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Proceedings Paper

Evanescent Field Spectroscopy With Optical Fibers For Chemical Sensing
Author(s): Marek T Wlodarczyk; Deborah J Vickers; Samuel P Kozaitis
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Paper Abstract

A simple fiber optic chemical sensor is reported which may be used to detect in situ and in real time concentrations of gases and liquids. The sensor, comprised of a single LED source and a cladding-free multimode fiber, operates on the principle of evanescent field and differential spectroscopy. Exhibiting a linear response to relative humidity, this sensor selectively detects water vapor while remaining insensitive to source power fluctuations.

Paper Details

Date Published: 28 April 1987
PDF: 6 pages
Proc. SPIE 0718, Fiber Optic and Laser Sensors IV, (28 April 1987); doi: 10.1117/12.937515
Show Author Affiliations
Marek T Wlodarczyk, General Motors Research Laboratories (United States)
Deborah J Vickers, General Motors Research Laboratories (United States)
Samuel P Kozaitis, Wayne State University (United States)

Published in SPIE Proceedings Vol. 0718:
Fiber Optic and Laser Sensors IV
Ramon P. DePaula; Eric Udd, Editor(s)

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