双平板波导耦合器偏振特性研究  

Research on olarization properties of twin slab waveguides coupler

作　　者：骆意[1] 缪庆元[1] 何平安[1] 王宝龙[1] 何秀贞[1] 

机构地区：[1]武汉大学电子信息学院,武汉430072

出　　处：《光通信技术》2016年第2期40-42,共3页Optical Communication Technology

基　　金：国家自然科学基金(60877039)资助

摘　　要：分析了TE、TM模耦合差异、单波导光学限制因子随双平板波导耦合器相对折射率差的变化特性。进一步分析了耦合器偏振无关和偏振分离时,耦合差异受波导间距和波导宽度变化的影响,波导间距在一定范围内变化对耦合差异影响较小;波导宽度变化对耦合差异的影响在耦合器偏振无关时视相对折射率差的大小而定,在偏振分离时较大。The paper studied the variation of coupling differences between TE and TM mode and optical confinement factors versus the relative refractive index difference of twin slab waveguides coupler. The variation of polarization independent and polarization separation coupling differences with the change of waveguide spacing and waveguide width is further discussed. The influence ofwaveguide spacing on coupling differences is small; in case of polarization independent the influence of waveguide width on coupling differences depends on the relative refractive index difference, in case of polarization separation the result is large.

关 键 词：双平板波导耦合器 相对折射率差 偏振无关 偏振分离 

分 类 号：TN913.7[电子电信—通信与信息系统]