应用等效规则优化法设计光通信光栅  

Design of the optical fiber grating with the equivalence rule

作　　者：张善文[1] 潘明忠[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《红外与毫米波学报》2014年第2期158-163,共6页Journal of Infrared and Millimeter Waves

基　　金：国家重大科研装备研制项目(ZBYZ2008-1);吉林省科技发展计划重大专项(20126012);长春市科技计划项目(Y3B43HU140)~~

摘　　要：基于光栅电磁场理论,应用光栅等效规则计算光栅槽形初始值、结合衍射效率等高线法优化设计光栅槽形,给出了具有几何对称中心的任意槽形光栅.以全息工艺上易于制作的正弦、矩形和两种梯形典型槽形光栅为例进行优化设计,结果表明,正弦槽形光栅C波段TM波衍射效率理论峰值为95%,测量值为92%.较互易定理优化方法,等效规则优化法拓宽了光通信光栅的制作方法、降低了制作难度,为全息方法制作光通信光栅提供了理论依据.Based on grating electromagnetic theory, initial values of the grating groove were computed with grating e- quivalence rule. The design was then optimized with the diffraction efficiency contour method. Gratings of arbitrary groove shape with a geometry symmetry center can be designed in this way. As examples, four kinds of groove gratings were designed and fabricated with groove shapes of sine, rectangle and trapeze. The peak efficiency of TM mode for sine groove grating is 95% theoretically and 92% experimentally in C band.

关 键 词：等效规则 WDM 高衍射效率 C波段 全息光栅 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]