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Chin. Phys. B, 2023, Vol. 32(3): 034205    DOI: 10.1088/1674-1056/ac872b

A kind of multiwavelength erbium-doped fiber laser based on Lyot filter

Zhehai Zhou(周哲海)1,†, Jingyi Wu(吴婧仪)1, Kunlong Min(闵昆龙)2, Shuang Zhao(赵爽)1, and Huiyu Li(李慧宇)1
1 Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science&Technology University, Beijing 100192, China;
2 Beijing Aerospace Measurement&Control Technology Co., Ltd., Beijing 100041, China
Abstract  A multiwavelength tunable ring-cavity erbium-doped fiber laser (EDFL) based on a Lyot filter was presented. For the proposed Lyot filter, a comb filter consisting of an EDF-polarization-maintaining fiber (EDF-PMF), a polarization controller (PC), and a circulator with four ports was used to suppress the mode competition. The light transmission direction was guaranteed by the circulator. For the proposed fiber laser, tunable single, dual, triple, quadruple, quintuple, sextuple, and septuple wavelengths were realized. A single-wavelength laser output with an optical signal-to-noise ratio (SNR) of up to 30.56 dB was realized, and a tuning range of 1590.54 nm to 1599.54 nm was achieved by tuning the PC. The stability of the single, dual, triple, and quadruple-wavelength center power fluctuations was less than 0.05 dB, 0.98 dB, 5.07 dB, and 7.71 dB respectively. When the laser was operated in the multiwavelength condition, the SNR was more than 20.97 dB. The proposed erbium-doped fiber laser is suitable for fiber-sensing system applications.
Keywords:  multiwavelength erbium-doped fiber laser      Lyot filter      polarization-maintaining fiber      circulator  
Received:  10 May 2022      Revised:  24 July 2022      Accepted manuscript online:  05 August 2022
PACS:  42.55.Wd (Fiber lasers)  
  42.60.By (Design of specific laser systems)  
  42.79.Ci (Filters, zone plates, and polarizers)  
  42.62.Cf (Industrial applications)  
Fund: Project supported by Beijing Great Wall Scholars Program (Grant No. CIT & TCD20190323), Beijing Youth Talent Support Program (Grant No. Z2019042), and the National Natural Science Foundation of China (Grant No. 61875237).
Corresponding Authors:  Zhehai Zhou     E-mail:

Cite this article: 

Zhehai Zhou(周哲海), Jingyi Wu(吴婧仪), Kunlong Min(闵昆龙), Shuang Zhao(赵爽), and Huiyu Li(李慧宇) A kind of multiwavelength erbium-doped fiber laser based on Lyot filter 2023 Chin. Phys. B 32 034205

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