光纤S型环形腔的非互易性分析  

Non-reciprocity Analysis of an Optical Fiber S-Shaped Resonator

作　　者：罗家童[1] 钱景仁[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,合肥230026

出　　处：《中国科学技术大学学报》2003年第2期204-208,共5页JUSTC

基　　金：国家自然科学基金 (No :6 0 1770 2 4 )资助项目

摘　　要：用功能块模型的方法详细分析了由于转动而引起的萨格纳克 (Sagnac)非互易效应对光纤S型环形腔输出频谱特性的影响 .光纤S型环形腔在一定的条件下具有双峰结构 ,由于转动而产生的非互易效应 ,会使双峰的间距发生变化 ,间距的大小与转速近似成正比 .The non-reciprocity characteristics of an optical fiber S-shaped resonator are analyzed theoretically using functional block diagram method. The ranges of the two couplers' beam splitter ratio under the second resonance condition are attained, while two peaks of the output spectrum exist. Under this condition, the space of the two peaks will be changed due to rotation and the beat frequency of the two peaks of the S-shaped resonator is nearly proportional to rotation rate. Using this characteristic, fiber optic non-reciprocity effect can be easily measured. The characteristics of an optical fiber gyroscope based on an S-shaped resonator are also discussed.

关 键 词：光纤S型环形腔 Sagnac非互易效应 输出频谱 双峰结构 拍频 功能块模型 

分 类 号：TN253[电子电信—物理电子学]