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Proceedings Paper

Cross-sensitivity considerations for wavelength-modulated and interferometric optical fiber sensors
Author(s): Scott A. Meller; Vivek Arya; Anbo Wang; Richard O. Claus
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Paper Abstract

Cross-sensitivity refers to the `cross-talk' between the perturbation being monitored (strain, etc.) and the unwanted ambient physical variables. These cross-sensitivity considerations need to be resolved for realizing accurate, self-calibrated fiber sensor configurations. This paper presents an evaluation of the cross-sensitivity existing between physical variables typically measured by Bragg grating based fiber sensors and the extrinsic Fabry-Perot interferometer (EFPI) based sensors. Cross-sensitivities were investigated between the desired measurand, axial strain, and undesirable sources of error, lateral strain and temperature fluctuation. It is shown that the EFPI sensors are less susceptible to cross-sensitivity induced error than Bragg grating based optical fiber sensors. From the results obtained, it is concluded that the extrinsic Fabry-Perot sensor is a better candidate for certain applications requiring minimized cross- sensitivities, as compared with the Bragg grating-based optical fiber sensor.

Paper Details

Date Published: 3 January 1996
PDF: 8 pages
Proc. SPIE 2594, Self-Calibrated Intelligent Optical Sensors and Systems, (3 January 1996); doi: 10.1117/12.229220
Show Author Affiliations
Scott A. Meller, Virginia Polytechnic Institute and State Univ. (United States)
Vivek Arya, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2594:
Self-Calibrated Intelligent Optical Sensors and Systems
Anbo Wang, Editor(s)

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