Optical fiber static strain sensors: reliability issues

Indu Saxena; Kaleonui Hui

doi:10.1117/12.753523

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12 October 2007 Optical fiber static strain sensors: reliability issues

Indu Saxena, Kaleonui Hui

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Proceedings Volume 6770, Fiber Optic Sensors and Applications V; 67700C (2007) https://doi.org/10.1117/12.753523
Event: Optics East, 2007, Boston, MA, United States

Abstract

There is much interest in using optical fiber sensors for strain measurement because they are lightweight and are insensitive to electromagnetic interference. Structural monitoring applications can employ fiber Bragg gratings (FBGs) for point-by-point measurements, whereas continuous sensors, based on Brillouin scattering, can be used to measure strain along entire lengths of un-modified optical fibers. These two strain measurement methodologies, and their practical limitations, are compared. Accurate and reliable static strain measurement with FBGs, a turnkey instrumentation with multichannel detection ability, and embedding techniques with repeatable calibration ability are reported. Embedding techniques that survive high temperature cycling, and high humidity under salt water environments, have been developed.

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Indu Saxena and Kaleonui Hui "Optical fiber static strain sensors: reliability issues", Proc. SPIE 6770, Fiber Optic Sensors and Applications V, 67700C (12 October 2007); https://doi.org/10.1117/12.753523

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