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Proceedings Paper

New modulation scheme for optical fiber point temperature sensor
Author(s): Faramarz Farahi
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Paper Abstract

A fiberoptic interferometric sensor illuminated by a laser source requires a minimum path imbalance in order to implement one of the standard signal-processing techniques. In this work, a modulation technique is described in conjunction with a fiber interferometric sensor with a typical size of 2-3 mm. This is a passive technique which makes use of modal properties of highly birefringent fiber to generate quadrature-output components. The quadrature outputs are then used to generate a fixed-frequency carrier where the phase information is affected by the temperature change.

Paper Details

Date Published: 1 September 1991
PDF: 10 pages
Proc. SPIE 1504, Fiber-Optic Metrology and Standards, (1 September 1991); doi: 10.1117/12.46989
Show Author Affiliations
Faramarz Farahi, Univ. of North Carolina/Charlotte (United States)

Published in SPIE Proceedings Vol. 1504:
Fiber-Optic Metrology and Standards
Oliverio D.D. Soares, Editor(s)

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