【作者】 李锡华； 金宁； 葛陆泉； 周强； 江晓清； 杨建义； 王明华；

【Author】 LI Xihua~1,JIN Ning~2,GE Luquan~1,ZHOU Qiang~1, JIANG Xiaoqing~1,YANG Jianyi~1,WANG Minghua~1 1 Department of Information and Electronic Engineering,Zhejiang University,Hangzhou 310027; 2 College of Information Engineering,China Jiliang University,Hangzhou 310018

【机构】 浙江大学信息与电子工程学系； 中国计量学院信息分院；

【摘要】 本文提出了一种基于铌酸锂材料的电光型可变衰减器(Variable Optical Attenuator,VOA)的设计,其原理是利用S弯曲波导的辐射损耗提高衰减效率。BPM法计算结果显示,附加的插入损耗小于1. 2dB,当施加电压为-10V时,衰减可达30dB以上,并且具有尺寸小,制作简单等特性。依据这种设计制作的可变衰减器,当施加电压为-18.5V时,衰减量可以达到27dB左右。更多还原

【Abstract】 A novel design of a variable optical attenuator based on Ti:LiNbO₃ is proposed.The attenuation effect is improved with the help of radiation loss of S-bend optical waveguide.According to the simulation of BPM,the insertion loss is less than 1.2dB,whereas,the attenuation can be over 30dB when a voltage-10v is applied,At the same time,the attenuator has the advantage of small size and easy making.According to the experiment result,the attenuation can be as low as 27dB when a voltage -18.5V is applied.更多还原