Generation of an intensity-balanced optical pulse couple based on silica planar lightwave circuit
投稿时间:2019-03-19  修订日期:2019-11-13  download
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作者单位邮编
REN Mei-Zhen State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083,China
Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences, Beijing 100049, China 
100049
LI Xiao State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083,China
Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences, Beijing 100049, China 
ZHANG Jia-Shun State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083,China 
WANG Liang-Liang State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083,China 
WANG Yue State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083,China 
YIN Xiao-Jie State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083,China 
WU Yuan-Da State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083,China
Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences, Beijing 100049, China 
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 EngineeringUniversity of Chinese Academy of Sciences, Beijing 100049, China 
Abstract:To make the pulse couple balanced, herewe proposed an asymmetric Mach-Zehnder interferometer (AMZI) with a tunable directional coupler (DC) of a silica-based planar lightwave circuit (PLC) technology. 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.
keywords:asymmetric Mach-Zehnder interferometer  thermal field simulation  quantum key distribution
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Copyright:《Journal of Infrared And Millimeter Waves》