基于半导体光放大器的激光信号产生的研究  

Research on Generation of Laser Signal Using Semiconductor Optical Amplifier

作　　者：刘晓渊 高万荣[1] 牟善祥[1] Liu Xiaoyuan;Gao Wanrong;Mu Shanxiang(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu 210094,China)

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094

出　　处：《激光与光电子学进展》2022年第7期174-179,共6页Laser & Optoelectronics Progress

基　　金：中央高校基本科研业务费专项资金(30920010003);国家自然科学基金(61275198,60978069)。

摘　　要：提出了一种利用半导体光放大器来产生激光信号的系统,此系统主要利用了一台可以产生两束不同频率且频率可调的太赫兹激光器。此激光器产生的差频光信号通过一个光电二极管从光信号转换成稳定的电信号。电信号作为低噪声的射频源进入电光调制器可以产生低抖动且高重复率的超短脉冲信号。然后,对此系统各部分结构进行理论建模与仿真实验。最后,根据高斯脉冲理论得出了稳态情况下脉冲函数各参数的值,模拟出了不同调制频率下的单脉冲和连续脉冲。通过改变各参数的值来分析脉冲的变化。仿真结果表明,在10~30 GHz的情况下,可以得到高重复率的连续超短光脉冲。A system is reported in which a semiconductor optical amplifier is used to generate laser signal.The system mainly uses a terahertz laser which can generate two different frequencies and whose frequencies can be adjusted.The optical signal generated by the laser is converted into a stable electrical signal by a photodiode.As a low-noise radio frequency source,electrical signal can generate ultra-short pulse signal with low jitter and high repetition rate.Then,theoretical analysis and simulation experiment are carried out for each part of the system.According to Gaussian pulse theory,the parameters of pulse function in steady state are obtained.Finally,the single pulse and continuous pulse with different modulation frequency are simulated.The change of pulse is analyzed by changing the value of each parameter.The simulation results show that high repetition rate continuous ultrashort optical pulses can be obtained in the range of 10-30 GHz.

关 键 词：激光光学 主动锁模 半导体光放大器 太赫兹 

分 类 号：TN365[电子电信—物理电子学]