High-sensitivity optical chemsensor based on etched D-fibre Bragg gratings

Zhou, Kaiming, Chen, Xianfeng F., Zhang, Lin and Bennion, Ian (2004). High-sensitivity optical chemsensor based on etched D-fibre Bragg gratings. Electronics letters, 40 (4), pp. 232-234.

Abstract

A novel and simple optical chemsensor concept based on cladding etched Bragg gratings UV-inscribed in D-fibre is reported. The sensitisation process of the Bragg structure to the refractive index of surrounding-medium under HF-etching has been investigated. Two etched devices were used to measure the concentrations of sugar solution, giving sensitivity as high as 0.02 nm/%.

Uncontrolled Keywords: high-sensitivity optical chemsensor, etched D-fibre Bragg gratings, cladding, sensitisation process, Bragg structure, refractive index, HF-etching, sugar solution, UV-inscribed D-fibre
Published Date: 2004-04
Authors: Zhou, Kaiming
Chen, Xianfeng F.
Zhang, Lin
Bennion, Ian

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