Laser & Optoelectronics Progress, Volume. 59, Issue 19, 1914002(2022)

Optical Fiber Laser Linewidth Optimization Based on Light Self-Injection Method

Congyi Pan, Wangyun Liu*, and Zhaojin Fan
Author Affiliations
  • School of Optoelectronic Engineering, Xi'an Technological University, Xi'an 710021, Shaanxi, China
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    Figures & Tables(8)
    Basic structure of delayed self-heterodyne measurement system
    Basic structure of optical self-injection dual-cavity feedback
    Optimization and measurement system of fiber laser linewidth
    Spectrum before and after optimization. (a) Before optimization; (b) after optimization
    Lorentzian fitting curve of the optimized linewidth spectrum. (a) Before optimization; (b) after optimization
    • Table 1. Linewidth of the laser at 10 dB

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      Table 1. Linewidth of the laser at 10 dB

      ParameterMeasure linewidth /kHzLaser linewidth /kHzAverage power /mWCenter wavelength /nm
      Before optimization10.661.785.9541550.13
      After optimization7.881.314.0821550.13
    • Table 2. Measurement results of laser linewidth before optimization

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      Table 2. Measurement results of laser linewidth before optimization

      No.12345678910Average
      Measure linewidth10.6610.7410.6010.7210.7110.6610.7310.7110.7010.6810.691
      Laser linewidth1.781.791.771.791.791.781.791.791.781.781.782
    • Table 3. Measurement results of laser linewidth after optimization

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      Table 3. Measurement results of laser linewidth after optimization

      No.12345678910Average
      Measure linewidth7.887.977.898.087.727.847.907.937.878.067.914
      Laser linewidth1.311.331.321.351.291.311.321.321.311.341.319
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    Congyi Pan, Wangyun Liu, Zhaojin Fan. Optical Fiber Laser Linewidth Optimization Based on Light Self-Injection Method[J]. Laser & Optoelectronics Progress, 2022, 59(19): 1914002

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jul. 23, 2021

    Accepted: Oct. 8, 2021

    Published Online: Sep. 23, 2022

    The Author Email: Liu Wangyun (312229964@qq.com)

    DOI:10.3788/LOP202259.1914002

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