• Optical Communication Technology
  • Vol. 47, Issue 10, 14 (2021)
CHEN Wenjia, CHENG Chunfu, and OU Yiwen
Author Affiliations
  • [in Chinese]
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    DOI: 10.13921/j.cnki.issn1002-5561.2021.10.004 Cite this Article
    CHEN Wenjia, CHENG Chunfu, OU Yiwen. Optimal design of low-gain and low-noise gain-clamped bidirectional erbium-doped fiber amplifier[J]. Optical Communication Technology, 2021, 47(10): 14 Copy Citation Text show less

    Abstract

    The bidirectional erbium-doped fiber amplifier(Bi-EDFA) is a key component of the spatial domain active fiber cavity ring-down sensing system, and its gain characteristics and noise characteristics directly affect the stability of the sensing system. A low-gain and low-noise gain-clamped Bi-EDFA suitable for spatial active fiber cavity ring-down sensing systems is designed and optimized by Optisystem simulation software. The simulation results show that by optimizing the design, a Bi-EDFA with gain coefficient and noise coefficient of 15.35 dB and 3.52 dB respectively can be obtained, and the gain can be clamped.