基于二氧化硅平面光波导的强度均衡的光脉冲对的产生（英文）  

Generation of an intensity-balanced optical pulse couple based on silica planar lightwave circuit

作　　者：任梅珍[1,2] 李骁 张家顺 王亮亮[1] 王玥[1] 尹晓杰[1] 吴远大 安俊明[1,2] REN Mei-Zhen;LI Xiao;ZHANG Jia-Shun;WANG Liang-Liang;WANG Yue;YIN Xiao-Jie;WU Yuan-Da;AN Jun-Ming(State Key Laboratory on Integrated Optoelectronics,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;Center of Materials Science and Optoelectronics Engineering,University)

机构地区：[1]中国科学院半导体研究所集成光电子学国家重点实验室,北京100083 [2]中国科学院大学材料科学与光电技术学院,北京100049

出　　处：《红外与毫米波学报》2019年第6期701-705,共5页Journal of Infrared and Millimeter Waves

基　　金：Supported by National Key R&D Program of China(2018YFA0306403);National Nature Science Foundation of China(61805232,61435013);K.C.Wong Education Foundation

摘　　要：提出了一种基于平面光波导工艺的带有可调定向耦合器的非对称MZI结构.模拟结果显示,当定向耦合器的两个耦合臂的折射率独立改变时,定向耦合器的调制效果较好;当调制电极与耦合区的波导间距为0时,两个耦合臂的温度差达到最大.测试得到,AMZI的插入损耗为2.05 dB,延迟时间为151.4 ps,脉冲对的功率比近似为1.该器件有助于提高集成QKD器件的性能.To make the pulse couple balanced,an asymmetric Mach-Zehnder interferometer(AMZI)with a tunable directional coupler(DC)of a silica-based planar lightwave circuit(PLC)technology was proposed.The simulation results show that the DC tuning effect is better when the refractive index of both coupling arms changes independently.When the distance between the electrode and the waveguide core in the coupling zone is 0,the temperature difference between the coupling arms reaches the maximum.The test results of AMZI show that the insertion loss is 2.05 dB and the delay time is 151.4 ps.The power ratio of the pulse couple is highly close to one.Our device presents a practical solution to improve the performance of future integrated QKD device.

关 键 词：非对称MZI干涉仪 热场模拟 量子密钥分发 

分 类 号：TN256[电子电信—物理电子学]