激光线宽测量方法的研究综述  

Review on Methods for Laser Linewidth Measurement

作　　者：崔明斌 黄俊刚 杨修伦[1] Cui Mingbin;Huang Jungang;Yang Xiulun(School of Information Science and Engineering,Shandong University,Qingdao,Shandong 266237,China;Guangdong Raying Laser Technology Co.Ltd.,Dongguan,Guangdong 523808,China)

机构地区：[1]山东大学信息科学与工程学院,山东青岛266237 [2]广东瑞盈激光科技有限公司,广东东莞523808

出　　处：《激光与光电子学进展》2021年第9期62-89,共28页Laser & Optoelectronics Progress

基　　金：教育部光电教指分委教育教学研究项目(GDYLJS41);教育部产学合作协同育人项目(2020);山东省自然科学基金(ZR2016FM03);山东大学教育教学改革研究项目(2019Y192)。

摘　　要：回顾总结了各种线宽检测方法,介绍了这些方法的发展过程、原理和所需的实验器材。根据原理的不同,将线宽测量方法分成了基于信号功率谱和基于相位噪声两大类,分析了各种方法中线宽测量精度的限制因素,总结了各种方法在操作时的注意事项,对这些方法的优缺点和对应检测范围进行了全面梳理。根据不同激光器的性能参数和实验条件,推荐了合适的线宽检测方法。最后,在实际应用方面.针对可应用于窄线宽可调谐激光器(广泛应用于相干通信)的线宽测量方法.进行了较为详细的分析与讨论。This paper reviews and summarizes various methods for linewidth measurement,introduces their development process,principles,and the required experimental equipment.According to the difference in principle,the methods for linewidth measurement are divided into two categories based on signal power spectra or phase noises.The limiting factors of linewidth measurement accuracy for these methods are analyzed and the precautions for the operation of these methods are summarized.In addition,the advantages and disadvantages of these methods as well as the corresponding detection ranges are comprehensively listed.According to the performance parameters and experimental conditions for different lasers,suitable linewidth detection methods are recommended.Finally,as for their practical applications,the methods for linewidth measurement of narrow-linewidth tunable lasers(widely used for coherent communications)are analyzed and discussed in detail.

关 键 词：光谱学 线宽检测 信号功率谱 相位噪声 窄线宽可调谐激光器 相干通信 

分 类 号：TN241[电子电信—物理电子学]