Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6457
Title: Force measurement by visibility modulated fiber optic sensor
Authors: Lau, KS
Chan, TL
Wong, KH
Issue Date: 1-Dec-1999
Publisher: Optical Society of America
Source: Applied optics, 1 Dec. 1999, v. 38, no. 34, p. 7163-7164 How to cite?
Journal: Applied optics 
Abstract: The birefringence of optic fiber is sensitive to external physical changes. This produces an undesirable effect of reducing fringe visibility for an interferometer made up of ordinary single-mode fibers. In this work, we actively modulate the reference arm of a Mach-Zehnder interferometer with a PZT drum. Force sensing is achieved by measuring the visibility of the fringes produced with respect to the force applied to a portion of the sensing arm. Ordinary single-mode fiber is used and no expensive polarization components are necessary. In addition, the visibility measurement is not sensitive to the ambient temperature fluctuation and no additional control measures are necessary to eliminate the effect of thermal drift.
URI: http://hdl.handle.net/10397/6457
ISSN: 0003-6935
DOI: 10.1364/AO.38.007163
Rights: © 1999 Optical Society of America. This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-34-7163. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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