基于平行式液晶技术的可变光衰减器  

A Variable Optical Attenuator Based on Parallel-aligned Liquid Crystal Technology

作　　者：葛琦[1] 曾繁清[1] 

机构地区：[1]武汉大学电信学院,湖北武汉430072

出　　处：《半导体光电》2004年第1期32-34,共3页Semiconductor Optoelectronics

摘　　要：　介绍了一种基于液晶技术的可变光衰减器(VOA)的原理,提出了设计方案,并对器件性能进行了测试。结果表明:器件可实现小于1dB的插入损耗,提供0～30dB的动态衰减范围,小于0.1dB的分辨率,响应时间小于50ms。The principle of variable optical attenuators(VOA) based on liquid-crystal is introduced. A design project of the device is proposed and the performance is evaluated. The experimental results show that this attenuator has less than 1 dB fiber-to-fiber insertion loss, with the attenuation range of 0～30 dB, attenuation resolution of 0.1 dB and the responding time of less than 50 ms.

关 键 词：可变光衰减器 液晶 

分 类 号：TN929.11[电子电信—通信与信息系统]