A fiber bragg grating accelerometer based on a hybridization of cantilever beam

  • Dingyi Feng
  • , Xueguang Qiao
  • , Hangzhou Yang
  • , Qiangzhou Rong
  • , Ruohui Wang
  • , Yanying Du
  • , Manli Hu
  • , Zhongyao Feng

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

A compact fiber Bragg grating (FBG) accelerometer based on a hybridization of two cantilever beams is demonstrated. Two FBGs are prestressed and fixed on the combined-beam longitudinal symmetrically. When a vibration is exerted on the accelerometer, the reflection-peaks of two gratings shift sharply in opposite directions without unwanted chirp. Experimental results show that the proposed sensor exhibits a high dynamic sensitivity of 218.4 pm/G and broad frequency range of 10-150 Hz with a wide dynamic range of 0.1 to 3 G. The cross-axis response is 3.2% of the main axis, and the temperature is self-compensated owing to the same responses to temperature of two reflection wavelengths.

Original languageEnglish
Pages (from-to)1532-1537
Number of pages6
JournalIEEE Sensors Journal
Volume15
Issue number3
DOIs
StatePublished - 1 Mar 2015
Externally publishedYes

Keywords

  • Fiber optics sensors
  • fiber Bragg gratings
  • vibration measurement

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