声扭波在单模光纤中的应用  

Acoustic Torsional Waves in Single-Mode Optic Fiber

作　　者：吴磊[1] 郑远[1] 濮宏图[1] 陈树强[1] 

机构地区：[1]北京邮电大学光通信中心,北京100876

出　　处：《光电子．激光》2001年第9期979-981,共3页Journal of Optoelectronics·Laser

摘　　要：光纤中的基模 L P0 1 有两种偏振态。通过在沿光纤方向加入声扭波可以引起两个偏振模发生耦合。本文主要介绍了声扭波的振幅和色散关系 ,同时也发现 。In a single mode optical fiber the fundamental LP 01 spatial mode occurs in two polarization modes.Coupling between these polarization modes can be provided by acoustic torsional waves propagating along the fiber.We discuss the amplitude of torsiona waves and dispersion relation.It has also been found that by using higher radial orders of the acoustic torsional modes the coupling efficiency can be increased.

关 键 词：声扭波 单模光纤 偏振模 耦合器 

分 类 号：TN253[电子电信—物理电子学]