双折射晶体时域电光综合器  

Synthesizer of Electro-Optical Birefringent System in Time Domain

作　　者：王吉明[1] 刘立人[1] 刘德安[1] 赵栋[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《光学学报》2006年第2期283-289,共7页Acta Optica Sinica

基　　金：国家自然科学基金(60177016);国家科技部重大基础研究专项基金(2002CCA03500)资助课题

摘　　要：提出了一种利用电光双折射网络实现的光波波形综合器。该综合器由偏振器、多块具有电光效应的双折射晶体和补偿器组成,输入余弦信号,组成一多级电光双折射网络。利用琼斯理论对该综合器进行了理论分析,根据扩展傅里叶级数系数正向对比法,实现了其他类型的周期性时域波形。给出一类三元综合器的分析与设计方法,得到合成矩形波与三角波所需的多组结构参量,并对输入信号误差及方位角误差对波形的影响进行了分析。A synthesizer for waveform generation utilizing electro-optical birefringent networks is described, which consists of two polarizers, electro-optical elements and phase compensators. When a cosine function voltage is applied on the electro-optical crystals, this system acts as a multiple electro-optical birefringent network for synthesis of time domain waveform. Analysis in time domain based on Jones matrix theory is given for the synthesizer. The algorithm comparing of Fourier series coefficients in positive-direction is used to design the synthesizer producing other types of periodical waveforms in time domain, A kind of three-stage synthesizer is elaborated as an example and multiple structural parameters have been obtained for rectangular and triangular waveforms, The factors influencing the waveform, including the input signal error and the azimuth angle are also discussed.

关 键 词：光电子学 电光综合器 偏振干涉 扩展傅里叶级数系数对比法 波形 

分 类 号：O436[机械工程—光学工程]