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Proceedings Paper

Multiplexed, High- And Low-Sensitivity Fiber-Optic Strain/Temperature Sensor
Author(s): J. D. Muhs
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Paper Abstract

An intrinsic, wavelength-division-multiplexed, high- and low-sensitivity fiber-optic sensor is proposed and analyzed as a possible alternative to the existing optical fiber-sensing methods used in real-time temperature and strain evaluations. The sensor unites two existing technologies: (1) the dual core, single-mode, cross-talk phenomena exhibiting relatively low sensitivity and (2) the Fabry-Perot interferometric sensing phenomena that is known for its high sensitivity. The sensor uses the wavelength sensitivity of fused, tapered, single-mode couplers as a method of multiplexing the two widely exploited sensors outlined above. The sensor configuration consists of two independent coherent sources of differing wavelengths, a wavelength division multiplexer/demultiplexer, a center-cleaved, fused, biconnically tapered, single-mode coupler/splitter, and partially reflective, mirrored surfaces at designated locations along the fiber. Thus, a unique sensing arrangement having two independent (high- and low-sensitivity) sensors functioning simultaneously is realized.

Paper Details

Date Published: 13 February 1990
PDF: 5 pages
Proc. SPIE 1169, Fiber Optic and Laser Sensors VII, (13 February 1990); doi: 10.1117/12.963029
Show Author Affiliations
J. D. Muhs, Oak Ridge National Laboratory (United States)


Published in SPIE Proceedings Vol. 1169:
Fiber Optic and Laser Sensors VII
Ramon P. DePaula; Eric Udd, Editor(s)

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