非线性光纤光栅双稳特性研究  

Investigation on the Characteristics of Fiber Gratings Optical Bistable Switching

作　　者：田剑锋[1] 阎元红[1] 

机构地区：[1]太原师范学院物理系,山西太原030031

出　　处：《太原师范学院学报（自然科学版）》2010年第2期74-76,共3页Journal of Taiyuan Normal University:Natural Science Edition

摘　　要：从非线性耦合模理论出发,对非线性光纤光栅双稳特性作了理论研究,并采用数值模拟的方法研究了非线性布喇格光栅双稳态对光栅内部参数的依赖性.结果表明:非线性光纤光栅双稳特性对光栅本身的耦合系数和光栅长度具有一定的依赖性,合理选择光栅的长度和耦合系数可以改善双稳的开关阈值、环的宽度以及开关对比度.Based on the coupled mode theory,the bistability performance of nonlinear bragg gratings is analyzed theoretically,and the dependence of the bistability on the gratings inner parameters is investigated numerically.The results show that,the bistability performance of nonlinear bragg gratings depends on its couple coefficient and grating length.the switching threshold,the central width and switch contrast could be improved through choosing reasonable couple coefficient and grating length.

关 键 词：非线性光纤光栅 光学双稳 耦合系数 光栅长度 

分 类 号：O437[机械工程—光学工程] TN253[理学—光学]