光学学报, 2014, 34 (5): 0526001, 网络出版: 2014-04-18
矩形光波导Ey00模衍射特性分析
Characteristic Analysis on Diffraction of Rectangular Optical Waveguide Ey00 Mode
物理光学 衍射 矩形光波导 空间频谱 光束传输因子 桶中功率 physical optics diffraction rectangular optical waveguide spatial frequency spectrum beam propagation factor power in the bucket
摘要
基于Marcatili近似理论，给出了一种矩形光波导Ey00模模场的近似表达，根据平面波角谱理论，推导出了矩形光波导Ey00模衍射场的空间频谱表达式，探讨了其x轴方向上的空间频谱分布特性，分析了矩形光波导Ey00模在x，y轴方向上的光传输因子M2，并采用方形桶桶中功率对矩形波导Ey00模空间频率半宽度进行数值分析，得到了由方形桶桶中功率定义的矩形光波导Ey00模空间频率半宽度随归一化频率变化的关系曲线。
Abstract
Based on the approximative theory of Marcatili, an approximate mode expression of rectangular optical waveguide Ey00 mode is presented. Based on the angular spectrum principle of plane wave, the expression of diffraction spatial frequency spectra for rectangular optical waveguide Ey00 mode is deduced. The distribution characteristics of diffraction spatial frequency spectra for rectangular optical waveguide Ey00 mode in x axis is discussed. The beam propagation factors M2 of rectangular optical waveguide Ey00 mode in x and y axis are analysed. The spatial frequency half width of rectangular optical waveguide Ey00 mode is numerically analysed by power in the quadrate bucket, and the curve of rectangular optical waveguide Ey00 mode spatial frequency half width defined by power in the quadrate bucket versus normalized frequency is obtained.
林晓明, 李连煌, 郭福源. 矩形光波导Ey00模衍射特性分析[J]. 光学学报, 2014, 34(5): 0526001. Lin Xiaoming, Li Lianhuang, Guo Fuyuan. Characteristic Analysis on Diffraction of Rectangular Optical Waveguide Ey00 Mode[J]. Acta Optica Sinica, 2014, 34(5): 0526001.
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