Random fiber laser based on a partial-reflection random fiber grating for high temperature sensing

Jiancheng Deng, D. V. Churkin, Zuowei Xu, Xuewen Shu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A stable single wavelength random fiber laser (RFL) with a partial-reflection random fiber grating (PR-RFG) for high temperature sensing is proposed and demonstrated for the first time, to the best of our knowledge. The PR-RFG is fabricated with the help of a femtosecond laser, with its highest reflection peak significantly higher than all other reflection peaks, which can ensure the stability of this filter-free RFL. Theoretical calculations also show that such a PR-RFG should be designed with reflectivity in the range of ∼30%−90% to obtain one reflection peak significantly higher than other peaks. The threshold of this laser is only 6.4 mW. In addition, the RFL realizes temperature sensing in the range from 25C to 500C and has an optical signal-to-noise ratio of up to 70 dB.

Original languageEnglish
Pages (from-to)957-960
Number of pages4
JournalOptics Letters
Volume46
Issue number5
DOIs
Publication statusPublished - 1 Mar 2021

OECD FOS+WOS

  • 1.03.UH PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
  • 1.03.SY OPTICS

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