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Proceedings Paper

Distributed force-sensing optical fiber using forward time-division multiplexing
Author(s): Marcos Kleinerman; Peter W. Kelleher
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Paper Abstract

A new optical fiber capable of sensing distributed forces along its continuous length comprises a small central core and a noncontiguous second light-guiding region of longer optical path length. When interrogated with sufficiently short light pulses launched into the central core at the fiber launch end, mechanical forces acting at different points along the fiber cause the deflection of a fraction of the intensity of the interrogating light pulses propagating along the fiber at each point from the central core to the second light-guiding region, where they generate positive pulsed light signals reaching the fiber distal end separated in the time domain from the interrogating light pulses and from the signals generated at other sensing points along the fiber, and with an intensity several order of magnitude stronger than that of Rayleigh- backscatter signals. In addition to its potential use as a distributed force sensor, the fiber could serve as a telecommunications line allowing the noninvasive coupling of information at many points, simultaneously or in any arbitrary sequence, without the need for time-sharing protocols.

Paper Details

Date Published: 1 January 1992
PDF: 11 pages
Proc. SPIE 1586, Distributed and Multiplexed Fiber Optic Sensors, (1 January 1992); doi: 10.1117/12.56508
Show Author Affiliations
Marcos Kleinerman, American Micro-Optical, Inc. (United States)
Peter W. Kelleher, American Micro-Optical, Inc. (United States)

Published in SPIE Proceedings Vol. 1586:
Distributed and Multiplexed Fiber Optic Sensors
Alan D. Kersey; John P. Dakin, Editor(s)

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