Wavelength-division and spatial multiplexing using tandem interferometers for bragg grating sensor networks
Journal
Optics Letters
Date Issued
December 15, 1995
DOI
10.1364/OL.20.002544
Abstract
This paper reports a new system that addresses a large number of Bragg grating sensors (BSGs) and gives high-resolution measurement of a perturbing field. The multiplexing scheme uses the inherent wavelength selectivity of the gratings combined with the allocation of spatially distinct detection channels for a number of sensors. The sensors' operation is facilitated by two concatenated interferometers. The demodulation of eight BSGs has been demonstrated.