矩形光波导E_(00)~y模衍射特性分析  

Characteristic Analysis on Diffraction of Rectangular Optical Waveguide E_(00)~y Mode

作　　者：林晓明[1] 李连煌[1] 郭福源(指导)[1] 

机构地区：[1]福建师范大学光电与信息工程学院激光与光电子技术研究所,光子技术福建省重点实验室,医学光电科学与技术教育部重点实验室,福建福州350007

出　　处：《光学学报》2014年第5期223-228,共6页Acta Optica Sinica

基　　金：福建省教育厅重点项目(JK2012007)

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。Based on the approximative theory of Marcatili, an approximate mode expression of rectangular opticalwaveguide E00^y mode is presented. Based on the angular spectrum principle of plane wave, the expression ofdiffraction spatial frequency spectra for rectangular optical waveguide E00^y mode is deduced. The distributioncharacteristics of diffraction spatial frequency spectra for rectangular optical waveguide Ego mode in x axis isdiscussed. The beam propagation factors M2 of rectangular optical waveguide Ego mode in x and y axis are analysed.The spatial frequency half width of rectangular optical waveguide EoYo mode is numerically analysed by power in thequadrate bucket, and the curve of rectangular optical waveguideE00^y mode spatial frequency half width defined bypower in the quadrate bucket versus normalized frequency is obtained.

关 键 词：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 

分 类 号：O436.1[机械工程—光学工程] TN252[理学—光学]