Demonstration of a bandwidth-tunable optical passband filter with tunable attenuation  

作　　者：袁志林 李蔚 杨睿 杨柳 王凡 郭金平 唐丽红 胡强高 徐作为 

机构地区：[1]Wuhan National Lab for Optoelectrics, Huazhong University of Science and Technology, Wuhan 430074, China [2]Accelink Technologies Co., Ltd., Wuhan 430205 China

出　　处：《Chinese Optics Letters》2018年第7期15-18,共4页中国光学快报（英文版）

基　　金：supported by the National “863” Program of China(No.2015AA017002)

摘　　要：A bandwidth-tunable optical passband filter with tunable attenuation is proposed. The filter, composed of a transmission liquid crystal array and high-resolution diffraction grating, was successfully demonstrated based on the compact spatial light design. Experimental results showed that the bandwidth, wavelength, and attenuation could be tuned by controlling the voltage applied on the liquid crystal array. The insertion loss was less than 3 dB;the attenuation tuning range was from 0 to 15 dB. The bandwidth tuning range was from 50 to 5000 GHz, which covered the full C band. The filter can meet the technical requirements of colorless-directionless-contentionlessflexible reconfigurable optical add/drop multiplexer.A bandwidth-tunable optical passband filter with tunable attenuation is proposed. The filter, composed of a transmission liquid crystal array and high-resolution diffraction grating, was successfully demonstrated based on the compact spatial light design. Experimental results showed that the bandwidth, wavelength, and attenuation could be tuned by controlling the voltage applied on the liquid crystal array. The insertion loss was less than 3 dB;the attenuation tuning range was from 0 to 15 dB. The bandwidth tuning range was from 50 to 5000 GHz, which covered the full C band. The filter can meet the technical requirements of colorless-directionless-contentionlessflexible reconfigurable optical add/drop multiplexer.

关 键 词：ROADM ECB 

分 类 号：TN713[电子电信—电路与系统]