| 共线声光效应中模式转换效率的理论分析 |
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| 引用本文： | 周愚,巫柳,刘永智.共线声光效应中模式转换效率的理论分析[J].电子科技大学学报(社会科学版),2003(3). |
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| 作者姓名： | 周愚 巫柳 刘永智 |
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| 作者单位： | 电子科技大学宽带光纤传输与通信系统技术国家重点实验室 成都610054
(周愚，巫柳)，电子科技大学宽带光纤传输与通信系统技术国家重点实验室 成都610054(刘永智) |
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| 摘 要： | 利用多层结构声表面波的精确模型对决定衍射光栅常数的声表面波传播特性进行了研究,其衍射光栅可使波导中导模向漏模转换,这一现象可用耦合模理论解释。模式转换效率可化作声波频率、声光作用长度、波导厚度和声波功率密度的函数,并利用数值计算得出结果。
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| 关 键 词： | 共线声光效应 模式转换效率 耦合模理论 |
Theory Analysis of Mode Conversion Efficiency in Collinear Acoustooptic Interaction |
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| Zhou Yu,Wu Liu,Liu Yongzhi.Theory Analysis of Mode Conversion Efficiency in Collinear Acoustooptic Interaction[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2003(3). |
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| Authors: | Zhou Yu Wu Liu Liu Yongzhi |
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| Abstract: | The collinear surface acoustic wave properties that determine the induced grating parameters have been investigated using a rigorous modeling of the surface acouseic wave propagation in multiplayer. The guided-to-leaky mode conversion by the induced diffraction grating from surface acouseic wave is analyzed using a generalized multimode formulation of the coupled mode theory. Mode conversion efficiency has been calculated as functions of acoustic frequency, interaction length, guiding layer thickness, and acoustic drive power density. |
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| Keywords: | collinear acoustooptic interaction mode conversion efficiency coupled mode theory |
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