{"title":"Numerical Analysis of Relative Intensity Noise of Distributed-Feedback Fiber Lasers Considering Spatial Mode Profile","authors":"Xuanchen Guo;Yinyang Pei;Jianzhong Zhang","doi":"10.1109/JQE.2024.3468998","DOIUrl":null,"url":null,"abstract":"The spatial mode profile of distributed feedback (DFB) lasers is a unique characteristic that distinguishes them from lasers based on F-P cavities. It is utilized to achieve single-mode operation and improve relative intensity noise (RIN) performance. The effective cavity length method, as an approximate method for spatial mode profiling, is conveniently used for theoretical analysis. In this paper, the RIN of DFB fiber lasers was analyzed by considering their spatial mode profile without any approximations, and the results were compared with experimental findings. Additionally, numerical simulations of DFB fiber lasers with different structures were conducted to analyze their noise characteristics and the impact of spatial mode profile on the RIN of the lasers was discussed. The spatial mode profile was solved using the shooting method, with boundary conditions provided based on the erbium ion gain model. The spatial mode profile was then substituted into the RIN expression, yielding the RIN of DFB lasers influenced by spatial mode profile. This physical model is widely applicable and can be used to effectively analyze the dynamic characteristics of most DFB fiber laser structures.","PeriodicalId":13200,"journal":{"name":"IEEE Journal of Quantum Electronics","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Journal of Quantum Electronics","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10695126/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The spatial mode profile of distributed feedback (DFB) lasers is a unique characteristic that distinguishes them from lasers based on F-P cavities. It is utilized to achieve single-mode operation and improve relative intensity noise (RIN) performance. The effective cavity length method, as an approximate method for spatial mode profiling, is conveniently used for theoretical analysis. In this paper, the RIN of DFB fiber lasers was analyzed by considering their spatial mode profile without any approximations, and the results were compared with experimental findings. Additionally, numerical simulations of DFB fiber lasers with different structures were conducted to analyze their noise characteristics and the impact of spatial mode profile on the RIN of the lasers was discussed. The spatial mode profile was solved using the shooting method, with boundary conditions provided based on the erbium ion gain model. The spatial mode profile was then substituted into the RIN expression, yielding the RIN of DFB lasers influenced by spatial mode profile. This physical model is widely applicable and can be used to effectively analyze the dynamic characteristics of most DFB fiber laser structures.
期刊介绍:
The IEEE Journal of Quantum Electronics is dedicated to the publication of manuscripts reporting novel experimental or theoretical results in the broad field of the science and technology of quantum electronics. The Journal comprises original contributions, both regular papers and letters, describing significant advances in the understanding of quantum electronics phenomena or the demonstration of new devices, systems, or applications. Manuscripts reporting new developments in systems and applications must emphasize quantum electronics principles or devices. The scope of JQE encompasses the generation, propagation, detection, and application of coherent electromagnetic radiation having wavelengths below one millimeter (i.e., in the submillimeter, infrared, visible, ultraviolet, etc., regions). Whether the focus of a manuscript is a quantum-electronic device or phenomenon, the critical factor in the editorial review of a manuscript is the potential impact of the results presented on continuing research in the field or on advancing the technological base of quantum electronics.