Sampled Fibre Bragg Grating for Simultaneous Refractive Index and Temperature Measurement

X Shu, Bashir A. L. Gwandu, Yu Liu, Lin Zhang, Ian Bennion

Research output: Contribution to journalArticle

Abstract

We present a novel scheme for simultaneous measurement of temperature and refractive index by use of a single sampled fiber Bragg grating (SFBG). The intrinsic nature of a SFBG that possesses both fiber Bragg grating and long-period grating spectral responses permits the temperature effect to the measured solely from the former, whereas the refractive-index information is extracted from the latter. Using such a dual-parameter sensor, we successfully demonstrated measurement of the dependence on temperature of the refractive index of an aqueous solution of sucrose.
Original languageEnglish
Pages (from-to)774-776
Number of pages3
JournalOptics Letters
Volume26
Issue number11
DOIs
Publication statusPublished - Jun 2001

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