, between the completely reflecting mirror of polarization beam splitter prism side and polarization beam splitter prism, be respectively equipped with quarter-wave plate, in the described polarization beam splitter prism straight line emitting laser light beam through 45 degree reflecting prisms refractions after condenser lens to photodiode; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state.
Based on above-mentioned utility model content, photoelectricity receiver module structure of the present utility model compared with prior art has following technological merit:
Photoelectricity receiver module structure of the present utility model proposes a kind of technical scheme based on the free space beam transmission, take polarization spectro technology and film filtering slice and photodiode as the basis, realize the separation on the different wave length signal space, receive and change into electric signal by different photodiodes respectively.Compare with the mode of taking a plurality of WDM devices realization of optical fiber cascade demultiplexing, this utility model adopts Free Space Optics scheme, can realize the miniaturization of module.Because be subject to fiber reel around radius in the optical fiber concatenated schemes, module size is usually larger; Compare with traditional " Z " font Free Space Optics scheme, this utility model can incide on the WDM filter plate by 0 degree, thereby reduce on the one hand the requirement (wide-angle WDM optical filter more easily produces the relevant performance reduction of polarization) to the WDM optical filter, can help on the other hand to reduce by a larger margin module size.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 in the utility model photoelectricity receiver module structure.
Fig. 2 is the structural representation of embodiment 2 in the utility model photoelectricity receiver module structure.
Fig. 3 is the structural representation of embodiment 3 in the utility model photoelectricity receiver module structure.
Fig. 4 is the structural representation of embodiment 4 in the utility model photoelectricity receiver module structure.
Fig. 5 is that the polarization dispersion to light beam after the beam splitting compensates schematic diagram in the utility model photoelectricity receiver module structure.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples photoelectricity receiver module structure of the present utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Photoelectricity receiver module structure of the present utility model includes a polarization spectro crystal, half-wave plate, at least one polarization beam splitter prism and at least three photodiodes, laser beam is incident to the polarization spectro crystal through an incident collimating apparatus, along laser beam incident direction lineal layout polarization spectro crystal and at least one polarization beam splitter prism are arranged, at least one side at polarization beam splitter prism is placed with photodiode, is provided with successively condenser lens, film filtering slice and quarter-wave plate between photodiode and polarization beam splitter prism; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state, and straight line emitting laser light beam focuses on the photodiode through condenser lens in the described polarization beam splitter prism.
Embodiment 1
As shown in Figure 1, photoelectricity receiver module structure in the present embodiment structurally includes an incident light collimating apparatus 111, film filtering slice 133 and film filtering slice 137, photodiode 135, photodiode 139 and photodiode 142, polarization spectro crystal 121, polarization beam splitter prism 131, half-wave plate 122, quarter-wave plate 132, quarter-wave plate 136 also include condenser lens 134, condenser lens 138 and condenser lens 141.
The laser beam that laser instrument sends collimates through incident collimating apparatus 111 first and expands, and the light beam from the random polarization state of incident light collimating apparatus 111 inputs is divided into two bunch polarized lights through polarization spectro crystal 121 with light beam, is respectively P polarization state and S polarization state.Half-wave plate 122 is positioned on the light path of P polarization state light, and the P polarization state light changes into the S polarization state light through behind the half-wave plate 122.Two bundle S polarization state lights all incide on the reflection of polarization face 13 of polarization beam splitter prism 131, and two-beam transfers to a side outgoing of polarization beam splitter prism 131 after 90 degree reflections occur reflection of polarization face 13.Two-beam arrives film filtering slice 133 again by all becoming circularly polarized light after the quarter-wave plate 132, the effect of film filtering slice 133 and film filtering slice 137 is the light generation transmissions that make a certain wavelength coverage in the incident light, and the light of other wavelength coverages reflects.Wherein, the transmission peak wavelength of film filtering slice 133 is A wavelength, and the transmission peak wavelength of film filtering slice 137 is B wavelength.So the light beam generation transmission of A wavelength arrives condenser lens 134 in the two-beam, be incident to simultaneously photodiode 135 after two-beam converges through condenser lens 134 and change into electric signal.The light beam of other wavelength then reflects at film filtering slice 133, again by all becoming the P polarized light behind the quarter-wave plate 132.Like this, two bundle P polarized lights enter polarization beam splitter prism 131 and all incide on the reflection of polarization face 13, for the P polarized light, incide quarter-wave plate 136 after the light beam generation transmission, all become again circularly polarized light and incide film filtering slice 137 through quarter-wave plate 136, at this moment transmission arrival condenser lens 138 occurs at film filtering slice 137 in the light of the B wavelength in the two-beam, incides simultaneously on the photodiode 139 after light beam converges through condenser lens 138 and changes into electric signal.And the light of other wavelength reflects at film filtering slice 137, again by all becoming the S polarized light behind the quarter-wave plate 136; Two bundle S polarized lights again enter polarization beam splitter prism 131 and all incide on the reflection of polarization face 13, for the S polarized light, incide after light beam reflects on the condenser lens 141, incide simultaneously on the photodiode 142 after light beam converges through condenser lens 141 and change into electric signal.Like this, incide respectively photodiode 135, photodiode 139 and photodiode 142 from the light signal of A wavelength, B wavelength and other wavelength of 111 incidents of incident collimating apparatus, change into separately corresponding electric signal, thereby realize that the photosignal of separating wavelength-division multiplex transforms reception.
Embodiment 2
As shown in Figure 2, the present embodiment belongs to a four-way solution WDM structure.This photoelectricity receiver module structure is to have increased a polarization beam splitter prism on the basis of embodiment 1, on the input path of laser beam, just be distributed with point-blank successively like this an incident light collimating apparatus, a polarization spectro crystal and two polarization beam splitter prisms, two sides at each polarization beam splitter prism are respectively equipped with a quarter-wave plate and a film filtering slice, so just have four quarter-wave plates and four film filtering slices that see through different wave length.Just can place respectively the light beam that a condenser lens and photodiode receive respective wavelength at the back of each film filtering slice and convert electric signal to.
In like manner, can also increase more polarization beam splitter prism in light path, and the side in the polarization beam splitter prism both sides arranges respectively quarter-wave plate and sees through the film filtering slice of different wave length, just can extend to more passage, is used for the more wavelength-division multiplex of multi-wavelength port number.
Embodiment 3
As shown in Figure 3, the present embodiment is the structure variation of embodiment 2, is the photoconductive structure that can realize four-way solution wavelength-division multiplex equally.Specifically on the input path of laser beam, be distributed with point-blank successively an incident light collimating apparatus, a polarization spectro crystal and four polarization beam splitter prisms.And a side four polarization beam splitter prism both sides is provided with quarter-wave plate and film filtering slice, another side is provided with quarter-wave plate and completely reflecting mirror, be respectively equipped with like this a quarter-wave plate in the both sides of each polarization beam splitter prism, the rear portion of each quarter-wave plate is provided with the film filtering slice through different wave length, and the quarter-wave plate rear portion of a relative side is provided with completely reflecting mirror.The advantage of structural design is and all film filtering slices can be positioned over the same side like this, in the hope of saving the space of photoelectricity receiver module, is convenient to actual production, is conducive to Stability Analysis of Structures.
Embodiment 4
As shown in Figure 4, the present embodiment is further variation on embodiment 3 architecture basics, is the photoconductive structure that can realize four-way solution wavelength-division multiplex equally.That last polarization beam splitter prism is substituted with a completely reflecting mirror at concrete structure.On the input path of laser beam, be distributed with point-blank successively like this an incident light collimating apparatus, polarization spectro crystal, continuous three polarization beam splitter prisms and a completely reflecting mirror.A side three polarization beam splitter prism both sides is provided with quarter-wave plate and film filtering slice, another side is provided with quarter-wave plate and completely reflecting mirror, be respectively equipped with like this a quarter-wave plate in the both sides of each polarization beam splitter prism, the rear portion of a quarter-wave plate is provided with the film filtering slice through different wave length, and the quarter-wave plate rear portion of a relative side is provided with completely reflecting mirror.And be provided with four parts of wave plates and a film filtering slice in a side of completely reflecting mirror.Such structure can be converted to electric signal with inputing to after the wavelength-division of four kinds of different wave length bundle solutions equally in the photodiode.The meaning of this structure variation is can the corresponding polarization by reflection bundling device of afterbody passage, the combination of quarter-wave plate and completely reflecting mirror utilizes one 45 degree reflecting prism to substitute, thereby further saves the space and reduce production costs.
Be a kind of concise and to the point expression way in above-described embodiment 2,3 and 4 the accompanying drawing, but still have incident light collimating apparatus, polarization spectro crystal, half-wave plate, a plurality of polarization beam splitter prism, a plurality of quarter-wave plate and a plurality of film filtering slice in the light path.
In order to reach the perfect wavelength-division multiplex of resolving, require to contain the collocation structure that has polarization mode dispersion in this module, namely in such as the light path of Fig. 1, add an optical element, as shown in Figure 5.The purpose that adds optical element 151 among Fig. 5 is compensation PMD(polarization mode dispersion), two beamlets with the polarization state quadrature guaranteeing to separate on the space obtain identical physics light path in whole device light path, thereby form three road light beams and arrive simultaneously the photodiode 135 shown in Fig. 1, photodiode 139 and photodiode 142.
Undoubtedly, photoelectricity receiver module structure of the present utility model also has other similar structure numbers and form to substitute except structure and working method that above-described embodiment is enumerated.Generally speaking, protection domain of the present utility model also comprises other for those skilled in the art apparent conversion and alternative.
Claims (13)
1. photoelectricity receiver module structure, it is characterized in that, this modular structure includes a polarization beam splitter prism and a plurality of photodiode, at least one side is provided with quarter-wave plate and film filtering slice combination in the both lateral sides of described polarization beam splitter prism, the back of each described film filtering slice is equipped with the photodiode of accepting the respective wavelength laser beam, the laser beam of described film filtering slice transmission single wavelength, reflect the laser beam of its commplementary wave length, comprise multi-wavelength's laser beam from vertical side incident of polarization beam splitter prism, the laser beam of single wavelength is from vertical opposite side outgoing of polarization beam splitter prism.
2. a kind of photoelectricity receiver module structure according to claim 1 is characterized in that, includes at least one polarization beam splitter prism in this module, and the both lateral sides of each polarization beam splitter prism is equipped with quarter-wave plate and film filtering slice combination.
3. a kind of photoelectricity receiver module structure according to claim 1, it is characterized in that, include at least two polarization beam splitter prisms in this module, a side is provided with quarter-wave plate and film filtering slice combination in the both lateral sides of each polarization beam splitter prism, and opposite side is provided with quarter-wave plate and completely reflecting mirror combination.
4. according to claim 2 or 3 described a kind of photoelectricity receiver module structures, it is characterized in that, be incident in the photodiode through a film filtering slice from the single wavelength laser beam of vertical outgoing of last polarization beam splitter prism.
5. according to claim 2 or 3 described a kind of photoelectricity receiver module structures, it is characterized in that, in the end a polarization beam splitter prism vertically be placed with one 45 degree reflecting prism, turn to 90 degree to be incident to quarter-wave plate and film filtering slice from the single wavelength laser beam of vertical outgoing of last polarization beam splitter prism through described 45 degree reflecting prisms and be combined and be projected in the photodiode.
6. according to claim 2 or 3 described a kind of photoelectricity receiver module structures, it is characterized in that, comprise that multi-wavelength's laser beam is through a polarization spectro crystal, the light beam that is divided into two orthogonal polarisation state through described polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism with the light beam that forms identical polarization state by a half-wave plate, is equipped with a condenser lens before each photodiode.
7. a kind of photoelectricity receiver module structure according to claim 6 is characterized in that, is incident to the front multi-wavelength's of polarization spectro crystal laser beam first through a collimating apparatus.
8. a kind of photoelectricity receiver module structure according to claim 6 is characterized in that, the laser beam by described polarization spectro crystal is divided into a P attitude light beam and a S attitude light beam, and a half-wave plate is placed on the P attitude light beam.
9. a kind of photoelectricity receiver module structure according to claim 8 is characterized in that, also is provided with a polarization mode dispersion and replenishes device on described S attitude light beam.
10. a kind of photoelectricity receiver module structure according to claim 6, it is characterized in that, the structure of this module includes a polarization spectro crystal, a half-wave plate, a polarization beam splitter prism and three photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, polarization beam splitter prism and a photodiode, two sides at polarization beam splitter prism respectively are placed with a photodiode, are provided with successively condenser lens being provided with between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, film filtering slice and quarter-wave plate combination; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state, straight line emitting laser light beam is by described quarter-wave plate and film filtering slice combination in the described polarization beam splitter prism, to photodiode, straight line emitting laser light beam focuses on the photodiode through a condenser lens in the described polarization beam splitter prism through condenser lens.
11. a kind of photoelectricity receiver module structure according to claim 6, it is characterized in that, the structure of this module includes a polarization spectro crystal, a half-wave plate, two polarization beam splitter prisms and five photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, two polarization beam splitter prisms and a photodiode, two sides at each polarization beam splitter prism respectively are placed with a photodiode, are provided with successively condenser lens being provided with between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, film filtering slice and quarter-wave plate combination; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state, and straight line emitting laser light beam process condenser lens is to photodiode in the described polarization beam splitter prism.
12. a kind of photoelectricity receiver module structure according to claim 6, it is characterized in that, the structure of this module includes a polarization spectro crystal, a half-wave plate, four polarization beam splitter prisms and five photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, four polarization beam splitter prisms and a photodiode, a side at each polarization beam splitter prism respectively is placed with a photodiode, another side at each polarization beam splitter prism respectively is placed with a completely reflecting mirror, be provided with successively condenser lens between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, being provided with, the combination of film filtering slice and quarter-wave plate is being provided with a quarter-wave plate between the completely reflecting mirror of polarization beam splitter prism side and polarization beam splitter prism; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state, and straight line emitting laser light beam process condenser lens is to photodiode in the described polarization beam splitter prism.
13. a kind of photoelectricity receiver module structure according to claim 6, it is characterized in that, the structure of this module includes a polarization spectro crystal, a half-wave plate, one 45 degree reflecting prism, three polarization beam splitter prisms and four photodiodes, along lineal layout on the laser beam incident direction described polarization spectro crystal is arranged, three polarization beam splitter prisms and 45 degree reflecting prisms, a side at each polarization beam splitter prism respectively is placed with a photodiode, another side at each polarization beam splitter prism respectively is placed with a completely reflecting mirror, between the photodiode of polarization beam splitter prism side and polarization beam splitter prism, be provided with condenser lens, film filtering slice and quarter-wave plate combination, between the completely reflecting mirror of polarization beam splitter prism side and polarization beam splitter prism, be respectively equipped with quarter-wave plate, in the described polarization beam splitter prism straight line emitting laser light beam through the completely reflecting mirror refraction after condenser lens to photodiode; Described laser beam is divided into the light beam of two orthogonal polarisation state by the polarization spectro crystal, the light beam of one of them polarization state is incident in the polarization beam splitter prism by the light beam that described half-wave plate forms identical polarization state.
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| CN201220203568XU CN202693864U (en) | 2012-05-09 | 2012-05-09 | Photoelectric receiving module |
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| CN201220203568XU CN202693864U (en) | 2012-05-09 | 2012-05-09 | Photoelectric receiving module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681111A (en) * | 2012-05-09 | 2012-09-19 | 上海波汇通信科技有限公司 | Wavelength division demultiplexing photoelectric receiving module |
| CN105911804A (en) * | 2015-02-25 | 2016-08-31 | 全视技术有限公司 | Spatially-Interleaved Polarization Converter For LCOS Display |
| CN110087005A (en) * | 2019-04-23 | 2019-08-02 | Oppo广东移动通信有限公司 | A kind of Color Polarization formula CIS and image processing method, storage medium |
| CN111279236A (en) * | 2017-10-12 | 2020-06-12 | 卢克斯特拉有限公司 | Method and system for eliminating polarization dependence of 45 degree incident MUX/DEMUX design |
| CN115047637A (en) * | 2022-06-17 | 2022-09-13 | 中国科学院上海光学精密机械研究所 | Broadband beam-splitting crystal birefringence multi-wavelength space optical bridge |
-
2012
- 2012-05-09 CN CN201220203568XU patent/CN202693864U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681111A (en) * | 2012-05-09 | 2012-09-19 | 上海波汇通信科技有限公司 | Wavelength division demultiplexing photoelectric receiving module |
| CN105911804A (en) * | 2015-02-25 | 2016-08-31 | 全视技术有限公司 | Spatially-Interleaved Polarization Converter For LCOS Display |
| CN105911804B (en) * | 2015-02-25 | 2017-09-01 | 豪威科技股份有限公司 | Polarization converter for LCoS projection display device LCOS spatial intersecting |
| CN111279236A (en) * | 2017-10-12 | 2020-06-12 | 卢克斯特拉有限公司 | Method and system for eliminating polarization dependence of 45 degree incident MUX/DEMUX design |
| CN110087005A (en) * | 2019-04-23 | 2019-08-02 | Oppo广东移动通信有限公司 | A kind of Color Polarization formula CIS and image processing method, storage medium |
| CN115047637A (en) * | 2022-06-17 | 2022-09-13 | 中国科学院上海光学精密机械研究所 | Broadband beam-splitting crystal birefringence multi-wavelength space optical bridge |
| CN115047637B (en) * | 2022-06-17 | 2023-10-10 | 中国科学院上海光学精密机械研究所 | Broadband beam-splitting crystal birefringent multi-wavelength space optical bridge |
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