Sensor interrogation technique using chirped fibre grating based Sagnac loop

Donghui Zhao, Xuewen Shu, Lin Zhang, Ian Bennion

Research output: Contribution to journalArticle

Abstract

A novel and simple sensor interrogation scheme for fibre Bragg grating (FBG)-based sensing systems is demonstrated. In this scheme, a chirped FBG-based Sagnac loop is used as a wavelength-dependent receiver, and a stable and linear readout response is realised. It is a significant advantage of this scheme that the sensitivity and the measurement wavelength range can be easily adjusted by controlling the chirp of the FBG or using an optical delay line in the Sagnac loop.
Original languageEnglish
Pages (from-to)312-313
Number of pages2
JournalElectronics letters
Volume38
Issue number7
DOIs
Publication statusPublished - 28 Mar 2002

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