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Optical Fibers Would Sense Local StrainsProposed fiber-optic transducers measure local strains. Includes lead-in and lead-out lengths producing no changes in phase shifts, plus short sensing length in which phase shift is sensitive to strain. Phase shifts in single-mode fibers vary with strains. In alternative version, multiple portions of optical fiber sensitive to strains characteristic of specific vibrational mode of object. Same principle also used with two-mode fiber.
Document ID
19940000102
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Egalon, Claudio O.
(Analytical Services and Materials, Inc.)
Rogowski, Robert S.
(NASA Langley Research Center, Hampton, VA.)
Date Acquired
August 16, 2013
Publication Date
February 1, 1994
Publication Information
Publication: Laser Tech. Brief.
Volume: 2
Issue: 1
Subject Category
Physical Sciences
Report/Patent Number
LAR-14810
Accession Number
94B10102
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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