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Abstract <p>The output power of a fiber-optic temperature sensor based on a Michelson interferometer integrated into an inner-clad optical fiber is increased by approximately 14 dB by depositing a gold mirror approximately 100 nm thick on the fiber end face. Studies of the long-term temperature stability of the sensor demonstrate that the gold coating markedly degrades during annealing at temperatures of 450°C and above.</p>

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Temperature Sensor Based on a Michelson Interferometer with a Gold Mirror at the End Face

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • O. N. Egorova,
  • S. G. Zhuravlev,
  • M. Yu. Salganskii,
  • V. V. Velmiskin,
  • M. A. Kononov,
  • Ya. V. Kravchenko,
  • O. T. Kamenev,
  • V. N. Sorokovikov,
  • S. L. Semjonov

摘要

Abstract

The output power of a fiber-optic temperature sensor based on a Michelson interferometer integrated into an inner-clad optical fiber is increased by approximately 14 dB by depositing a gold mirror approximately 100 nm thick on the fiber end face. Studies of the long-term temperature stability of the sensor demonstrate that the gold coating markedly degrades during annealing at temperatures of 450°C and above.