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Proceedings Paper

Multiplex architecture for 3 x 3 coupler based fiber optic sensors
Author(s): Greg J. Reid; David A. Brown
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Paper Abstract

This paper presents a frequency division multiplexing (FDM) design that is compatible with 3 X 3 coupler terminated Mach-Zehnder interferometric sensors. Unlike the FDM technique that is presently used with phase generated carrier (PGC) demodulation schemes, this technique does not require modulation of the wavelength of the laser source or the introduction of optical path differences (OPD) in the interferometer in order to generate a phase carrier modulation in the interferometer. The technique described in this paper relies simply on amplitude modulation (AM) of the light intensity and uses the three outputs of an interferometer to unambiguously recover the phase modulation in the interferometer.

Paper Details

Date Published: 30 December 1993
PDF: 10 pages
Proc. SPIE 2071, Distributed and Multiplexed Fiber Optic Sensors III, (30 December 1993); doi: 10.1117/12.165919
Show Author Affiliations
Greg J. Reid, Naval Postgraduate School (United States)
David A. Brown, Naval Postgraduate School (United States)

Published in SPIE Proceedings Vol. 2071:
Distributed and Multiplexed Fiber Optic Sensors III
Alan D. Kersey; John P. Dakin, Editor(s)

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