Fiber Bragg grating Sensor interrogation using chirped fiber grating-based sagnac loop

Donghui Zhao*, Xuewen Shu, Yicheng Lai, Lin Zhang, Ian Bennion

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We have investigated numerically and experimentally a fiber Bragg grating (FBG) sensor interrogation scheme utilizing a linear chirped grating-based Sagnac loop as a wavelength-dependent receiver. The scheme is suitable for both static and dynamic sensor interrogation with advantages of stable and linear readout response and easily-adjustable sensing resolution and dynamic range. Static and dynamic strain resolutions as high as ± 4.2 με and 0.406 με/√ Hz have been demonstrated using this scheme.

Original languageEnglish
Pages (from-to)734-738
Number of pages5
JournalIEEE Sensors Journal
Volume3
Issue number6
DOIs
Publication statusPublished - Dec 2003

Keywords

  • chirped fiber grating
  • sagnac loop
  • sensor interrogation

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