{"corpus_id":133567470,"paper_sha":"219aa1d8ba914042f08ed770e40b2d7047b7365e","doi":"10.1016/J.YOFTE.2019.03.024","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2932898757,"dblp_id":null,"acl_id":null,"title":"High-precision narrow laser linewidth measurement based on coherent envelope demodulation","year":2019,"publication_date":"2019-07-01","venue":"Optical fiber technology (Print)","journal":{"name":"Optical Fiber Technology","pages":null,"volume":null},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Physics","Engineering"],"reference_count":18,"citation_count":12,"influential_citation_count":0,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Abstract This paper presents a novel method for high-precision narrow laser linewidth measurement through demodulating the coherent envelope of the short delayed self-heterodyne interferometry spectrum. Our method based on short delayed self-heterodyne interferometry can ignore the influence of Gaussian broadening induced by 1/f frequency noise and eventually obtain the strict Lorentzian spectrum and the corresponding linewidth. The feasibility of the method has been verified via theoretical analysis, simulation, and experimentation. 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