DC calibration of the strain sensitivity of a single mode optical fiber interferometerThe strain sensitivity of an optical fiber interferometer developed for the detection of pulsed ultrasonic waves in solids was calibrated. Light from the output ends of both fibers was superimposed to form an interference fringe pattern that was interrogated in the far field to give a signal proportional to the differential optical fiber path length. Strain sensitivity is determined by comparing data obtained by clamping and bending the bar at different lengths to simple cantilever beam theory. A minimum theoretical detectable strain of less than 10 to the minus 10th power is indicated.
Document ID
19820003251
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Claus, R. O. (Virginia Polytechnic Inst. and State Univ. Blackburg, United States)
Cantrell, J. H., Jr. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1981
Publication Information
Publication: Va. Polytech. Inst. and State Univ. Opt. Fiber Interferometer for the Study of Ultrasonic Waves in Composite Mater.
Subject Category
Composite Materials
Accession Number
82N11124
Distribution Limits
Public
Copyright
Other
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IDRelationTitle19820003248Collected WorksOptical fiber interferometer for the study of ultrasonic waves in composite materials