Spatially-multiplexed fibre-optic Bragg grating strain and temperature sensor system based on interferometric wavelength-shift detection

Rao, Yun-Jiang; Kalli, Kyriacos; Brady, G.P.; Webb, David J.; Jackson, David A.; Zhang, Lin and Bennion, Ian (1995). Spatially-multiplexed fibre-optic Bragg grating strain and temperature sensor system based on interferometric wavelength-shift detection. Electronics letters, 31 (12), pp. 1009-1010.

Abstract

A prototype fibre-optic system using interferometric wavelength-shift detection, capable of multiplexing up to 32 fibre-optic Bragg grating strain and temperature sensors with identical characteristics, has been demonstrated. This system is based on a spatially multiplexed scheme for use with fibre-based low-coherence interferometric sensors, reported previously. Four fibre-optic Bragg grating channels using the same fibre grating have been demonstrated for measuring quasi-static strain and temperature.

Uncontrolled Keywords: diffraction gratings, fibre optic sensors, light interferometers, multiplexing, strain measurement, strain sensors, temperature sensors, fibre grating, fibre-based low-coherence interferometric sensors, fibre-optic Bragg grating channels, fibre-optic system, interferometric wavelength-shift detection, quasi-static strain, spatially multiplexed scheme, spatially-multiplexed fibre-optic Bragg grating sensor
Published Date: 1995-06-08

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