Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6510
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Title: Locating acoustic emission with an amplitude-multiplexed acoustic sensor array based on a modified Mach-Zehnder interferometer
Authors: Gong, JM
MacAlpine, M
Jin, W 
Liao, YB
Issue Date: 1-Dec-2001
Source: Applied optics, 1 Dec. 2001, v. 40, no. 34, p. 6199-6202
Abstract: We report on an amplitude-division-multiplexed interferometric sensor array for locating acoustic emission. Preliminary experiments were carried out with a modified Mach-Zehnder interferometer consisting of two sensing arms and a reference arm and demonstrated a one-dimensional location accuracy of a few centimeters. The system can be extended for two- and three-dimensional location of acoustic emissions by the addition of one or two more sensing arms, respectively, in the interferometer.
Keywords: Acoustic emission testing
Electromagnetic fields
Interferometers
Light sources
Multiplexing
Oil filled transformers
Publisher: Optical Society of America
Journal: Applied optics 
ISSN: 0003-6935
DOI: 10.1364/AO.40.006199
Rights: © 2001 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-40-34-6199. 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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