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Miniaturized fiber-optic Michelson-type interferometric sensorsA novel, miniaturized Michelson-type fiber-optic interferometric sensor that is relatively insensitive to temperature drifts is presented. A fused-biconical tapered coupler is cleaved immediately after the coupled length and polished down to the region of the fused cladding, but short of the interaction region. The end of one core is selectively coated with a reflective surface and is used as the reference arm; the other core serves as the sensing arm. The detection of surface acoustic waves, microdisplacements, and magnetic fields is reported. The sensor is shown to be highly stable in comparison to a classic homodyne, uncompensated Michelson interferometer, and signal-to-noise ratios of 65 dB have been obtained.
Document ID
19920037716
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Murphy, Kent A.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Miller, William V., III
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Tran, Tuan A.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Vengsarkar, Ashish M.
(Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Claus, Richard O.
(Virginia Polytechnic Institute and State University Blacksburg, United States)
Date Acquired
August 15, 2013
Publication Date
December 1, 1991
Publication Information
Publication: Applied Optics
Volume: 30
ISSN: 0003-6935
Subject Category
Instrumentation And Photography
Accession Number
92A20340
Funding Number(s)
CONTRACT_GRANT: NAS1-18471
Distribution Limits
Public
Copyright
Other

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