偏振調制微波光子信號處理
發(fā)布時間:2018-11-12 10:10
【摘要】:微波光子信號處理具有帶寬大、調諧性好、對電磁干擾不敏感、易于實現并行系統(tǒng)等優(yōu)點,在過去數十年中受到了學術界的重視。相比于傳統(tǒng)的電光相位調制和電光強度調制,偏振調制將待調制信息轉換到光的一個二維參量(偏振)上,從而在實現信號處理時可提供更多的自由度和靈活性。在偏振調制器后連接一個檢偏器,通過調節(jié)檢偏器的檢偏角去掉偏振調制的一個維度,即可實現相位調制和強度調制,因而任何基于相位調制和強度調制的微波光子信號處理都能基于偏振調制實現。同時,將偏振調制器的輸出分成多路,每一個支路上都插入一個檢偏器,則基于一個偏振調制器就可同時實現多個調制方式,從而進一步實現并行信號處理或多功能一體信號處理。此外基于單邊帶偏振調制,可利用非常簡單的裝置實現幅相無耦合的微波移相器,進而實現相位編碼、復抽頭系數濾波器、光控相控陣等信號產生或處理功能。本文建立了偏振調制的基本數學模型,并對基于偏振調制的多種微波光子信號處理功能進行了原理分析。
[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.
【作者單位】: 雷達成像與微波光子技術教育部重點實驗室 南京航空航天大學電子信息工程學院;
【基金】:國家自然科學基金優(yōu)秀青年基金(61422108)資助項目 國家重點基礎研究發(fā)展計劃(“九七三”計劃)(2012CB315705)資助項目 江蘇省杰出青年基金(BK2012031)資助項目 中央高;究蒲袠I(yè)務費資助項目
【分類號】:TN911.74
本文編號: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.
【作者單位】: 雷達成像與微波光子技術教育部重點實驗室 南京航空航天大學電子信息工程學院;
【基金】:國家自然科學基金優(yōu)秀青年基金(61422108)資助項目 國家重點基礎研究發(fā)展計劃(“九七三”計劃)(2012CB315705)資助項目 江蘇省杰出青年基金(BK2012031)資助項目 中央高;究蒲袠I(yè)務費資助項目
【分類號】:TN911.74
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