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Proceedings Paper

Predetection correlation in a spread-spectrum multiplexing system for fiber optic interferometers
Author(s): Hamed S. Al-Raweshidy; Deepak G. Uttamchandani
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Paper Abstract

A novel spread spectrum technique is reported for passive multiplexing of interferometric optical fiber sensors. The technique relies on digital spread spectrum modulation of an optical source, and the use of correlation techniques to distinguish signals arriving from specified sensors in the network. The unique feature of the system is that correlation is achieved by the use of an integrated optic modulator, prior to optical detection. Pre-detection correlation exploits the high bandwidth of integrated optic devices, and enables the use of low bandwidth photodetectors and other (electrical) post-detection components.

Paper Details

Date Published: 1 February 1991
PDF: 8 pages
Proc. SPIE 1367, Fiber Optic and Laser Sensors VIII, (1 February 1991); doi: 10.1117/12.24761
Show Author Affiliations
Hamed S. Al-Raweshidy, Univ. of Strathclyde (United Kingdom)
Deepak G. Uttamchandani, Univ. of Strathclyde (United Kingdom)


Published in SPIE Proceedings Vol. 1367:
Fiber Optic and Laser Sensors VIII
Ramon P. DePaula; Eric Udd, Editor(s)

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