【摘要】：微波光子信號(hào)處理具有帶寬大、調(diào)諧性好、對(duì)電磁干擾不敏感、易于實(shí)現(xiàn)并行系統(tǒng)等優(yōu)點(diǎn),在過(guò)去數(shù)十年中受到了學(xué)術(shù)界的重視。相比于傳統(tǒng)的電光相位調(diào)制和電光強(qiáng)度調(diào)制,偏振調(diào)制將待調(diào)制信息轉(zhuǎn)換到光的一個(gè)二維參量(偏振)上,從而在實(shí)現(xiàn)信號(hào)處理時(shí)可提供更多的自由度和靈活性。在偏振調(diào)制器后連接一個(gè)檢偏器,通過(guò)調(diào)節(jié)檢偏器的檢偏角去掉偏振調(diào)制的一個(gè)維度,即可實(shí)現(xiàn)相位調(diào)制和強(qiáng)度調(diào)制,因而任何基于相位調(diào)制和強(qiáng)度調(diào)制的微波光子信號(hào)處理都能基于偏振調(diào)制實(shí)現(xiàn)。同時(shí),將偏振調(diào)制器的輸出分成多路,每一個(gè)支路上都插入一個(gè)檢偏器,則基于一個(gè)偏振調(diào)制器就可同時(shí)實(shí)現(xiàn)多個(gè)調(diào)制方式,從而進(jìn)一步實(shí)現(xiàn)并行信號(hào)處理或多功能一體信號(hào)處理。此外基于單邊帶偏振調(diào)制,可利用非常簡(jiǎn)單的裝置實(shí)現(xiàn)幅相無(wú)耦合的微波移相器,進(jìn)而實(shí)現(xiàn)相位編碼、復(fù)抽頭系數(shù)濾波器、光控相控陣等信號(hào)產(chǎn)生或處理功能。本文建立了偏振調(diào)制的基本數(shù)學(xué)模型,并對(duì)基于偏振調(diào)制的多種微波光子信號(hào)處理功能進(jìn)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(dá)成像與微波光子技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室 南京航空航天大學(xué)電子信息工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金優(yōu)秀青年基金(61422108)資助項(xiàng)目 國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(“九七三”計(jì)劃)(2012CB315705)資助項(xiàng)目 江蘇省杰出青年基金(BK2012031)資助項(xiàng)目 中央高�；究蒲袠I(yè)務(wù)費(fèi)資助項(xiàng)目
【分類(lèi)號(hào)】：TN911.74

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