基于光子晶体的量子点半导体光放大器波长转换特性  

Wavelength Conversion Characteristics of Quantum-Dot Semiconductor Optical Amplifier Based on Photonic Crystal

作　　者：李晓博 王海龙 马利男 龚谦[2] Li Xiaobo;Wang Hailong;Ma Linan;Gong Qian(Shandong Provincial Key Laboratory of Laser Polarization and Information Technology,School of Physics and Engineering,Qufu Normal University,Qufu,Shandong 273165,China;Key Laboratory of Terahertz Solid-State Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China)

机构地区：[1]曲阜师范大学物理工程学院山东省激光偏光与信息技术重点实验室,山东曲阜273165 [2]中国科学院上海微系统与信息技术研究所中国科学院太赫兹固态技术重点实验室,上海200050

出　　处：《光学学报》2022年第2期1-8,共8页Acta Optica Sinica

基　　金：国家自然科学基金(61674096);山东省自然科学基金(ZR2019PA010)。

摘　　要：量子点半导体光放大器(QD-SOA)具有皮秒级的增益恢复时间和超快的载流子浓度恢复等特点,光子晶体(PC)与QD-SOA结合后具有强非线性效应、低吸收损耗、高功率传输和低功耗等优点。研究了光子晶体-量子点半导体光放大器(PC-QDSOA)的波长转换特性,详细分析了最大模式增益、泵浦光功率、探测光功率、有源区长度对PC-QDSOA波长转换Q因子的影响及注入电流、泵浦光功率、探测光功率、有源区长度与PC-QDSOA波长转换消光比的关系,并将PC-QDSOA仿真结果与QD-SOA的仿真结果进行比较。结果显示PC-QDSOA的Q因子和消光比的数值总是大于QD-SOA,说明PC-QDSOA比QD-SOA的输出信号质量更好,信号传输效率更高,转换性能更优越。研究结果对PC-QDSOA的应用具有一定的指导意义。A quantum-dot semiconductor optical amplifier(QD-SOA) has the characteristics of picosecond gain recovery time and ultrafast carrier concentration recovery. The combination of photonic crystal(PC) and QD-SOA has the advantages of strong nonlinear effect, less absorption loss, high power transmission, and low power consumption. The wavelength conversion characteristics of photonic crystal-quantum dot semiconductor optical amplifiers(PC-QDSOAs) are studied, the influences of maximum mode gain, pumping power, detecting power, and active region length on the Q-factor of PC-QDSOA wavelength conversion are analyzed, and the relationships among the injection current, pumping power, detecting power, active region length, and extinction ratio of PC-QDSOA wavelength conversion are analyzed in detail. The simulation results of QD-SOA and PC-QDSOA are compared. The results show that the values of Q-factor and extinction ratio of PC-QDSOA are greater that that of QD-SOA, which indicates that the output signal quality, signal transmission efficiency, and conversion performance of PC-QDSOA are better than that of QD-SOA. The research results have guiding significance for the application of PC-QDSOA.

关 键 词：光通信 量子点半导体光放大器 光子晶体 波长转换 Q因子 消光比 

分 类 号：O436[机械工程—光学工程]