CN106950727B - The microwave photon circulator of high-isolation - Google Patents
The microwave photon circulator of high-isolation Download PDFInfo
- Publication number
- CN106950727B CN106950727B CN201710281808.5A CN201710281808A CN106950727B CN 106950727 B CN106950727 B CN 106950727B CN 201710281808 A CN201710281808 A CN 201710281808A CN 106950727 B CN106950727 B CN 106950727B
- Authority
- CN
- China
- Prior art keywords
- microwave
- output end
- port
- circulator
- input terminal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 17
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims description 69
- 239000000758 substrate Substances 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 18
- 238000004891 communication Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000007781 pre-processing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
- G02F1/0316—Electrodes
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
- G02F1/0305—Constructional arrangements
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2203/00—Function characteristic
- G02F2203/50—Phase-only modulation
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
- Optical Integrated Circuits (AREA)
Abstract
本发明公开了一种高隔离度的微波光子环形器，所述微波光子环形器由激光器、铌酸锂单向相位调制器、三端口微波环形器、阻抗匹配单元、相位解调单元、光电探测器和微波放大器组成；本发明的有益技术效果是：提供了一种高隔离度的微波光子环形器，该微波光子环形器可以在较宽的工作带宽条件下获得较高的收发隔离度。
The invention discloses a microwave photonic circulator with high isolation. The microwave photonic circulator consists of a laser, a lithium niobate unidirectional phase modulator, a three-port microwave circulator, an impedance matching unit, a phase demodulation unit, a photoelectric detection The invention is composed of a microwave amplifier and a microwave amplifier; the beneficial technical effect of the present invention is: a microwave photonic circulator with high isolation is provided, and the microwave photonic circulator can obtain higher transceiver isolation under the condition of a wider working bandwidth.
Description
技术领域technical field
本发明涉及一种通信系统收发双工技术，尤其涉及一种高隔离度的微波光子环形器。The invention relates to a communication system transceiver duplex technology, in particular to a microwave photonic circulator with high isolation.
背景技术Background technique
收发双工功能是通信系统的重要功能之一，体现在实际应用中时，即要求通信系统既能将大功率的发射信号馈送至天线向外发送、又能将天线接收到的微弱信号耦合进来；为实现前述目的，就需要相应装置在发射大功率信号的同时，能够不受干扰地对微弱信号进行接收，也即要求通信系统具有较好的收发隔离度，如果收发隔离度不够好，发射的信号串入接收通道中，就可能会增加接收信号的误码率，影响整个通信系统的工作性能。The duplex function of sending and receiving is one of the important functions of the communication system. When it is embodied in practical applications, it is required that the communication system can not only feed the high-power transmission signal to the antenna for transmission, but also couple the weak signal received by the antenna. ; In order to achieve the above-mentioned purpose, it is necessary for the corresponding device to receive the weak signal without interference while transmitting the high-power signal, that is to say, the communication system is required to have a good transceiver isolation. If the transceiver isolation is not good enough, the transmission If the signal is serialized into the receiving channel, it may increase the bit error rate of the received signal and affect the working performance of the entire communication system.
现有技术中，用于实现收发双工功能的装置主要是基于电子技术的微波环形器，这种装置是利用铁氧体旋磁材料制成的，当微波信号通过旋磁材料时，会与旋磁材料中的自旋电子之间有充分的相互作用，在外加偏置磁场的诱导下会出现张量磁导率，从而发生偏振面旋转的现象，产生旋磁效应和各项异性；现有技术条件下制作出的微波环形器的隔离度指标有限，通常在20dB左右，并且现有微波环形器很难在较宽的工作带宽条件下获得较高的收发隔离度指标，无法满足工程界对通信系统日益严苛的应用需求。In the prior art, the device used to realize the duplex function of transmitting and receiving is mainly a microwave circulator based on electronic technology. This device is made of ferrite gyromagnetic material. When the microwave signal passes through the gyromagnetic material, it will interact with There is sufficient interaction between the spin electrons in the gyromagnetic material, and the tensor magnetic permeability will appear under the induction of the external bias magnetic field, so that the polarization plane will rotate, resulting in the gyromagnetic effect and anisotropy; now The isolation index of the microwave circulator produced under the technical conditions is limited, usually around 20dB, and it is difficult for the existing microwave circulator to obtain a high transceiver isolation index under the condition of a wide working bandwidth, which cannot meet the requirements of the engineering community. Increasingly demanding application requirements for communication systems.
发明内容Contents of the invention
针对背景技术中的问题，本发明提出了一种高隔离度的微波光子环形器，其创新在于：所述微波光子环形器由激光器、铌酸锂单向相位调制器、三端口微波环形器、阻抗匹配单元、相位解调单元、光电探测器和微波放大器组成；Aiming at the problems in the background technology, the present invention proposes a high-isolation microwave photonic circulator, the innovation of which is: the microwave photonic circulator is composed of a laser, a lithium niobate unidirectional phase modulator, a three-port microwave Composed of impedance matching unit, phase demodulation unit, photodetector and microwave amplifier;
所述铌酸锂单向相位调制器包括基底、条形波导和行波电极，所述条形波导和行波电极均形成在基底上，条形波导从行波电极上的调制区域穿过；所述行波电极的两个端口分别记为A端口和B端口，其中，A端口和条形波导的输入端均位于基底的左侧，B端口和条形波导的输出端均位于基底的右侧；The lithium niobate unidirectional phase modulator includes a substrate, a strip waveguide and a traveling wave electrode, the strip waveguide and the traveling wave electrode are both formed on the substrate, and the strip waveguide passes through the modulation area on the traveling wave electrode; The two ports of the traveling wave electrode are denoted as A port and B port respectively, wherein, the input ends of the A port and the strip waveguide are located on the left side of the substrate, and the B port and the output ends of the strip waveguide are located on the right side of the substrate. side;
所述激光器的输出端与条形波导的输入端连接，条形波导的输出端与相位解调单元的输入端连接；所述A端口形成微波光子环形器的信号收发端，所述B端口与三端口微波环形器的收发复用端连接；The output end of the laser is connected with the input end of the strip waveguide, and the output end of the strip waveguide is connected with the input end of the phase demodulation unit; the A port forms the signal transceiver end of the microwave photonic circulator, and the B port is connected with the Transmitting and multiplexing end connection of the three-port microwave circulator;
所述相位解调单元的输出端与光电探测器的输入端连接，光电探测器的输出端与微波放大器的输入端连接，微波放大器的输出端形成微波光子环形器的接收信号输出端；The output end of the phase demodulation unit is connected with the input end of the photodetector, the output end of the photodetector is connected with the input end of the microwave amplifier, and the output end of the microwave amplifier forms the receiving signal output end of the microwave photonic circulator;
所述三端口微波环形器的输入端形成微波光子环形器的发射信号输入端，三端口微波环形器的输出端与阻抗匹配单元连接。The input end of the three-port microwave circulator forms the transmission signal input end of the microwave photonic circulator, and the output end of the three-port microwave circulator is connected with the impedance matching unit.
具体使用时，微波光子环形器的信号收发端与天线连接，微波光子环形器的发射信号输入端与前置处理装置连接，微波光子环形器的接收信号输出端与后级处理装置连接；本发明的原理是：During specific use, the signal transceiver end of the microwave photonic circulator is connected to the antenna, the transmitting signal input end of the microwave photonic circulator is connected to the pre-processing device, and the receiving signal output end of the microwave photonic circulator is connected to the post-processing device; the present invention The principle is:
装置工作过程中，激光器为铌酸锂单向相位调制器提供连续的光载波，基于现有理论可知，基于铌酸锂晶体的单向相位调制器能够利用铌酸锂晶体的电光效应，通过向行波电极施加微波信号来对光波导中的光信号的相位进行调制，但这种调制作用只有在微波场传输方向与光波导中光波传输方向相同的条件下才能起效，当微波场传输方向与光波导中光波传输方向相反时，微波场与光场的相速度失配严重，这时微波信号就无法对光波进行有效的调制，前述方案中限定了“A端口和条形波导的输入端均位于基底的左侧，B端口和条形波导的输出端均位于基底的右侧”以及“激光器的输出端与条形波导的输入端连接”，再结合铌酸锂单向相位调制器的典型结构可知，在本发明的铌酸锂单向相位调制器中，微波信号只有从A端口进入时，相应的微波场传输方向才与光波传输方向相同，当微波信号从B端口进入时，相应的微波场传输方向与光波传输方向相反，也即是说，只有从A端口进入的微波信号才能在铌酸锂单向相位调制器中对激光器输出的光载波起到调制作用，从B端口进入的微波信号不能在铌酸锂单向相位调制器中对激光器输出的光载波起到有效的调制作用；During the working process of the device, the laser provides a continuous optical carrier for the lithium niobate unidirectional phase modulator. Based on the existing theory, the unidirectional phase modulator based on the lithium niobate crystal can use the electro-optic effect of the lithium niobate crystal. The traveling wave electrode applies a microwave signal to modulate the phase of the optical signal in the optical waveguide, but this modulation can only take effect under the condition that the microwave field transmission direction is the same as the optical wave transmission direction in the optical waveguide. When the microwave field transmission direction When the transmission direction of the light wave in the optical waveguide is opposite, the phase velocity mismatch between the microwave field and the light field is serious. At this time, the microwave signal cannot effectively modulate the light wave. are located on the left side of the substrate, the B port and the output end of the strip waveguide are located on the right side of the substrate" and "the output end of the laser is connected to the input end of the strip waveguide", combined with the lithium niobate unidirectional phase modulator It can be seen from the typical structure that in the lithium niobate unidirectional phase modulator of the present invention, only when the microwave signal enters from the A port, the corresponding microwave field transmission direction is the same as the light wave transmission direction, and when the microwave signal enters from the B port, the corresponding The transmission direction of the microwave field is opposite to the transmission direction of the light wave, that is to say, only the microwave signal entering from the A port can modulate the optical carrier output by the laser in the lithium niobate unidirectional phase modulator, and enter from the B port The microwave signal cannot effectively modulate the optical carrier output by the laser in the lithium niobate unidirectional phase modulator;
工作过程中，当需要向外发送信号时，由前置处理装置生成的发射信号通过发射信号输入端进入微波光子环形器中的三端口微波环形器，三端口微波环形器将发射信号传输至B端口，发射信号经行波电极传输后通过信号收发端（即A端口）输出至天线并向外发送，在此过程中，发射信号不会对光波起到调制作用；接收信号时，天线接收到的微弱信号通过信号收发端（即A端口）进入行波电极，进入到行波电极的微弱信号就会对光载波起到调制作用，从而使条形波导的输出端能够输出调制后的光信号，相位解调单元对条形波导输出的光信号进行解调处理，然后由光电探测器和微波放大器进行光电转换和放大处理，最后传输给后级处理装置进行处理；During the working process, when a signal needs to be sent out, the transmission signal generated by the pre-processing device enters the three-port microwave circulator in the microwave photonic circulator through the transmission signal input port, and the three-port microwave circulator transmits the transmission signal to B Port, after the transmission signal is transmitted by the traveling wave electrode, it is output to the antenna through the signal transceiver terminal (namely A port) and sent out. During this process, the transmission signal will not modulate the light wave; when receiving the signal, the antenna receives The weak signal enters the traveling-wave electrode through the signal transceiver end (namely A port), and the weak signal entering the traveling-wave electrode will modulate the optical carrier, so that the output end of the strip waveguide can output the modulated optical signal , the phase demodulation unit demodulates the optical signal output by the strip waveguide, then performs photoelectric conversion and amplification processing by the photodetector and microwave amplifier, and finally transmits it to the post-processing device for processing;
本发明中的三端口微波环形器为背景技术中所述的传统微波环形器，其作用是用于连接阻抗匹配单元和B端口以及用于连接B端口和前置处理装置，这种三端口微波环形器的收发隔离度较差，但由于铌酸锂单向相位调制器的单向调制特性，在向外发送信号时，进入三端口微波环形器的发射信号只会串扰到阻抗匹配单元上，不会对光载波造成影响；当接收信号时，接收到的微弱信号会通过三端口微波环形器进入到阻抗匹配单元中，阻抗匹配单元就能根据微弱信号自适应地进行阻抗匹配。The three-port microwave circulator in the present invention is the traditional microwave circulator described in the background art, and its role is to connect the impedance matching unit and the B port and to connect the B port and the pre-processing device. This three-port microwave The transmit-receive isolation of the circulator is poor, but due to the unidirectional modulation characteristic of the lithium niobate unidirectional phase modulator, when the signal is sent out, the transmitted signal entering the three-port microwave circulator will only crosstalk to the impedance matching unit. It will not affect the optical carrier; when the signal is received, the received weak signal will enter the impedance matching unit through the three-port microwave circulator, and the impedance matching unit can adaptively perform impedance matching according to the weak signal.
为提高接收链路的线性度，本发明还提出了如下的优选方案：所述相位解调单元由光分路器、第一光滤波器和第二光滤波器组成；所述光分路器为单输入双输出模式，光分路器的两个输出端的分光比为1比1；条形波导的输出端与光分路器的输入端连接，光分路器的其中一个输出端与第一光滤波器的输入端连接，光分路器的另一个输出端与第二光滤波器的输入端连接；所述第一光滤波器和第二光滤波器中的一者能对输入的光信号进行正斜率的线性滤波处理，另一者能对输入的光信号进行负斜率的线性滤波处理；所述光电探测器采用双输入单输出的平衡探测器，第一光滤波器的输出端与平衡探测器的其中一个输入端连接，第二光滤波器的输出端与平衡探测器的另一个输入端连接，平衡探测器的输出端与微波放大器的输入端连接。光电探测器采用平衡探测器后，可以较好地抑制输出信号的共模噪声。In order to improve the linearity of the receiving link, the present invention also proposes the following preferred solution: the phase demodulation unit is composed of an optical splitter, a first optical filter and a second optical filter; the optical splitter It is a single-input double-output mode, and the splitting ratio of the two output ends of the optical splitter is 1:1; the output end of the strip waveguide is connected to the input end of the optical splitter, and one of the output ends of the optical splitter is connected to the second The input end of an optical filter is connected, and the other output end of the optical splitter is connected with the input end of the second optical filter; one of the first optical filter and the second optical filter can input the The optical signal is processed by linear filtering with positive slope, and the other can perform linear filtering processing with negative slope on the input optical signal; the photodetector adopts a balanced detector with dual input and single output, and the output end of the first optical filter It is connected with one input end of the balanced detector, the output end of the second optical filter is connected with the other input end of the balanced detector, and the output end of the balanced detector is connected with the input end of the microwave amplifier. After the photodetector adopts a balanced detector, the common mode noise of the output signal can be suppressed well.
优选地，所述第一光滤波器和第二光滤波器均由多个延时干涉仪级联而成，各个延时干涉仪的分光比各不相同。Preferably, both the first optical filter and the second optical filter are formed by cascading a plurality of time-delay interferometers, and the splitting ratios of each time-delay interferometer are different.
本发明的有益技术效果是：提供了一种高隔离度的微波光子环形器，该微波光子环形器可以在较宽的工作带宽条件下获得较高的收发隔离度。The beneficial technical effect of the present invention is to provide a high-isolation microwave photonic circulator, which can obtain higher transceiver isolation under the condition of a wider working bandwidth.
附图说明Description of drawings
图1、本发明及外围装置的连接关系示意图；Fig. 1, the schematic diagram of the connection relationship of the present invention and peripheral devices;
图2、相位解调单元的优选实施方案结构示意图；Fig. 2, a schematic structural diagram of a preferred embodiment of a phase demodulation unit;
图中各个标记所对应的名称分别为：激光器1、铌酸锂单向相位调制器2、三端口微波环形器3、阻抗匹配单元4、相位解调单元5、光分路器5-1、第一光滤波器5-2、第二光滤波器5-3、光电探测器6、微波放大器7、前置处理装置8、后级处理装置9、天线10、A端口A、B端口B。The names corresponding to each mark in the figure are: laser 1, lithium niobate unidirectional phase modulator 2, three-port microwave circulator 3, impedance matching unit 4, phase demodulation unit 5, optical splitter 5-1, First optical filter 5-2, second optical filter 5-3, photodetector 6, microwave amplifier 7, pre-processing device 8, post-processing device 9, antenna 10, A port A, B port B.
具体实施方式Detailed ways
一种高隔离度的微波光子环形器，其创新在于：所述微波光子环形器由激光器1、铌酸锂单向相位调制器2、三端口微波环形器3、阻抗匹配单元4、相位解调单元5、光电探测器6和微波放大器7组成；A high-isolation microwave photonic circulator, the innovation of which is: the microwave photonic circulator is composed of a laser 1, a lithium niobate unidirectional phase modulator 2, a three-port microwave circulator 3, an impedance matching unit 4, and a phase demodulator Composed of unit 5, photodetector 6 and microwave amplifier 7;
所述铌酸锂单向相位调制器2包括基底、条形波导和行波电极，所述条形波导和行波电极均形成在基底上，条形波导从行波电极上的调制区域穿过；所述行波电极的两个端口分别记为A端口和B端口，其中，A端口和条形波导的输入端均位于基底的左侧，B端口和条形波导的输出端均位于基底的右侧；The lithium niobate unidirectional phase modulator 2 includes a substrate, a strip waveguide and a traveling wave electrode, the strip waveguide and the traveling wave electrode are both formed on the substrate, and the strip waveguide passes through the modulation area on the traveling wave electrode ; The two ports of the traveling wave electrode are respectively marked as A port and B port, wherein, the input ends of the A port and the strip waveguide are all located on the left side of the substrate, and the output ends of the B port and the strip waveguide are all located at the bottom of the substrate. Right;
所述激光器1的输出端与条形波导的输入端连接，条形波导的输出端与相位解调单元5的输入端连接；所述A端口形成微波光子环形器的信号收发端，所述B端口与三端口微波环形器3的收发复用端连接；The output end of the laser 1 is connected with the input end of the strip waveguide, and the output end of the strip waveguide is connected with the input end of the phase demodulation unit 5; the A port forms the signal transceiver end of the microwave photonic circulator, and the B The port is connected to the transceiver multiplexing end of the three-port microwave circulator 3;
所述相位解调单元5的输出端与光电探测器6的输入端连接，光电探测器6的输出端与微波放大器7的输入端连接，微波放大器7的输出端形成微波光子环形器的接收信号输出端；The output end of described phase demodulation unit 5 is connected with the input end of photodetector 6, and the output end of photodetector 6 is connected with the input end of microwave amplifier 7, and the output end of microwave amplifier 7 forms the receiving signal of microwave photon circulator output terminal;
所述三端口微波环形器3的输入端形成微波光子环形器的发射信号输入端，三端口微波环形器3的输出端与阻抗匹配单元4连接。The input end of the three-port microwave circulator 3 forms the transmission signal input end of the microwave photonic circulator, and the output end of the three-port microwave circulator 3 is connected to the impedance matching unit 4 .
进一步地，所述相位解调单元5由光分路器5-1、第一光滤波器5-2和第二光滤波器5-3组成；所述光分路器5-1为单输入双输出模式，光分路器5-1的两个输出端的分光比为1比1；条形波导的输出端与光分路器5-1的输入端连接，光分路器5-1的其中一个输出端与第一光滤波器5-2的输入端连接，光分路器5-1的另一个输出端与第二光滤波器5-3的输入端连接；所述第一光滤波器5-2和第二光滤波器5-3中的一者能对输入的光信号进行正斜率的线性滤波处理，另一者能对输入的光信号进行负斜率的线性滤波处理；Further, the phase demodulation unit 5 is composed of an optical splitter 5-1, a first optical filter 5-2 and a second optical filter 5-3; the optical splitter 5-1 is a single input In dual output mode, the light splitting ratio of the two output ends of the optical splitter 5-1 is 1:1; the output end of the strip waveguide is connected with the input end of the optical splitter 5-1, and the optical splitter 5-1 One of the output ends is connected with the input end of the first optical filter 5-2, and the other output end of the optical splitter 5-1 is connected with the input end of the second optical filter 5-3; the first optical filter One of the device 5-2 and the second optical filter 5-3 can perform positive-slope linear filter processing on the input optical signal, and the other can perform negative-slope linear filter processing on the input optical signal;
所述光电探测器6采用双输入单输出的平衡探测器，第一光滤波器5-2的输出端与平衡探测器的其中一个输入端连接，第二光滤波器5-3的输出端与平衡探测器的另一个输入端连接，平衡探测器的输出端与微波放大器7的输入端连接。The photodetector 6 adopts a dual-input and single-output balanced detector, the output end of the first optical filter 5-2 is connected to one of the input ends of the balanced detector, and the output end of the second optical filter 5-3 is connected to the input end of the balanced detector. The other input end of the balanced detector is connected, and the output end of the balanced detector is connected with the input end of the microwave amplifier 7 .
进一步地，所述第一光滤波器5-2和第二光滤波器5-3均由多个延时干涉仪级联而成，各个延时干涉仪的分光比各不相同。Further, the first optical filter 5-2 and the second optical filter 5-3 are formed by cascading a plurality of delay interferometers, and the splitting ratios of each delay interferometer are different.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710281808.5A CN106950727B (en) | 2017-04-26 | 2017-04-26 | The microwave photon circulator of high-isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710281808.5A CN106950727B (en) | 2017-04-26 | 2017-04-26 | The microwave photon circulator of high-isolation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106950727A CN106950727A (en) | 2017-07-14 |
| CN106950727B true CN106950727B (en) | 2019-09-10 |
Family
ID=59477478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710281808.5A Active CN106950727B (en) | 2017-04-26 | 2017-04-26 | The microwave photon circulator of high-isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106950727B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278941A (en) * | 2013-06-14 | 2013-09-04 | 哈尔滨工业大学 | Microwave photonic filter based on stimulated Brillouin scattering dynamic grating, and filtering method thereof |
| CN105607302A (en) * | 2016-03-21 | 2016-05-25 | 中国科学院半导体研究所 | Tunable single-passband microwave photonic filter based on Brillouin optical carrier recovery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9543627B2 (en) * | 2013-11-19 | 2017-01-10 | Electronics And Telecommunications Research Institute | Microwave device using magnetic material nano wire array and manufacturing method thereof |
-
2017
- 2017-04-26 CN CN201710281808.5A patent/CN106950727B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278941A (en) * | 2013-06-14 | 2013-09-04 | 哈尔滨工业大学 | Microwave photonic filter based on stimulated Brillouin scattering dynamic grating, and filtering method thereof |
| CN105607302A (en) * | 2016-03-21 | 2016-05-25 | 中国科学院半导体研究所 | Tunable single-passband microwave photonic filter based on Brillouin optical carrier recovery |
Non-Patent Citations (3)
| Title |
|---|
| Circulators for Microwave and Millimeter-Wave Integrated Circuits;ERNST F.SCHLOEMANN;《PROCEEDINGS OF THE IEEE》;19880201;全文 |
| Feedforward Embedding Circulator Enhancement in Transmit/Receive Applications;S.L.Karode and V.F.Fusco;《IEEE MICROWAVE AND GUIDED WAVE LETTERS》;19980101;全文 |
| On-Chip Superconducting Microwave Circulator from Synthetic Rotation;Joseph Kerckhoff等;《PHYSICAL REVIEW APPLIED》;20150910;全文 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106950727A (en) | 2017-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108667517B (en) | A microwave photonic mixing method and system based on local oscillator frequency doubling | |
| CN105978631B (en) | A kind of photon microwave self-interference signal eliminating apparatus and method | |
| US7561803B2 (en) | Bi-directional signal interface using photonic coupler | |
| CN107196713B (en) | An Optical Receiver Based on Optical Signal Delay | |
| CN107340666B (en) | A Vector Signal Up-conversion Device Based on Photoelectric Oscillator | |
| CN110231719A (en) | A kind of electrooptic modulator | |
| CN109194410B (en) | Radio frequency signal sensing device based on photoelectric oscillator | |
| CN108494498A (en) | A kind of adaptive anti-multichannel interference photon radio-frequency receiving front-end and method | |
| US20220026520A1 (en) | Optical-electronic integrated rf leakage interference cancellation system and method for cw radar | |
| CN105390783A (en) | Image frequency rejection frequency mixer structure for terahertz wave band | |
| CN103684613A (en) | Photonic microwave frequency mixing method and device | |
| CN102983911B (en) | A kind of based on the utilization of full spectrum and the microwave photon link method of post-compensation technology | |
| CN111756451B (en) | A four-channel indium phosphide optical I/Q zero-IF channelized receiver chip | |
| CN113315573A (en) | Optical auxiliary broadband microwave instantaneous frequency measurement method and device | |
| CN107994947A (en) | The round-trip frequency conversion type optical fiber high accuracy Frequency Transfer system and method for S types | |
| CN107256863A (en) | A kind of single chip integrated photoelectric chip | |
| US9166678B1 (en) | Heterogeneous microwave photonic circuits | |
| CN106950727B (en) | The microwave photon circulator of high-isolation | |
| Ackerman et al. | Broadband simultaneous transmit and receive from a single antenna using improved photonic architecture | |
| WO2021168868A1 (en) | Optical signal copying apparatus | |
| CN108631877A (en) | Single-side belt electro-optic modulation arrangement | |
| CN108832238B (en) | Ultra-high-Q Single-Pass Band Microwave Photonic Filter | |
| CN102566194A (en) | Broadband wavelength converter based on high-nonlinearity flattened-dispersion optical fibers and converting method of broadband wavelength converter | |
| CN114614905B (en) | Multi-octave bandwidth MPL linearized acquisition and receiver chip based on spectral shaping | |
| US20240080100A1 (en) | Broadband radio frquency signal optical fiber phase-stable transmission system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |