偏振调制微波光子信号处理
发布时间：2018-11-12 10:10
【摘要】：微波光子信号处理具有带宽大、调谐性好、对电磁干扰不敏感、易于实现并行系统等优点,在过去数十年中受到了学术界的重视。相比于传统的电光相位调制和电光强度调制,偏振调制将待调制信息转换到光的一个二维参量(偏振)上,从而在实现信号处理时可提供更多的自由度和灵活性。在偏振调制器后连接一个检偏器,通过调节检偏器的检偏角去掉偏振调制的一个维度,即可实现相位调制和强度调制,因而任何基于相位调制和强度调制的微波光子信号处理都能基于偏振调制实现。同时,将偏振调制器的输出分成多路,每一个支路上都插入一个检偏器,则基于一个偏振调制器就可同时实现多个调制方式,从而进一步实现并行信号处理或多功能一体信号处理。此外基于单边带偏振调制,可利用非常简单的装置实现幅相无耦合的微波移相器,进而实现相位编码、复抽头系数滤波器、光控相控阵等信号产生或处理功能。本文建立了偏振调制的基本数学模型,并对基于偏振调制的多种微波光子信号处理功能进行了原理分析。
[Abstract]:Microwave photonic signal processing has many advantages, such as large bandwidth, good tuning, insensitivity to electromagnetic interference, easy to realize parallel systems and so on. Compared with the traditional electro-optic phase modulation and electro-optic intensity modulation, polarization modulation converts the information to a two-dimensional parameter (polarization) of light, which can provide more freedom and flexibility in signal processing. A polarizer is connected behind the polarization modulator. By adjusting the detection angle of the polarizer and removing a dimension of the polarization modulation, the phase modulation and the intensity modulation can be realized. Therefore, any microwave photon signal processing based on phase modulation and intensity modulation can be realized based on polarization modulation. At the same time, the output of the polarization modulator is divided into multiple channels, and a polarizer is inserted into each branch, so that multiple modulation modes can be realized simultaneously based on one polarization modulator. Thus, parallel signal processing or multifunctional integrated signal processing can be further realized. In addition, based on the single sideband polarization modulation, a very simple device can be used to realize the amplitude-phase uncoupled microwave phase shifter, thus realizing the signal generation or processing functions such as phase coding, complex tap coefficient filter, optically controlled phased array and so on. In this paper, the basic mathematical model of polarization modulation is established, and the processing function of microwave photon signal based on polarization modulation is analyzed.
【作者单位】： 雷达成像与微波光子技术教育部重点实验室 南京航空航天大学电子信息工程学院;
【基金】：国家自然科学基金优秀青年基金(61422108)资助项目 国家重点基础研究发展计划(“九七三”计划)(2012CB315705)资助项目 江苏省杰出青年基金(BK2012031)资助项目 中央高校基本科研业务费资助项目
【分类号】：TN911.74
本文编号：2326805
[Abstract]:Microwave photonic signal processing has many advantages, such as large bandwidth, good tuning, insensitivity to electromagnetic interference, easy to realize parallel systems and so on. Compared with the traditional electro-optic phase modulation and electro-optic intensity modulation, polarization modulation converts the information to a two-dimensional parameter (polarization) of light, which can provide more freedom and flexibility in signal processing. A polarizer is connected behind the polarization modulator. By adjusting the detection angle of the polarizer and removing a dimension of the polarization modulation, the phase modulation and the intensity modulation can be realized. Therefore, any microwave photon signal processing based on phase modulation and intensity modulation can be realized based on polarization modulation. At the same time, the output of the polarization modulator is divided into multiple channels, and a polarizer is inserted into each branch, so that multiple modulation modes can be realized simultaneously based on one polarization modulator. Thus, parallel signal processing or multifunctional integrated signal processing can be further realized. In addition, based on the single sideband polarization modulation, a very simple device can be used to realize the amplitude-phase uncoupled microwave phase shifter, thus realizing the signal generation or processing functions such as phase coding, complex tap coefficient filter, optically controlled phased array and so on. In this paper, the basic mathematical model of polarization modulation is established, and the processing function of microwave photon signal based on polarization modulation is analyzed.
【作者单位】： 雷达成像与微波光子技术教育部重点实验室 南京航空航天大学电子信息工程学院;
【基金】：国家自然科学基金优秀青年基金(61422108)资助项目 国家重点基础研究发展计划(“九七三”计划)(2012CB315705)资助项目 江苏省杰出青年基金(BK2012031)资助项目 中央高校基本科研业务费资助项目
【分类号】：TN911.74
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