Yj. Rao et al., SPATIALLY-MULTIPLEXED FIBEROPTIC BRAGG GRATING STRAIN AND TEMPERATURESENSOR SYSTEM BASED ON INTERFEROMETRIC WAVELENGTH-SHIFT DETECTION, Electronics Letters, 31(12), 1995, pp. 1009-1010
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 bee
n demonstrated. THS system is based on a spatially multiplexed scheme
for use with fibre-based low-coherence interferometric sensors, report
ed previously. Four fibre-optic Bragg grating channels using the same
fibre grating have been demonstrated for measuring quasi-static strain
and temperature.