| 声光频谱分析器的衍射理论解析 |
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| 引用本文： | 周涛,陈吉欣,黄禾,周洋舟. 声光频谱分析器的衍射理论解析[J]. 半导体光电, 2010, 31(4) |
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| 作者姓名： | 周涛 陈吉欣 黄禾 周洋舟 |
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| 作者单位： | 信息综合控制国家重点实验室,成都,610036;信息综合控制国家重点实验室,成都,610036;信息综合控制国家重点实验室,成都,610036 |
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| 摘 要： | 用波动光学方法和衍射原理对声光频谱分析器的工作原理进行了理论建模,阐明了声光相互作用的本质是声场对光场的动态调制与波前改变的过程.在此基础上,分析了声光频谱分析器中信号的幅频相特征在微波-声波-光波间的传递关系,并将该理论用于解释声光频谱分析器为何不能获得信号相位和复功率谱的原因,最后还给出了提取信号相位的方法.
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| 关 键 词： | 声光 光学衍射 信号处理 |
Analysis of Acoustic-optical Spectrum Processor by Wave-optics and Diffraction Theory |
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| ZHOU Tao,CHEN Jixin,HUANG He,ZHOU Yangzhou. Analysis of Acoustic-optical Spectrum Processor by Wave-optics and Diffraction Theory[J]. Semiconductor Optoelectronics, 2010, 31(4) |
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| Authors: | ZHOU Tao CHEN Jixin HUANG He ZHOU Yangzhou |
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| Affiliation: | ZHOU Tao1,CHEN Jixin1,HUANG He1,ZHOU Yangzhou2(1.National Information Control Laboratory,Chengdu 610036,CHN,2.Sichuan Institute of Piezoelectronic and Acoustooptic Technology,Chongqing 400060CHN) |
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| Abstract: | The operating principles of acoustic-optical spectrum processor are described by wave-optics and diffraction theory.The theory can finely explain the acoustic-optic interactivity which is a process that acoustic-wave dynamically modulates optic-wave and changes its wavefrond.Therefore,a transfer function of signal characters between the microwave,acoustic-wave and optic-wave was obtained and used to explain why the acoustic-optical spectrum processor can not get the signal phase and complex spectrum.Finally... |
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| Keywords: | acousto-optic optical-diffraction signal processing |
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