新型长周期光纤光栅的横向负载特性及其偏振相关性研究  

Study on Transverse-load Characteristics and Polarization Dependence of Novel Long Period Fiber Gratings

作　　者：王义平[1] 饶云江[2] 

机构地区：[1]上海交通大学区域光纤通信网与新型光通信系统国家重点实验室,上海200030 [2]重庆大学光电工程学院,重庆400030

出　　处：《光子学报》2005年第8期1195-1200,共6页Acta Photonica Sinica

基　　金：国家杰出青年科学基金(No.60025515);中国博士后科学基金(No.2003034258)资助项目

摘　　要：发现高频CO2激光脉冲写入的长周期光纤光栅谐振波长的横向负载特性具有较强的负载方向相关性,而损耗峰幅值的横向负载特性的方向相关性较弱.不同圆周方向的横向负载对谐振波长偏振相关性的影响差异较大,但对损耗峰幅值偏振相关性的影响差异较小.利用横向负载引起双折射进而导致光栅的光学主轴旋转的相关理论,合理解释了该长周期光纤光栅独特的横向负载特性及其偏振相关性.It is demonstrated that the transverse-load characteristic of the resonant wavelength for LPFGs induced by high-frequency CO2 laser pulses depends strongly on the load-direction, whereas the transverse- load characteristics of the loss peak amplitude is independent on the load-direction. The polarization dependence of the resonant wavelength for the LPFGs is deeply affected by the transverse-load, and the affection depends on load direction, whereas, the polarization dependence of the loss peak amplitude is little affected by the transverse-load. The transverse-load resulted in the optical-axis of the LPFG rotating. The unique transverse-load characteristics of the novel LPFG are analyzed using the theories about the optical-axis rotation, resulting from the load-induced birefringence, of the LPFG.

关 键 词：光通信器件 长周期光纤光栅 光纤布喇格光栅 CO2激光 偏振相关性 横向负载 

分 类 号：TN253[电子电信—物理电子学]