非线性包层矩形波导E_(00)~y模的“平台形”场分布  

Platform-Like" Field Distribution of E_(00)~y Mode in A Rectangular Waveguide with Nonlinear Cladding

作　　者：王健[1] 佘守宪[1] 李元潮 

机构地区：[1]北方交通大学理学院,北京100044 [2]北京化工学校,北京100023

出　　处：《北方交通大学学报》2001年第6期10-12,共3页Journal of Northern Jiaotong University

摘　　要：通过对芯区为线性介质、包层为非线性自聚焦Kerr介质的埋入型矩形波导的理论分析和数值计算表明 :当模折射率等于芯区折射率时 ,Ey0 0 模芯区的场呈现等振幅的“平台形”分布而四周包层的场则急剧衰减 ;在模折射率分别小于和大于芯区折射率时 ,Ey0 0 模芯区场分布分别成为上凸和下凹的曲面 .并指出 ,光波导芯区中出现均匀场会在光波导、光电子。It is presented the theoretical analysis and numerical calculations for  E y 00  mode of a buried linear rectangular waveguide with Kerr_Type nonlinear cladding. It is shown that when the modal refractive index N equals to the refractive index of core n f , the core field distribution of  E y 00  mode becomes uniform_'platform_like', while the cladding field reduces rapidly; for N<n f  and N>n f , the field amplitude distribution surfaces become convex and concave respectively. It is notified that the occurrence of uniform core field in a waveguide core may perhaps have prospective application in waveguides, optic_electric and photonic devices.

关 键 词：矩形波导 非线性波导 场分布 均匀芯区场 模折射率 E^y00模 光通信 数值计算 

分 类 号：TN252[电子电信—物理电子学]