基于内反射效应的可变光学衰减器  

A Variable Optical Attenuator Based on Internal Reflection

作　　者：刘志强[1] 曹庄琪[1] 沈启舜[1] 

机构地区：[1]上海交通大学物理系导波光电子实验室,上海200240

出　　处：《光学学报》2003年第7期870-873,共4页Acta Optica Sinica

基　　金：上海市科学技术委员会资助项目 (0 1 2 2 62 0 2 1 )

摘　　要：提出一种基于内反射原理的可变光学衰减器 ,这种利用一加长的棱镜和涂于棱镜上下两底面的SiO2 薄膜的简单结构 。A variable optical attenuator (VOA) based on the internal reflection effect is proposed. This simple configuration makes use of an enlongated prism with SiO 2 thin film on both underside of it to realize polarization insensitivity and large range of dynamic attenuation. As a result, a sample VOA was obtained with an attenuation range above 20 dB and polarization dependent loss below 0.5 dB experimentally.

关 键 词：内反射效应 可变光学衰减器 密集波分复用系统 光通信 溶胶-凝胶法 偏振相关损耗 

分 类 号：TH744[机械工程—光学工程] TN929.1[机械工程—仪器科学与技术]