WO2021047159A1 - Optical wavelength-division multiplexer - Google Patents

Optical wavelength-division multiplexer Download PDF

Info

Publication number
WO2021047159A1
WO2021047159A1 PCT/CN2020/079756 CN2020079756W WO2021047159A1 WO 2021047159 A1 WO2021047159 A1 WO 2021047159A1 CN 2020079756 W CN2020079756 W CN 2020079756W WO 2021047159 A1 WO2021047159 A1 WO 2021047159A1
Authority
WO
WIPO (PCT)
Prior art keywords
polarization beam
combining structure
wave plate
polarization
beam combining
Prior art date
Application number
PCT/CN2020/079756
Other languages
French (fr)
Chinese (zh)
Inventor
冯振阳
洪小刚
阚敏
王洁
朱宇
陈奔
Original Assignee
亨通洛克利科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 亨通洛克利科技有限公司 filed Critical 亨通洛克利科技有限公司
Publication of WO2021047159A1 publication Critical patent/WO2021047159A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/27—Optical coupling means with polarisation selective and adjusting means
    • G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
    • G02B6/2773—Polarisation splitting or combining
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/2938—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM

Definitions

  • the invention relates to the technical field of optical division multiplexers, in particular to an optical wavelength division multiplexer.
  • Optical division multiplexers are used in optical fiber communication systems with multiple wavelengths, low channel crosstalk, and directional transmission. It is specifically used in optical communication devices, such as 100G CWDM, 400G CWDM ⁇ DWDM ⁇ LAN-WDM and other high-speed optical modules.
  • the wavelength division multiplexing in the optical module mainly includes the following two structural solutions:
  • the Zigzag MUX solution as shown in Figure 1, combines multiple thin-film filters on the side of the glass block, and uses the thin-film filters to have different transmittance and reflectivity for different wavelengths, and realizes the combination of 4 different wavelengths at the common port.
  • the Zigzag preparation process is relatively mature, the processing of dielectric films is complicated. This solution is suitable for fewer wavenumbers, reversible optical paths, different optical paths of each optical channel, and large output optical power differences.
  • Arrayed waveguide grating AWG scheme as shown in Figure 2.
  • Optical signals of different wavelengths are incident through the input waveguide, then enter the arrayed waveguide 2'through the input star coupler 1', and finally the optical signal is synthesized by the output star coupler 3'.
  • the light wave is output through the output waveguide.
  • the arrayed waveguide PLC is simple to manufacture and can realize multi-wavelength transmission, the AWG optical power loss is large, the crosstalk between each channel has a large signal-to-noise isolation, and the temperature is sensitive.
  • the present invention provides an optical wavelength division multiplexer, which reduces crosstalk signal and noise between channels, has good isolation, has low temperature and wavelength-dependent insertion loss, low manufacturing cost, and is integrated into a multi-transmission system.
  • Wavelength single-channel optical path realizes the stability and reliability of long-distance transmission of optical signals.
  • An optical wavelength division multiplexer which is characterized in that it comprises a first polarization beam combining structure, a second polarization beam combining structure, a third polarization beam combining structure, and a polarizer.
  • the polarization beam combining structure and the third polarization beam combining structure both include two incident parts and one emitting part.
  • the two incident parts of the first polarization beam combining structure respectively receive the signals of the first optical signal channel and the second optical signal channel.
  • the two incident parts of the second polarization beam combining structure respectively receive the corresponding beams of the third optical signal channel and the fourth optical signal channel, and the first polarization beam combining structure is respectively arranged at the front incident position of the polarizer.
  • Beam structure, second polarization beam combining structure, the first beam combining unit of the first output part of the first polarization beam combining structure, and the second beam combining unit of the second output part of the second polarization beam combining structure Do not face the incident end face of the polarizer, a third polarization beam combining structure is arranged behind the polarizer, and the two beam combining units on the emission end face of the polarizer face the third polarization beam combining unit respectively.
  • the two incident parts of the beam structure are arranged, and the exit part of the third polarization beam combining structure combines four beams of light into one beam for output.
  • the first polarization beam combining structure specifically includes a first half-wave plate, a first parallel flat plate, a first reflecting prism, and a first polarization beam combiner, and a first incident position of the first polarization beam combiner is provided with a first polarization beam combiner.
  • a parallel plate, a first half-wave plate is arranged above or below the first parallel plate, a first reflecting prism is arranged at the rear of the first half-wave plate, and the first parallel plate is used for receiving and passing through
  • the second optical signal channel emits a second optical signal
  • the first half-wave plate is used to receive the first optical signal emitted through the first optical signal channel
  • the first reflecting prism will pass through the first half-wave plate after polarization rotation.
  • the first optical signal is reflected to the second incident position of the first polarization beam combiner.
  • the output part of the first polarization beam combiner is the output part of the first polarization beam combiner structure, which converts the two beams to the changed polarization. Linearly polarized lights with orthogonal directions are combined into one beam;
  • the second polarization beam combiner structure specifically includes a second half-wave plate, a second parallel flat plate, a second reflecting prism, and a second polarization beam combiner.
  • a second polarization beam combiner is provided at a first incident position.
  • a parallel plate, a second half-wave plate is arranged above or below the second parallel plate, a second reflecting prism is arranged at the rear of the second half-wave plate, and the second parallel plate is used for receiving and passing through
  • the third optical signal channel emits the third optical signal
  • the second half-wave plate is used to receive the fourth optical signal emitted through the fourth optical signal channel
  • the second reflecting prism will pass through the second half-wave plate after polarization rotation.
  • the fourth optical signal is reflected to the second incident position of the second polarization beam combiner, and the output part of the second polarization beam combiner is the output part of the second polarization beam combiner structure, which changes the polarization of the two beams.
  • Linearly polarized lights with orthogonal directions are combined into one beam;
  • the third polarization beam combiner structure specifically includes a third half-wave plate, a fourth half-wave plate, a third reflecting prism, and a third polarization beam combiner.
  • the first incident position of the third polarization beam combiner is provided with a first incident position.
  • a quadruple half-wave plate, a third half-wave plate is arranged above or below the fourth half-wave plate, a third reflection prism is arranged at the rear of the third half-wave plate, and the third half-wave plate ,
  • the fourth half-wave plate is used to receive the combined light signals formed by combining the first polarization combining structure and the second polarization combining structure, and the third reflecting prism will pass the polarization rotation of the third half-wave plate.
  • the combined light signal is reflected to the second incident position of the third polarization beam combiner, and the output part of the third polarization beam combiner is the output part of the third polarization beam combiner structure, which polarizes the two beams in the direction of
  • the orthogonal combined light beams are transformed into the combined light beams of the same polarization state, and then output the mutually orthogonal polarization state beams to synthesize one light output, thereby realizing the four beams to be combined into one beam;
  • the first half-wave plate and the second half-wave plate are specifically 45° half-wave plates
  • the third half-wave plate and the fourth half-wave plate are specifically 22.5° half-wave plates, and the third and fourth half-wave plates are half-wave plates with different crystal main cross sections;
  • the polarizer is specifically a 45° polarizer
  • the first half-wave plate and the first parallel plate are both arranged up and down along a straight line that forms an angle with the plane parallel to the beam channel.
  • the thickness of the first half-wave plate and the thickness of the first parallel plate are the same;
  • the second half-wave plate and the second parallel plate are both arranged up and down along a straight line that is at an angle to the plane parallel to the beam channel.
  • the thickness of the second half-wave plate and the thickness of the second parallel plate are the same;
  • All the optical devices are not arranged parallel or perpendicular to the plane parallel to the beam channel, so that all the optical devices have a tilt angle, and the return loss of the optical signal at the end face of the optical device is reduced.
  • the first polarization beam combining structure and the second polarization beam combining structure adopt the polarization method for multiplexing.
  • the difference from the traditional optical wavelength division multiplexing is that this solution has high stability and is independent of wavelength and wavelength.
  • the influence of temperature can be used to combine the four beams of CWDM, DWDM and LAN-WDM; then, the two combined beams with orthogonal polarization directions are transformed into combined beams with the same polarization state, and then output orthogonal to each other Polarized light beams are combined into one light output, so that four beams can be combined into one beam; it reduces crosstalk signal and noise between channels, has good isolation, and has low temperature and wavelength-dependent insertion loss, low manufacturing cost, and integration into It can transmit multi-wavelength single-channel optical path to realize the stability and reliability of long-distance transmission of optical signals.
  • Figure 1 is a structure diagram of Zigzag MUX in the prior art
  • Fig. 2 is a structure diagram of an arrayed waveguide grating AWG in the prior art
  • FIG 3 is a schematic diagram of a specific embodiment of the overall structure of the present invention (including working principles);
  • FIG. 4 is a schematic diagram of a specific embodiment of the first polarization beam combining structure of the present invention (including working principles);
  • FIG. 5 is a schematic diagram of a specific embodiment of the second polarization beam combining structure of the present invention (including working principles);
  • FIG. 6 is a schematic diagram of a specific embodiment of the third polarization beam combining structure of the present invention (including working principles);
  • FIG. 7 is a working principle diagram of a 22.5° half-wave plate with different optical axes of the third polarization beam combining structure in a specific embodiment
  • An optical wavelength division multiplexer see Figure 3-7: It includes a first polarization beam combining structure 1, a second polarization beam combining structure 2, a polarizer 3, and a third polarization beam combining structure 4.
  • the beam structure 1, the second polarization beam combining structure 2, and the third polarization beam combining structure 4 each include two incident parts and one emitting part.
  • the two incident parts of the first polarization beam combining structure 1 respectively receive the first optical signal channel
  • the two incident parts of the second polarization combining structure 2 respectively receive the corresponding beams of the third optical signal channel CH3 and the fourth optical signal channel CH4, the front part of the polarizer 3
  • the incident positions are respectively arranged with a first polarization combining structure and a second polarization combining structure, the first beam combining unit of the first emission part of the first polarization combining structure 1, and the second polarization combining structure 2 of the second polarization combining structure.
  • the second beam combining unit of the emitting part faces the incident end surface of the polarizer 3, and a third polarization combining structure 4 is arranged behind the polarizer 3, and the two beam combining units on the emitting end surface of the polarizer 3 are respectively It is arranged toward the two incident parts of the third polarization beam combining structure 4, and the output part of the third polarization beam combining structure 4 combines four beams of light into one beam for output.
  • the first polarization beam combiner structure 1 specifically includes a first half-wave plate 11, a first parallel plate 12, a first reflecting prism 13, and a first polarization beam combiner 14.
  • the first polarization beam combiner 14 is provided with a first incident position
  • the first parallel plate 12 has a first half-wave plate 11 arranged above or below the first parallel plate 12, a first reflecting prism 13 is provided at the rear of the first half-wave plate 11, and the first parallel plate 12 is used for Receiving the second optical signal emitted through the second optical signal channel CH2, the first half-wave plate 11 is used to receive the first optical signal emitted through the first optical signal channel CH1, and the first reflecting prism 13 will be polarized by the first half-wave plate 11
  • the rotated first optical signal is reflected to the second incident position of the first polarization beam combiner 14.
  • the output part of the first polarization beam combiner 14 is the output part of the first polarization beam combiner structure 1, which changes the two beams The linearly polarized light whose polar
  • the second polarization beam combiner structure 2 specifically includes a second half-wave plate 22, a second parallel flat plate 21, a second reflective prism 23, and a second polarization beam combiner 24.
  • the first incident position of the second polarization beam combiner 24 is provided with
  • the second parallel plate 21 has a second half-wave plate 22 arranged above or below the second parallel plate 21, and a second reflecting prism 23 is provided at the rear of the second half-wave plate 22.
  • the second parallel plate 21 is used for Receiving the third optical signal emitted through the third optical signal channel CH3, the second half-wave plate 22 is used to receive the fourth optical signal emitted through the fourth optical signal channel CH4, and the second reflecting prism 23 will be polarized by the second half-wave plate 22
  • the rotated fourth optical signal is reflected to the second incident position of the second polarization beam combiner 24, and the output part of the second polarization beam combiner 24 is the output part of the second polarization beam combining structure 2, which changes the two beams
  • the third polarization beam combiner structure 4 specifically includes a third half-wave plate 41, a fourth half-wave plate 42, a third reflection prism 43, a third polarization beam combiner 44, and the first incident position of the third polarization beam combiner 44 is set There is a fourth half-wave plate 42, a third half-wave plate 41 is arranged above or below the fourth half-wave plate 42, and a third reflecting prism 43 is provided at the rear of the third half-wave plate 41.
  • the plate 41 and the fourth half-wave plate 42 are respectively used to receive the combined light signal formed by combining the first polarization combining structure 1 and the second polarization combining structure 2, and the third reflecting prism 43 will pass through the third half-wave plate 41.
  • the combined light signal after polarization rotation is reflected to the second incident position of the third polarization beam combiner 44.
  • the output part of the third polarization beam combiner 44 is the output part of the third polarization beam combining structure 4, which combines the two
  • the combined light beams with orthogonal polarization directions are transformed into combined light beams of the same polarization state, and then output orthogonal polarization state beams to combine one light output, thereby realizing the four beams to be combined into one beam;
  • the first half wave plate 11 and the second half wave plate 22 are specifically 45° half wave plates
  • the third half-wave plate 41 and the fourth half-wave plate 42 are specifically 22.5° half-wave plates, and the third and fourth half-wave plates are half-wave plates with different crystal main cross sections;
  • the first half-wave plate 11 and the first parallel plate 12 are both arranged up and down along a straight line at an angle to the plane parallel to the beam channel.
  • the thickness of the first half-wave plate 11 and the thickness of the first parallel plate 12 the same;
  • the second half-wave plate 22 and the second parallel plate 21 are both arranged up and down along a straight line at an angle to the plane parallel to the beam channel.
  • the thickness of the second half-wave plate 22 and the thickness of the second parallel plate 21 the same;
  • All the optical devices are not arranged parallel or perpendicular to the plane parallel to the beam channel, so that all the optical devices have a tilt angle, and the return loss of the optical signal at the end face of the optical device is reduced.
  • the first polarization beam combining structure 1 is arranged above the second polarization beam combining structure 2, and the first half-wave plate 11 of the first polarization beam combining structure 1 is located on the first parallel plate 12
  • the second half-wave plate 22 of the second polarization combining structure 2 is located below the second parallel plate 21, and the fourth half-wave plate 42 of the third polarization combining structure 4 is located at the third half-wave plate 41
  • the optical signal of the first optical signal channel CH1 passes through the first half-wave plate 11, the polarization direction is rotated by 90°, and is reflected by the first reflecting prism 13 to the first polarization beam combiner 14, and the optical signal of the second optical signal channel CH2 passes through
  • the first parallel plate 12 is incident on the first incident position of the first polarization beam combiner 14, and the first polarization beam combiner 14 combines two linearly polarized lights with varying polarization directions orthogonal to one beam;
  • the optical signal of the fourth optical signal channel CH4 passes through the second half-wave plate 22, the polarization direction is rotated by 90°, and is reflected by the second reflecting prism 23 to the second polarization beam combiner 24, and the optical signal of the third optical signal channel CH3 passes
  • the second parallel plate 21 is incident on the first incident position of the second polarization beam combiner 24, and the second polarization beam combiner 24 combines two linearly polarized lights with varying polarization directions orthogonal to one beam;
  • the three output optical signals of the polarizer are rotated 45° clockwise using the third half-wave plate 41, and the polarization direction is changed to be parallel to the Y direction, as shown in Figure 7(a), while using the fourth half-wave plate 41.
  • the wave plate 42 rotates another book light signal by 45° counterclockwise, and the polarization direction is changed to be perpendicular to the Y direction, as shown in FIG. 7(b).
  • the third reflecting prism 43 is used to reflect the output optical signal of the third half-wave plate 41, and transmit it to the third polarization beam combiner 44, and at the same time output the optical signal with the fourth half-wave plate 42 to combine the polarization direction orthogonal to the polarization direction. Beam output light.
  • the polarization method is used for multiplexing.
  • the difference from the traditional optical wavelength division multiplexing is that this scheme has high stability and is not affected by wavelength and temperature. It can be used for CWDM, DWDM and LAN-WDM four-beam optical multiplexing.
  • the first polarization beam combining structure, the second polarization beam combining structure, the incident position of the light unit is composed of parallel flat plates, 45° half-wave plates, and parallel flat plates 45°, half-wave plates The same thickness, thereby reducing the optical path difference;
  • the third polarization beam combining structure composed of a polarizer, a 22.5° half-wave plate, a reflective prism, and a polarization beam combiner to combine the two beams with orthogonal polarization directions
  • the light beam is transformed into a combined light beam of the same polarization state, and then the mutually orthogonal polarization state beams are outputted to synthesize one light output, thereby realizing the four beams to be combined into one light beam.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

An optical wavelength-division multiplexer, comprising a first polarizing beam-combining structure (1), a second polarizing beam-combining structure (2), a polarizer (3), and a third polarizing beam-combining structure (4). The first polarizing beam-combining structure (1), the second polarizing beam-combining structure (2), and the third polarizing beam-combining structure (4) each comprise two incident parts and one emitting part. The two incident parts of the first polarizing beam-combining structure (1) respectively receive corresponding beams of a first optical signal channel (CH1) and of a second optical signal channel (CH2). The two incident parts of the second polarizing beam-combining structure (2) respectively receive corresponding beams of a third optical signal channel (CH3) and of a fourth optical signal channel (CH4). Front part incident positions of the polarizer (3) respectively are provided with the first polarizing beam-combining structure (1) and the second polarizing beam-combining structure (2). This reduces the crosstalk signal-to-noise ratio between the channels, provides a great degree of separation, low temperature- and wavelength-related insertion loss, and inexpensive manufacturing costs, is integrated as a transmissible multiwavelength single-channel optical path, and implements the stability and reliability of long-distance transmission of optical signals.

Description

一种光波分复用器Optical wavelength division multiplexer 技术领域Technical field
本发明涉及光分复用器的技术领域，具体为一种光波分复用器。The invention relates to the technical field of optical division multiplexers, in particular to an optical wavelength division multiplexer.
背景技术Background technique
光分复用器是应用于多波长、通道串扰低、定向传输的光纤通信***中。具体应用于光通信器件，如100G CWDM、400G CWDM\DWDM\LAN-WDM等的高速光模块中。Optical division multiplexers are used in optical fiber communication systems with multiple wavelengths, low channel crosstalk, and directional transmission. It is specifically used in optical communication devices, such as 100G CWDM, 400G CWDM\DWDM\LAN-WDM and other high-speed optical modules.
现有技术中，光模块中波分复用主要为如下两种结构方案：In the prior art, the wavelength division multiplexing in the optical module mainly includes the following two structural solutions:
1 Zigzag MUX方案、见图1，将多个薄膜滤波片组合在玻璃块侧边，利用薄膜滤波片对不同波长的透过率和反射率不同，在公共端口实现4种不同波长光合并。目前，虽然制备Zigzag工艺已经比较成熟，但介质薄膜加工复杂，此方案适应于波数较少，光路可逆，各光通道光程不同，输出光功率差异性大。1 The Zigzag MUX solution, as shown in Figure 1, combines multiple thin-film filters on the side of the glass block, and uses the thin-film filters to have different transmittance and reflectivity for different wavelengths, and realizes the combination of 4 different wavelengths at the common port. At present, although the Zigzag preparation process is relatively mature, the processing of dielectric films is complicated. This solution is suitable for fewer wavenumbers, reversible optical paths, different optical paths of each optical channel, and large output optical power differences.
2阵列波导光栅AWG方案、见图2，不同波长光信号通过输入波导入射，然后通过输入星型耦合器1’，进入到阵列波导2’，最后光信号由输出星型耦合器3’合成一束光波，通过输出波导输出。阵列波导PLC虽然制造简单可实现多波长传输，但AWG光功率损耗大，各通道之间存在串扰信噪隔离度大，温度影响敏感。2 Arrayed waveguide grating AWG scheme, as shown in Figure 2. Optical signals of different wavelengths are incident through the input waveguide, then enter the arrayed waveguide 2'through the input star coupler 1', and finally the optical signal is synthesized by the output star coupler 3'. The light wave is output through the output waveguide. Although the arrayed waveguide PLC is simple to manufacture and can realize multi-wavelength transmission, the AWG optical power loss is large, the crosstalk between each channel has a large signal-to-noise isolation, and the temperature is sensitive.
发明内容Summary of the invention
针对上述问题，本发明提供了一种光波分复用器，其使得各通道之间串扰信噪降低、隔离度好，且温度和波长相关插损小、制造成本低，且整合成 可传输多波长单通道光路，实现光信号远距离传输的稳定性和可靠性。In view of the above problems, the present invention provides an optical wavelength division multiplexer, which reduces crosstalk signal and noise between channels, has good isolation, has low temperature and wavelength-dependent insertion loss, low manufacturing cost, and is integrated into a multi-transmission system. Wavelength single-channel optical path realizes the stability and reliability of long-distance transmission of optical signals.
一种光波分复用器，其特征在于：其包括第一偏振合束结构、第二偏振合束结构、第三偏振合束结构、起偏器，所述第一偏振合束结构、第二偏振合束结构、第三偏振合束结构均包括有两个入射部分、一个射出部分，所述第一偏振合束结构的两个入射部分分别接收第一光信号通道、第二光信号通道的对应光束，所述第二偏振合束结构的两个入射部分分别接收第三光信号通道、第四光信号通道的对应光束，所述起偏器的前部入射位置分别布置有第一偏振合束结构、第二偏振合合束结构，所述第一偏振合束结构的第一射出部分的第一合束光单元、第二偏振合束结构的第二射出部分的第二合束光单元别朝向所述起偏器的入射端面，所述起偏器的后方布置有第三偏振合束结构，所述起偏器的射出端面的两个合束光单元分别朝向所述第三偏振合束结构的两个入射部分布置，所述第三偏振合束结构射出部分将四束光合成一束输出。An optical wavelength division multiplexer, which is characterized in that it comprises a first polarization beam combining structure, a second polarization beam combining structure, a third polarization beam combining structure, and a polarizer. The polarization beam combining structure and the third polarization beam combining structure both include two incident parts and one emitting part. The two incident parts of the first polarization beam combining structure respectively receive the signals of the first optical signal channel and the second optical signal channel. Corresponding to the light beam, the two incident parts of the second polarization beam combining structure respectively receive the corresponding beams of the third optical signal channel and the fourth optical signal channel, and the first polarization beam combining structure is respectively arranged at the front incident position of the polarizer. Beam structure, second polarization beam combining structure, the first beam combining unit of the first output part of the first polarization beam combining structure, and the second beam combining unit of the second output part of the second polarization beam combining structure Do not face the incident end face of the polarizer, a third polarization beam combining structure is arranged behind the polarizer, and the two beam combining units on the emission end face of the polarizer face the third polarization beam combining unit respectively. The two incident parts of the beam structure are arranged, and the exit part of the third polarization beam combining structure combines four beams of light into one beam for output.
其进一步特征在于：Its further features are:
所述第一偏振合束结构具体包括第一半波片、第一平行平板、第一反射棱镜、第一偏振合束器，所述第一偏振合束器的第一入射位置设置有第一平行平板，沿着所述第一平行平板的上方或下方布置有第一半波片，所述第一半波片的后部设置有第一反射棱镜，所述第一平行板用于接收通过第二光信号通道射出第二光信号，所述第一半波片用于接收通过第一光信号通道射出第一光信号，所述第一反射棱镜将通过第一半波片偏振旋转后的第一光信号反射到所述第一偏振合束器的第二入射位置，所述第一偏振合束器的射出部分即为第一偏振合束结构的射出部分，其将两束变化的偏振方向正交的线偏 振光合成一束；The first polarization beam combining structure specifically includes a first half-wave plate, a first parallel flat plate, a first reflecting prism, and a first polarization beam combiner, and a first incident position of the first polarization beam combiner is provided with a first polarization beam combiner. A parallel plate, a first half-wave plate is arranged above or below the first parallel plate, a first reflecting prism is arranged at the rear of the first half-wave plate, and the first parallel plate is used for receiving and passing through The second optical signal channel emits a second optical signal, the first half-wave plate is used to receive the first optical signal emitted through the first optical signal channel, and the first reflecting prism will pass through the first half-wave plate after polarization rotation. The first optical signal is reflected to the second incident position of the first polarization beam combiner. The output part of the first polarization beam combiner is the output part of the first polarization beam combiner structure, which converts the two beams to the changed polarization. Linearly polarized lights with orthogonal directions are combined into one beam;
所述第二偏振合束结构具体包括第二半波片、第二平行平板、第二反射棱镜、第二偏振合束器，所述第二偏振合束器的第一入射位置设置有第二平行平板，沿着所述第二平行平板的上方或下方布置有第二半波片，所述第二半波片的后部设置有第二反射棱镜，所述第二平行板用于接收通过第三光信号通道射出第三光信号，所述第二半波片用于接收通过第四光信号通道射出第四光信号，所述第二反射棱镜将通过第二半波片偏振旋转后的第四光信号反射到所述第二偏振合束器的第二入射位置，所述第二偏振合束器的射出部分即为第二偏振合束结构的射出部分，其将两束变化的偏振方向正交的线偏振光合成一束；The second polarization beam combiner structure specifically includes a second half-wave plate, a second parallel flat plate, a second reflecting prism, and a second polarization beam combiner. A second polarization beam combiner is provided at a first incident position. A parallel plate, a second half-wave plate is arranged above or below the second parallel plate, a second reflecting prism is arranged at the rear of the second half-wave plate, and the second parallel plate is used for receiving and passing through The third optical signal channel emits the third optical signal, the second half-wave plate is used to receive the fourth optical signal emitted through the fourth optical signal channel, and the second reflecting prism will pass through the second half-wave plate after polarization rotation. The fourth optical signal is reflected to the second incident position of the second polarization beam combiner, and the output part of the second polarization beam combiner is the output part of the second polarization beam combiner structure, which changes the polarization of the two beams. Linearly polarized lights with orthogonal directions are combined into one beam;
所述第三偏振合束结构具体包括第三半波片、第四半波片、第三反射棱镜、第三偏振合束器，所述第三偏振合束器的第一入射位置设置有第四半波片，沿着所述第四半波片的上方或下方布置有第三半波片，所述第三半波片的后部设置有第三反射棱镜，所述第三半波片、第四半波片分别用于接收通过第一偏振合束结构、第二偏振合束结构合束形成的合束光信号，所述第三反射棱镜将通过第三半波片偏振旋转后的合束光信号反射到所述第三偏振合束器的第二入射位置，所述第三偏振合束器的射出部分即为第三偏振合束结构的射出部分，其将两束偏振方向为正交的合光光束，变换为同一种偏振态的合光光束，然后输出相互正交的偏振态光束、合成一束光输出，从而实现将四束光合成一束；The third polarization beam combiner structure specifically includes a third half-wave plate, a fourth half-wave plate, a third reflecting prism, and a third polarization beam combiner. The first incident position of the third polarization beam combiner is provided with a first incident position. A quadruple half-wave plate, a third half-wave plate is arranged above or below the fourth half-wave plate, a third reflection prism is arranged at the rear of the third half-wave plate, and the third half-wave plate , The fourth half-wave plate is used to receive the combined light signals formed by combining the first polarization combining structure and the second polarization combining structure, and the third reflecting prism will pass the polarization rotation of the third half-wave plate. The combined light signal is reflected to the second incident position of the third polarization beam combiner, and the output part of the third polarization beam combiner is the output part of the third polarization beam combiner structure, which polarizes the two beams in the direction of The orthogonal combined light beams are transformed into the combined light beams of the same polarization state, and then output the mutually orthogonal polarization state beams to synthesize one light output, thereby realizing the four beams to be combined into one beam;
所述第一半波片、第二半波片具体为45°半波片；The first half-wave plate and the second half-wave plate are specifically 45° half-wave plates;
所述第三半波片、第四半波片具体为22.5°半波片，所述第三半波片、 第四半波片为不同晶体主截面的半波片；The third half-wave plate and the fourth half-wave plate are specifically 22.5° half-wave plates, and the third and fourth half-wave plates are half-wave plates with different crystal main cross sections;
所述起偏器具体为45°起偏器；The polarizer is specifically a 45° polarizer;
所述第一半波片、第一平行平板两者沿着一条和光束通道所平行的平面成角的直线上、下位置布置，所述第一半波片的厚度和第一平行平板的厚度相同；The first half-wave plate and the first parallel plate are both arranged up and down along a straight line that forms an angle with the plane parallel to the beam channel. The thickness of the first half-wave plate and the thickness of the first parallel plate are the same;
所述第二半波片、第二平行平板两者沿着一条和光束通道所平行的平面成角的直线上、下位置布置，所述第二半波片的厚度和第二平行平板的厚度相同；The second half-wave plate and the second parallel plate are both arranged up and down along a straight line that is at an angle to the plane parallel to the beam channel. The thickness of the second half-wave plate and the thickness of the second parallel plate are the same;
所有的光学器件都不平行或垂直于光束通道所平行的平面布置，使得所有的光学器件有倾斜角，减小光信号在光学器件端面回损。All the optical devices are not arranged parallel or perpendicular to the plane parallel to the beam channel, so that all the optical devices have a tilt angle, and the return loss of the optical signal at the end face of the optical device is reduced.
采用上述技术方案后，其通过第一偏振合束结构、第二偏振合束结构采用用偏振的方法进行合波，同传统的光波分复用的区别在于此方案稳定性高，不受波长和温度的影响，可用于CWDM、DWDM和LAN-WDM的四束光合波；之后将两束偏振方向为正交的合光光束，变换为同一种偏振态的合光光束，然后输出相互正交的偏振态光束、合成一束光输出，从而实现将四束光合成一束；其使得各通道之间串扰信噪降低、隔离度好，且温度和波长相关插损小、制造成本低，且整合成可传输多波长单通道光路，实现光信号远距离传输的稳定性和可靠性。After adopting the above technical solution, the first polarization beam combining structure and the second polarization beam combining structure adopt the polarization method for multiplexing. The difference from the traditional optical wavelength division multiplexing is that this solution has high stability and is independent of wavelength and wavelength. The influence of temperature can be used to combine the four beams of CWDM, DWDM and LAN-WDM; then, the two combined beams with orthogonal polarization directions are transformed into combined beams with the same polarization state, and then output orthogonal to each other Polarized light beams are combined into one light output, so that four beams can be combined into one beam; it reduces crosstalk signal and noise between channels, has good isolation, and has low temperature and wavelength-dependent insertion loss, low manufacturing cost, and integration into It can transmit multi-wavelength single-channel optical path to realize the stability and reliability of long-distance transmission of optical signals.
附图说明Description of the drawings
图1为现有技术的Zigzag MUX结构图；Figure 1 is a structure diagram of Zigzag MUX in the prior art;
图2为现有技术的阵列波导光栅AWG结构图；Fig. 2 is a structure diagram of an arrayed waveguide grating AWG in the prior art;
图3为本发明的整体结构具体实施例示意图(包括工作原理)；Figure 3 is a schematic diagram of a specific embodiment of the overall structure of the present invention (including working principles);
图4为本发明的第一偏振合束结构的具体实施例示意图(包括工作原理)；4 is a schematic diagram of a specific embodiment of the first polarization beam combining structure of the present invention (including working principles);
图5为本发明的第二偏振合束结构的具体实施例示意图(包括工作原理)；5 is a schematic diagram of a specific embodiment of the second polarization beam combining structure of the present invention (including working principles);
图6为本发明的第三偏振合束结构的具体实施例示意图(包括工作原理)；6 is a schematic diagram of a specific embodiment of the third polarization beam combining structure of the present invention (including working principles);
图7为具体实施例中第三偏振合束结构的不同光轴的22.5°半波片工作原理图；7 is a working principle diagram of a 22.5° half-wave plate with different optical axes of the third polarization beam combining structure in a specific embodiment;
图中序号所对应的名称如下：The names corresponding to the serial numbers in the figure are as follows:
输入星型耦合器1’、阵列波导2’、输出星型耦合器3’Input star coupler 1’, arrayed waveguide 2’, output star coupler 3’
第一偏振合束结构1、第一半波片11、第一平行平板12、第一反射棱镜13、第一偏振合束器14、第二偏振合束结构2、第二半波片22、第二平行平板21、第二反射棱镜23、第二偏振合束器24、起偏器3、第三偏振合束结构4、第三半波片41、第四半波片42、第三反射棱镜43、第三偏振合束器44、第一光信号通道CH1、第二光信号通道CH2、第三光信号通道CH3、第四光信号通道CH4。The first polarization beam combining structure 1, the first half-wave plate 11, the first parallel plate 12, the first reflecting prism 13, the first polarization beam combiner 14, the second polarization beam combining structure 2, the second half-wave plate 22, The second parallel plate 21, the second reflecting prism 23, the second polarization beam combiner 24, the polarizer 3, the third polarization beam combining structure 4, the third half-wave plate 41, the fourth half-wave plate 42, the third reflection The prism 43, the third polarization beam combiner 44, the first optical signal channel CH1, the second optical signal channel CH2, the third optical signal channel CH3, and the fourth optical signal channel CH4.
具体实施方式detailed description
一种光波分复用器，见图3-图7：其包括第一偏振合束结构1、第二偏振合束结构2、起偏器3、第三偏振合束结构4，第一偏振合束结构1、第二偏振合束结构2、第三偏振合束结构4均包括有两个入射部分、一个射出部分，第一偏振合束结构1的两个入射部分分别接收第一光信号通道CH1、第二光信号通道CH2的对应光束，第二偏振合束结构2的两个入射部分分别接收第三光信号通道CH3、第四光信号通道CH4的对应光束，起偏器3的前部入射位置分别布置有第一偏振合束结构、第二偏振合合束结构，第一偏振合束结构1的第一射出部分的第一合束光单元、第二偏振合束结构2的第二射出部分的 第二合束光单元别朝向起偏器3的入射端面，起偏器3的后方布置有第三偏振合束结构4，起偏器3的射出端面的两个合束光单元分别朝向第三偏振合束结构4的两个入射部分布置，第三偏振合束结构4射出部分将四束光合成一束输出。An optical wavelength division multiplexer, see Figure 3-7: It includes a first polarization beam combining structure 1, a second polarization beam combining structure 2, a polarizer 3, and a third polarization beam combining structure 4. The beam structure 1, the second polarization beam combining structure 2, and the third polarization beam combining structure 4 each include two incident parts and one emitting part. The two incident parts of the first polarization beam combining structure 1 respectively receive the first optical signal channel The corresponding beams of CH1, the second optical signal channel CH2, the two incident parts of the second polarization combining structure 2 respectively receive the corresponding beams of the third optical signal channel CH3 and the fourth optical signal channel CH4, the front part of the polarizer 3 The incident positions are respectively arranged with a first polarization combining structure and a second polarization combining structure, the first beam combining unit of the first emission part of the first polarization combining structure 1, and the second polarization combining structure 2 of the second polarization combining structure. The second beam combining unit of the emitting part faces the incident end surface of the polarizer 3, and a third polarization combining structure 4 is arranged behind the polarizer 3, and the two beam combining units on the emitting end surface of the polarizer 3 are respectively It is arranged toward the two incident parts of the third polarization beam combining structure 4, and the output part of the third polarization beam combining structure 4 combines four beams of light into one beam for output.
第一偏振合束结构1具体包括第一半波片11、第一平行平板12、第一反射棱镜13、第一偏振合束器14，第一偏振合束器14的第一入射位置设置有第一平行平板12，沿着第一平行平板12的上方或下方布置有第一半波片11，第一半波片11的后部设置有第一反射棱镜13，第一平行板12用于接收通过第二光信号通道CH2射出第二光信号，第一半波片11用于接收通过第一光信号通道CH1射出第一光信号，第一反射棱镜13将通过第一半波片11偏振旋转后的第一光信号反射到第一偏振合束器14的第二入射位置，第一偏振合束器14的射出部分即为第一偏振合束结构1的射出部分，其将两束变化的偏振方向正交的线偏振光合成一束；The first polarization beam combiner structure 1 specifically includes a first half-wave plate 11, a first parallel plate 12, a first reflecting prism 13, and a first polarization beam combiner 14. The first polarization beam combiner 14 is provided with a first incident position The first parallel plate 12 has a first half-wave plate 11 arranged above or below the first parallel plate 12, a first reflecting prism 13 is provided at the rear of the first half-wave plate 11, and the first parallel plate 12 is used for Receiving the second optical signal emitted through the second optical signal channel CH2, the first half-wave plate 11 is used to receive the first optical signal emitted through the first optical signal channel CH1, and the first reflecting prism 13 will be polarized by the first half-wave plate 11 The rotated first optical signal is reflected to the second incident position of the first polarization beam combiner 14. The output part of the first polarization beam combiner 14 is the output part of the first polarization beam combiner structure 1, which changes the two beams The linearly polarized light whose polarization direction is orthogonal to combine into one beam;
第二偏振合束结构2具体包括第二半波片22、第二平行平板21、第二反射棱镜23、第二偏振合束器24，第二偏振合束器24的第一入射位置设置有第二平行平板21，沿着第二平行平板21的上方或下方布置有第二半波片22，第二半波片22的后部设置有第二反射棱镜23，第二平行板21用于接收通过第三光信号通道CH3射出第三光信号，第二半波片22用于接收通过第四光信号通道CH4射出第四光信号，第二反射棱镜23将通过第二半波片22偏振旋转后的第四光信号反射到第二偏振合束器24的第二入射位置，第二偏振合束器24的射出部分即为第二偏振合束结构2的射出部分，其将两束变化的偏振方向正交的线偏振光合成一束；The second polarization beam combiner structure 2 specifically includes a second half-wave plate 22, a second parallel flat plate 21, a second reflective prism 23, and a second polarization beam combiner 24. The first incident position of the second polarization beam combiner 24 is provided with The second parallel plate 21 has a second half-wave plate 22 arranged above or below the second parallel plate 21, and a second reflecting prism 23 is provided at the rear of the second half-wave plate 22. The second parallel plate 21 is used for Receiving the third optical signal emitted through the third optical signal channel CH3, the second half-wave plate 22 is used to receive the fourth optical signal emitted through the fourth optical signal channel CH4, and the second reflecting prism 23 will be polarized by the second half-wave plate 22 The rotated fourth optical signal is reflected to the second incident position of the second polarization beam combiner 24, and the output part of the second polarization beam combiner 24 is the output part of the second polarization beam combining structure 2, which changes the two beams The linearly polarized light whose polarization direction is orthogonal to combine into one beam;
第三偏振合束结构4具体包括第三半波片41、第四半波片42、第三反射棱镜43、第三偏振合束器44，第三偏振合束器44的第一入射位置设置有第四半波片42，沿着第四半波片42的上方或下方布置有第三半波片41，第三半波片41的后部设置有第三反射棱镜43，第三半波片41、第四半波片42分别用于接收通过第一偏振合束结构1、第二偏振合束结构2合束形成的合束光信号，第三反射棱镜43将通过第三半波片41偏振旋转后的合束光信号反射到第三偏振合束器44的第二入射位置，第三偏振合束器44的射出部分即为第三偏振合束结构4的射出部分，其将两束偏振方向为正交的合光光束，变换为同一种偏振态的合光光束，然后输出相互正交的偏振态光束、合成一束光输出，从而实现将四束光合成一束；The third polarization beam combiner structure 4 specifically includes a third half-wave plate 41, a fourth half-wave plate 42, a third reflection prism 43, a third polarization beam combiner 44, and the first incident position of the third polarization beam combiner 44 is set There is a fourth half-wave plate 42, a third half-wave plate 41 is arranged above or below the fourth half-wave plate 42, and a third reflecting prism 43 is provided at the rear of the third half-wave plate 41. The plate 41 and the fourth half-wave plate 42 are respectively used to receive the combined light signal formed by combining the first polarization combining structure 1 and the second polarization combining structure 2, and the third reflecting prism 43 will pass through the third half-wave plate 41. The combined light signal after polarization rotation is reflected to the second incident position of the third polarization beam combiner 44. The output part of the third polarization beam combiner 44 is the output part of the third polarization beam combining structure 4, which combines the two The combined light beams with orthogonal polarization directions are transformed into combined light beams of the same polarization state, and then output orthogonal polarization state beams to combine one light output, thereby realizing the four beams to be combined into one beam;
第一半波片11、第二半波片22具体为45°半波片；The first half wave plate 11 and the second half wave plate 22 are specifically 45° half wave plates;
第三半波片41、第四半波片42具体为22.5°半波片，第三半波片、第四半波片为不同晶体主截面的半波片；The third half-wave plate 41 and the fourth half-wave plate 42 are specifically 22.5° half-wave plates, and the third and fourth half-wave plates are half-wave plates with different crystal main cross sections;
第一半波片11、第一平行平板12两者沿着一条和光束通道所平行的平面成角的直线上、下位置布置，第一半波片11的厚度和第一平行平板12的厚度相同；The first half-wave plate 11 and the first parallel plate 12 are both arranged up and down along a straight line at an angle to the plane parallel to the beam channel. The thickness of the first half-wave plate 11 and the thickness of the first parallel plate 12 the same;
第二半波片22、第二平行平板21两者沿着一条和光束通道所平行的平面成角的直线上、下位置布置，第二半波片22的厚度和第二平行平板21的厚度相同；The second half-wave plate 22 and the second parallel plate 21 are both arranged up and down along a straight line at an angle to the plane parallel to the beam channel. The thickness of the second half-wave plate 22 and the thickness of the second parallel plate 21 the same;
所有的光学器件都不平行或垂直于光束通道所平行的平面布置，使得所有的光学器件有倾斜角，减小光信号在光学器件端面回损。All the optical devices are not arranged parallel or perpendicular to the plane parallel to the beam channel, so that all the optical devices have a tilt angle, and the return loss of the optical signal at the end face of the optical device is reduced.
具体实施例，见图3-图7，第一偏振合束结构1位于第二偏振合束结构2 的上方布置，第一偏振合束结构1的第一半波片11位于第一平行平板12的上方布置，第二偏振合束结构2的第二半波片22位于第二平行平板21的下方布置，第三偏振合束结构4的第四半波片42的位于第三半波片41的下方布置。For specific embodiments, see Figures 3-7, the first polarization beam combining structure 1 is arranged above the second polarization beam combining structure 2, and the first half-wave plate 11 of the first polarization beam combining structure 1 is located on the first parallel plate 12 The second half-wave plate 22 of the second polarization combining structure 2 is located below the second parallel plate 21, and the fourth half-wave plate 42 of the third polarization combining structure 4 is located at the third half-wave plate 41 The layout below.
其工作原理如下：Its working principle is as follows:
第一光信号通道CH1的光信号通过第一半波片11，偏振方向旋转90°，由第一反射棱镜13反射到第一偏振合束器14上，第二光信号通道CH2的光信号通过第一平行平板12射入第一偏振合束器14的第一入射位置，第一偏振合束器14将两束变化的偏振方向正交的线偏振光合成一束；The optical signal of the first optical signal channel CH1 passes through the first half-wave plate 11, the polarization direction is rotated by 90°, and is reflected by the first reflecting prism 13 to the first polarization beam combiner 14, and the optical signal of the second optical signal channel CH2 passes through The first parallel plate 12 is incident on the first incident position of the first polarization beam combiner 14, and the first polarization beam combiner 14 combines two linearly polarized lights with varying polarization directions orthogonal to one beam;
第四光信号通道CH4的光信号通过第二半波片22，偏振方向旋转90°，由第二反射棱镜23反射到第二偏振合束器24上，第三光信号通道CH3的光信号通过第二平行平板21射入第二偏振合束器24的第一入射位置，第二偏振合束器24将两束变化的偏振方向正交的线偏振光合成一束；The optical signal of the fourth optical signal channel CH4 passes through the second half-wave plate 22, the polarization direction is rotated by 90°, and is reflected by the second reflecting prism 23 to the second polarization beam combiner 24, and the optical signal of the third optical signal channel CH3 passes The second parallel plate 21 is incident on the first incident position of the second polarization beam combiner 24, and the second polarization beam combiner 24 combines two linearly polarized lights with varying polarization directions orthogonal to one beam;
使用起偏器3，将两束光起偏为45°偏振方向的两束光；Use the polarizer 3 to polarize the two beams into two beams of 45° polarization direction;
将起偏器的3束输出的光信号，利用第三半波片41，顺时针旋转45°，偏振方向变化为平行于Y方向，如图7(a)所示，同时利用第四°半波片42，将另一书光信号逆时针旋转45°，偏振方向变化为垂直于Y方向，如图7(b)所示。第三反射棱镜43用于反射第三半波片41输出光信号，传输到第三偏振合束器44上，同时和第四半波片42输出光信号、合成偏振方向正交的偏振方向一束输出光。The three output optical signals of the polarizer are rotated 45° clockwise using the third half-wave plate 41, and the polarization direction is changed to be parallel to the Y direction, as shown in Figure 7(a), while using the fourth half-wave plate 41. The wave plate 42 rotates another book light signal by 45° counterclockwise, and the polarization direction is changed to be perpendicular to the Y direction, as shown in FIG. 7(b). The third reflecting prism 43 is used to reflect the output optical signal of the third half-wave plate 41, and transmit it to the third polarization beam combiner 44, and at the same time output the optical signal with the fourth half-wave plate 42 to combine the polarization direction orthogonal to the polarization direction. Beam output light.
其有益效果如下：Its beneficial effects are as follows:
1.采用偏振的方法进行合波，同传统的光波分复用的区别在于此方案稳 定性高，不受波长和温度的影响，可用于CWDM、DWDM和LAN-WDM的四束光合波。1. The polarization method is used for multiplexing. The difference from the traditional optical wavelength division multiplexing is that this scheme has high stability and is not affected by wavelength and temperature. It can be used for CWDM, DWDM and LAN-WDM four-beam optical multiplexing.
2.减小光路光程差，其第一偏振合束结构、第二偏振合束结构，光单元入射位置都是由平行平板、45°半波片组成，并且平行平板45°、半波片同相同厚度，从而减小光路光程差；2. Reduce the optical path difference, the first polarization beam combining structure, the second polarization beam combining structure, the incident position of the light unit is composed of parallel flat plates, 45° half-wave plates, and parallel flat plates 45°, half-wave plates The same thickness, thereby reducing the optical path difference;
3.实现光分复用***器件少，利用起偏器、22.5°半波片、反射棱镜、偏振合束器所组成的第三偏振合束结构，将两束偏振方向为正交的合光光束，变换为同一种偏振态的合光光束，然后输出相互正交的偏振态光束、合成一束光输出，从而实现将四束光合成一束。3. Realize the optical division multiplexing system with fewer components, using the third polarization beam combining structure composed of a polarizer, a 22.5° half-wave plate, a reflective prism, and a polarization beam combiner to combine the two beams with orthogonal polarization directions The light beam is transformed into a combined light beam of the same polarization state, and then the mutually orthogonal polarization state beams are outputted to synthesize one light output, thereby realizing the four beams to be combined into one light beam.
4.减小光信号在光学器件端面回损，设计所有光学器件有一定的倾斜角。4. Reduce the return loss of the optical signal at the end face of the optical device, and design all optical devices to have a certain tilt angle.
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。In addition, it should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole The technical solutions in the various embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

  1. 一种光波分复用器，其特征在于：其包括第一偏振合束结构、第二偏振合束结构、第三偏振合束结构、起偏器，所述第一偏振合束结构、第二偏振合束结构、第三偏振合束结构均包括有两个入射部分、一个射出部分，所述第一偏振合束结构的两个入射部分分别接收第一光信号通道、第二光信号通道的对应光束，所述第二偏振合束结构的两个入射部分分别接收第三光信号通道、第四光信号通道的对应光束，所述起偏器的前部入射位置分别布置有第一偏振合束结构、第二偏振合合束结构，所述第一偏振合束结构的第一射出部分的第一合束光单元、第二偏振合束结构的第二射出部分的第二合束光单元别朝向所述起偏器的入射端面，所述起偏器的后方布置有第三偏振合束结构，所述起偏器的射出端面的两个合束光单元分别朝向所述第三偏振合束结构的两个入射部分布置，所述第三偏振合束结构射出部分将四束光合成一束输出。An optical wavelength division multiplexer, which is characterized in that it comprises a first polarization beam combining structure, a second polarization beam combining structure, a third polarization beam combining structure, and a polarizer. The polarization beam combining structure and the third polarization beam combining structure both include two incident parts and one emitting part. The two incident parts of the first polarization beam combining structure respectively receive the signals of the first optical signal channel and the second optical signal channel. Corresponding to the light beam, the two incident parts of the second polarization beam combining structure respectively receive the corresponding beams of the third optical signal channel and the fourth optical signal channel, and the first polarization beam combining structure is respectively arranged at the front incident position of the polarizer. Beam structure, second polarization beam combining structure, the first beam combining unit of the first output part of the first polarization beam combining structure, and the second beam combining unit of the second output part of the second polarization beam combining structure Do not face the incident end face of the polarizer, a third polarization beam combining structure is arranged behind the polarizer, and the two beam combining units on the emission end face of the polarizer face the third polarization beam combining unit respectively. The two incident parts of the beam structure are arranged, and the exit part of the third polarization beam combining structure combines four beams of light into one beam for output.
  2. 如权利要求1所述的一种光波分复用器，其特征在于：所述第一偏振合束结构具体包括第一半波片、第一平行平板、第一反射棱镜、第一偏振合束器，所述第一偏振合束器的第一入射位置设置有第一平行平板，沿着所述第一平行平板的上方或下方布置有第一半波片，所述第一半波片的后部设置有第一反射棱镜，所述第一平行板用于接收通过第二光信号通道射出第二光信号，所述第一半波片用于接收通过第一光信号通道射出第一光信号，所述第一反射棱镜将通过第一半波片偏振旋转后的第一光信号反射到所述第一偏振合束器的第二入射位置，所述第一偏振合束器的射出部分即为第一偏振合束结构的射出部分。The optical wavelength division multiplexer according to claim 1, wherein the first polarization beam combining structure specifically includes a first half-wave plate, a first parallel plate, a first reflecting prism, and a first polarization beam combining structure. The first incident position of the first polarization beam combiner is provided with a first parallel flat plate, and a first half-wave plate is arranged above or below the first parallel flat plate. The rear part is provided with a first reflecting prism, the first parallel plate is used to receive the second light signal emitted through the second optical signal channel, and the first half-wave plate is used to receive the first light emitted through the first optical signal channel Signal, the first reflecting prism reflects the first optical signal after the polarization rotation of the first half-wave plate to the second incident position of the first polarization beam combiner, and the exit part of the first polarization beam combiner That is the output part of the first polarization beam combining structure.
  3. 如权利要求2所述的一种光波分复用器，其特征在于：所述第二偏振 合束结构具体包括第二半波片、第二平行平板、第二反射棱镜、第二偏振合束器，所述第二偏振合束器的第一入射位置设置有第二平行平板，沿着所述第二平行平板的上方或下方布置有第二半波片，所述第二半波片的后部设置有第二反射棱镜，所述第二平行板用于接收通过第三光信号通道射出第三光信号，所述第二半波片用于接收通过第四光信号通道射出第四光信号，所述第二反射棱镜将通过第二半波片偏振旋转后的第四光信号反射到所述第二偏振合束器的第二入射位置，所述第二偏振合束器的射出部分即为第二偏振合束结构的射出部分。The optical wavelength division multiplexer according to claim 2, wherein the second polarization beam combining structure specifically includes a second half-wave plate, a second parallel plate, a second reflecting prism, and a second polarization beam combining structure. A second parallel flat plate is arranged at the first incident position of the second polarization beam combiner, and a second half-wave plate is arranged above or below the second parallel flat plate. The rear part is provided with a second reflecting prism, the second parallel plate is used to receive the third light signal emitted through the third optical signal channel, and the second half-wave plate is used to receive the fourth light emitted through the fourth optical signal channel Signal, the second reflecting prism reflects the fourth optical signal after the polarization rotation of the second half-wave plate to the second incident position of the second polarization beam combiner, and the exit part of the second polarization beam combiner It is the exit part of the second polarization beam combining structure.
  4. 如权利要求3所述的一种光波分复用器，其特征在于：所述第三偏振合束结构具体包括第三半波片、第四半波片、第三反射棱镜、第三偏振合束器，所述第三偏振合束器的第一入射位置设置有第四半波片，沿着所述第四半波片的上方或下方布置有第三半波片，所述第三半波片的后部设置有第三反射棱镜，所述第三半波片、第四半波片分别用于接收通过第一偏振合束结构、第二偏振合束结构合束形成的合束光信号，所述第三反射棱镜将通过第三半波片偏振旋转后的合束光信号反射到所述第三偏振合束器的第二入射位置，所述第三偏振合束器的射出部分即为第三偏振合束结构的射出部分。The optical wavelength division multiplexer according to claim 3, wherein the third polarization beam combining structure specifically includes a third half-wave plate, a fourth half-wave plate, a third reflecting prism, and a third polarization combining structure. A fourth half-wave plate is arranged at the first incident position of the third polarization beam combiner, and a third half-wave plate is arranged above or below the fourth half-wave plate. A third reflecting prism is provided at the rear of the wave plate, and the third half-wave plate and the fourth half-wave plate are respectively used to receive the combined light formed by the first polarization combining structure and the second polarization combining structure. Signal, the third reflecting prism reflects the combined light signal after the polarization rotation of the third half-wave plate to the second incident position of the third polarization beam combiner, and the exit part of the third polarization beam combiner That is the exit part of the third polarization beam combining structure.
  5. 如权利要求3所述的一种光波分复用器，其特征在于：所述第一半波片、第二半波片具体为45°半波片。The optical wavelength division multiplexer according to claim 3, wherein the first half-wave plate and the second half-wave plate are specifically 45° half-wave plates.
  6. 如权利要求4所述的一种光波分复用器，其特征在于：所述第三半波片、第四半波片具体为22.5°半波片，所述第三半波片、第四半波片为不同晶体主截面的半波片。The optical wavelength division multiplexer according to claim 4, wherein the third half-wave plate and the fourth half-wave plate are specifically 22.5° half-wave plates, and the third half-wave plate and the fourth half-wave plate are 22.5° half-wave plates. Half-wave plates are half-wave plates with different main cross-sections of crystals.
  7. 如权利要求1所述的一种光波分复用器，其特征在于：所述起偏器具 体为45°起偏器。The optical wavelength division multiplexer according to claim 1, wherein the polarizer body is a 45° polarizer.
  8. 如权利要求2所述的一种光波分复用器，其特征在于：所述第一半波片、第一平行平板两者沿着一条和光束通道所平行的平面成角的直线上、下位置布置，所述第一半波片的厚度和第一平行平板的厚度相同。The optical wavelength division multiplexer according to claim 2, wherein the first half-wave plate and the first parallel plate are both up and down along a straight line that forms an angle with a plane parallel to the beam channel. Position arrangement, the thickness of the first half-wave plate is the same as the thickness of the first parallel plate.
  9. 如权利要求3所述的一种光波分复用器，其特征在于：所述第二半波片、第二平行平板两者沿着一条和光束通道所平行的平面成角的直线上、下位置布置，所述第二半波片的厚度和第二平行平板的厚度相同。An optical wavelength division multiplexer according to claim 3, characterized in that: the second half-wave plate and the second parallel plate are both up and down along a straight line that forms an angle with a plane parallel to the beam channel. Position arrangement, the thickness of the second half-wave plate is the same as the thickness of the second parallel flat plate.
  10. 如权利要求4所述的一种光波分复用器，其特征在于：所有的光学器件都不平行或垂直于光束通道所平行的平面布置。The optical wavelength division multiplexer according to claim 4, wherein all the optical devices are not arranged in parallel or perpendicular to the plane parallel to the beam channel.
PCT/CN2020/079756 2019-09-12 2020-03-17 Optical wavelength-division multiplexer WO2021047159A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910864123.2A CN110441864A (en) 2019-09-12 2019-09-12 A kind of light wavelength division multiplexing
CN201910864123.2 2019-09-12

Publications (1)

Publication Number Publication Date
WO2021047159A1 true WO2021047159A1 (en) 2021-03-18

Family

ID=68440095

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/079756 WO2021047159A1 (en) 2019-09-12 2020-03-17 Optical wavelength-division multiplexer

Country Status (2)

Country Link
CN (1) CN110441864A (en)
WO (1) WO2021047159A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441864A (en) * 2019-09-12 2019-11-12 亨通洛克利科技有限公司 A kind of light wavelength division multiplexing

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6847786B2 (en) * 1996-10-29 2005-01-25 Ec-Optics Technology, Inc. Compact wavelength filter using optical birefringence and reflective elements
CN203422496U (en) * 2013-09-18 2014-02-05 福州高意通讯有限公司 Transmitter wavelength division multiplexing optical structure and optical transmitter module
CN104991320A (en) * 2015-07-24 2015-10-21 福州百讯光电有限公司 Multi-wavelength single-fiber bidirectional optical transceiver module and working method thereof
CN106646757A (en) * 2017-03-07 2017-05-10 昂纳信息技术（深圳）有限公司 Multiplexer and light-combining method thereof
CN206270601U (en) * 2016-12-15 2017-06-20 广东海信宽带科技有限公司 A kind of multi-wavelength wave multiplexer
CN107611761A (en) * 2017-10-27 2018-01-19 苏州伽蓝致远电子科技股份有限公司 Multi-channel laser device multiplex optical module and device
CN107742820A (en) * 2017-10-27 2018-02-27 苏州伽蓝致远电子科技股份有限公司 Multi-channel laser device multiplex optical module and device based on TAP coated surfaces
CN110441864A (en) * 2019-09-12 2019-11-12 亨通洛克利科技有限公司 A kind of light wavelength division multiplexing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210572867U (en) * 2019-09-12 2020-05-19 亨通洛克利科技有限公司 Optical wavelength division multiplexer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6847786B2 (en) * 1996-10-29 2005-01-25 Ec-Optics Technology, Inc. Compact wavelength filter using optical birefringence and reflective elements
CN203422496U (en) * 2013-09-18 2014-02-05 福州高意通讯有限公司 Transmitter wavelength division multiplexing optical structure and optical transmitter module
CN104991320A (en) * 2015-07-24 2015-10-21 福州百讯光电有限公司 Multi-wavelength single-fiber bidirectional optical transceiver module and working method thereof
CN206270601U (en) * 2016-12-15 2017-06-20 广东海信宽带科技有限公司 A kind of multi-wavelength wave multiplexer
CN106646757A (en) * 2017-03-07 2017-05-10 昂纳信息技术（深圳）有限公司 Multiplexer and light-combining method thereof
CN107611761A (en) * 2017-10-27 2018-01-19 苏州伽蓝致远电子科技股份有限公司 Multi-channel laser device multiplex optical module and device
CN107742820A (en) * 2017-10-27 2018-02-27 苏州伽蓝致远电子科技股份有限公司 Multi-channel laser device multiplex optical module and device based on TAP coated surfaces
CN110441864A (en) * 2019-09-12 2019-11-12 亨通洛克利科技有限公司 A kind of light wavelength division multiplexing

Also Published As

Publication number Publication date
CN110441864A (en) 2019-11-12

Similar Documents

Publication Publication Date Title
WO2017185789A1 (en) Single light-port multi-channel parallel light emission assembly
US9042731B2 (en) Optical module having a plurality of optical sources
WO2016065865A1 (en) Miniature same-wavelength single-core bidirectional optical transceiving module
CN203422496U (en) Transmitter wavelength division multiplexing optical structure and optical transmitter module
US6690513B2 (en) Rhomb interleaver
JP7169708B2 (en) Single core bi-directional optical transceiver assembly
JP5623675B2 (en) Optical signal multiplexing method and optical multiplexing apparatus
CN105891956B (en) Reflective optical circulator array
CN102662215B (en) A kind of wavelength-division multiplex photoelectricity transmitter module
WO2021047159A1 (en) Optical wavelength-division multiplexer
US20120237157A1 (en) Polarization interference optical interleaver
CN210572867U (en) Optical wavelength division multiplexer
CN108132500A (en) A kind of closed loop optical circulator
TWI238269B (en) Fabry-Perot optical filter device
CN109802745B (en) 8-channel wavelength division multiplexing/demultiplexing device for 200G/400G optical transceiver module
CN201359648Y (en) Multi-wavelength selecting switch
JPH0527136A (en) Optical multiplexer/demultiplexer
EP1152265A2 (en) Dispersion free optical filters
JP2004240215A (en) Optical communication device and optical communication system
US6490386B1 (en) Bidirectional optical amplifier
WO2023020288A1 (en) Array-type optical amplification device
JPH0836157A (en) Variable wavelength filter
CN211554380U (en) Wavelength sensitive polarization device and wavelength division multiplexer for multichannel transmitting signals thereof
CN209746185U (en) Three-port optical circulator
US20230266598A1 (en) Optical circulator and optical module

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20862885

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20862885

Country of ref document: EP

Kind code of ref document: A1