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Miniaturized Optical Fiber Fabry-Perot Interferometer Fabricated by Femtosecond Laser Irradiation and Selective Chemical Etching

  • Lei Yuan
  • , Xinwei Lan
  • , Jie Huang
  • , Hanzheng Wang
  • , Baokai Cheng
  • , Jie Liu
  • , Hai Xiao
  • Missouri University of Science and Technology

Research output: Contribution to journalArticlepeer-review

Abstract

A U-shaped optical fiber inline microchannel was fabricated by femtosecond laser irradiation and subsequent selective chemical wet etching. A high quality micro-cavity embedded inside the channel was obtained to construct a Fabry-Perot interferometer (FPI). A fringe visibility of 20 dB in spectrum domain was achieved. High temperature survivability of this micro device was also demonstrated. The proposed assembly-free optical fiber inline interferometer is attractive for sensing applications in high-temperature harsh environments.

Keywords

  • Chemical etching
  • Chemical wet etching
  • Fabry-Perot interferometers
  • Fiber fabry-perot interferometers
  • Fringe visibilities
  • Fs laser irradiation
  • Harsh environment
  • High temperature
  • Optical fiber fabrication
  • Optical fibers
  • Selective chemical etching
  • Sensing applications
  • Temperature sensing
  • Ultrashort pulses
  • Uranium

Disciplines

  • Electrical and Computer Engineering

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