Title :
High-performance serial array of coherence multiplexed interferometric fiber-optic sensors
Author :
Gusmeroli, Valeria
Author_Institution :
CISE Tecnologie Innovative, Milan, Italy
fDate :
10/1/1993 12:00:00 AM
Abstract :
A noise analysis of coherence multiplexed interferometric sensors on a serial array configuration is presented. From the analysis it yields that in order to improve the system performance the source induced noise and the crosstalk noise must be lowered. The design of a low-coherence polarimetric sensor array multiplexed online is reported too. The very low-coherence length of the superluminescent source employed and the high precision of the technique used to distribute power among the different multiplexed sensing segments of optical fiber make it possible to overcome these two noise sources and to realize online distributed measurements with high spatial resolution (10 cm), high sensitivity (5 μHz), and low crosstalk (-40 dB) over a high number (up to 100) of equal-length segments of fiber
Keywords :
crosstalk; fibre optic sensors; light interferometers; multiplexing; polarimeters; sensitivity; coherence multiplexed interferometric fiber-optic sensors; crosstalk noise; equal-length segments; high precision; high sensitivity; high spatial resolution; high-performance serial array; low crosstalk; low-coherence polarimetric sensor; multiplexed sensing segments; noise analysis; online distributed measurements; online multiplexed sensor arrays; optical fiber; source induced noise; superluminescent source; system performance; very low-coherence length; Crosstalk; Length measurement; Noise measurement; Optical fibers; Optical noise; Performance analysis; Power measurement; Sensor arrays; Spatial resolution; System performance;
Journal_Title :
Lightwave Technology, Journal of
