Fiber-optic anemometer based on metal infiltrated microstructured optical fiber inscribed with Bragg grating

Jie Wang, Shaorui Gao, Zhengyong Liu, Aping Zhang, Yonghang Shen, Hwa Yaw Tam

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)


An all-fiber optical anemometer with high light-heat conversion efficiency by using an in-house microstructured optical fiber Bragg grating (MOFBG) is presented. Low-molten-temperature BiSnIn alloy was successfully infiltrated into 11- cm length of a six-hole microstructured optical fiber which was inscribed with a fibre Bragg grating (FBG) centered at ~848 nm. Light launched into the MOFBG was strongly absorbed by the metal to generate heat, while the FBG was utilized to monitor temperature change due to surrounding wind speed. The sensitivity of the laser-heated MOFBG anemometer was measured to be ~0.1 nm/(m/s) for wind speed ranged from 0.5 m/s to 2 m/s. The efficiency of the anemometer, defined as effective sensitivity per pump power, is 8.7 nm/(m/s∗W).
Original languageEnglish
Title of host publication24th International Conference on Optical Fibre Sensors, OFS 2015
ISBN (Electronic)9781628418392
Publication statusPublished - 1 Jan 2015
Event24th International Conference on Optical Fibre Sensors, OFS 2015 - Pestana Hotel and Convention Centre, Curitiba, Brazil
Duration: 28 Sep 20152 Oct 2015


Conference24th International Conference on Optical Fibre Sensors, OFS 2015


  • Anemometer
  • FBG
  • Fiber sensor
  • Microstructured optical fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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