波长可调谐窄线宽激光器的线宽特性  

Linewidth Characteristics of Wavelength-Tunable Narrow Linewidth Lasers

作　　者：冯智宇 成煜 苑立波[1,2] 李立彤 黄苏梅 李静 Feng Zhiyu;Cheng Yu;Yuan Libo;Li Litong;Huang Sumei;Li Jing(College of Electronic Engineering and Automation,Guilin University of Electronic Technology,Guilin 541004,Guangxi,China;Guangxi Key Laboratory of Optoelectronic Information Processing,Guilin 541004,Guangxi,China;State Key Laboratory of Optical Fiber and Cable Manufacture Technology,Yangtze Optical Fiber and Cable Joint Stock Limited Company,Wuhan 430073,Hubei,China;Han's Laser Technology Industry Group Co.,Ltd.,Shenzhen 518000,Guangdong,China)

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004 [2]广西光电信息处理重点实验室,广西桂林541004 [3]长飞光纤光缆股份有限公司光纤光缆制备技术国家重点实验室,湖北武汉430073 [4]大族激光科技产业集团股份有限公司,广东深圳518000

出　　处：《激光与光电子学进展》2022年第21期150-155,共6页Laser & Optoelectronics Progress

基　　金：国家重点研发计划(2019YFB2203901);国家自然科学基金(61975038)。

摘　　要：为了探究激光器线宽的综合特性,对波长可调谐窄线宽激光器的线宽进行了理论分析。搭建了基于非平衡马赫曾德尔干涉结构的延时自外差测量系统,以研究波长可调谐窄线宽激光器的稳态及动态线宽特性。为了平衡线宽测量的速度和精度,完成了不同接收机带宽下的线宽测试。针对激光器波长连续调谐时产生的线宽展宽问题,通过控制激光器波长调谐时的步进量保持输出功率的稳定性,补偿了线宽的测量误差。该研究不仅能完善激光器线宽特性的研究,对光频域反射技术的研究也具有重要意义。In order to explore the comprehensive characteristics of the linewidth of the lasers,the theoretical analysis of the linewidth of the wavelengthtunable narrow linewidth lasers is carried out.In this paper,the delayed selfheterodyne measurement system based on the nonequilibrium MachZehnder interferometer structure is built to investigate the steadystate and dynamic linewidth characteristics of wavelengthtunable narrow linewidth lasers.In order to balance the speed and accuracy of linewidth measurements,linewidth tests at different receiver bandwidths are implemented.For the linewidth spreading problem arising from continuous laser wavelength tuning,the linewidth measurement error is compensated by controlling the stepping amount while maintain the stability of the output power.This study can not only improve the study of laser linewidth characteristics,but also has important significance for the study of optical frequencydomain reflectometry technology.

关 键 词：激光器 窄线宽激光器 线宽测量 延时自外差法 拍频法 

分 类 号：O436[机械工程—光学工程]