用于光接收系统的超窄带光纤光栅滤光器的设计  

The Designing of Ultra-narrow Bandwidth FBG Filters in Optical Receiving System

作　　者：王昆[1] 张德琨[1] 萧泽新[1] 敖君[1] 

机构地区：[1]桂林电子工业学院通信与信息工程系,广西桂林541004

出　　处：《桂林电子工业学院学报》2002年第6期19-22,共4页Journal of Guilin Institute of Electronic Technology

摘　　要：对比于常用的原子共振滤光器和干涉滤光片,提出了一种基于光纤Bragg光栅(FBG)的用于空间光接收系统的新的滤光方案,采用耦合模理论分析了FBG的传输特性,用龙格-库塔法对光纤光栅进行了计算机数值仿真,重点设计了工作在短波长(532nm)的超窄带光纤光栅滤光器,对其光谱特性进行了优化,获得了很窄的带宽(0.01nm)、很高的峰值反射率(接近100%)和光滑、抑制边带的反射谱。In light of an atomic resonant filter and an interferential filter,light filtering scheme based on fiber Bragg grating(FBG) is presented.It will be used in wireless optical receiving system. The transmission characteristics of FBG are analyzed in the coupled mode theory and the reflectivity spectra of FBG are simulated with Rungekutta method.Special efforts are made in disigning the FBG with short Bragg wavelength,the ultranarrow reflection bandwidth(0.01nm),high reflectivity(nearly 100%) and restrained side lobe.

关 键 词：光接收系统 超窄带 光纤 光栅 滤光器 光纤通信 耦合模理论 切趾 

分 类 号：TN929.1[电子电信—通信与信息系统]