Abstract

We report on the operation and performance of a matrix array topology for multiplexing reflective interferometric sensors that uses (a) frequency-division multiplexing (FDM) and (b) a combination of frequency-division and time-division multiplexing. The use of reflective sensors in this FDM topology illuminated by a cw source imposes a power limitation not encountered with the use of transmissive sensors. Combining FDM with time-division multiplexing improves the multiplexing gain of the network and improves the level of isolation of the lasers from the signal of the reflective sensors.

© 1995 Optical Society of America

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