Two-channel fiber Bragg-grating strain sensor with high-resolution interferometric wavelength-shift detection

Autor:	W. W. Morey, Timothy A. Berkoff, Alan D. Kersey
Rok vydání:	1993
Předmět:	PHOSFOS Optical fiber Materials science business.industry Polarization-maintaining optical fiber Long-period fiber grating law.invention Optics Fiber Bragg grating law Fiber optic sensor Optoelectronics Dispersion-shifted fiber Plastic optical fiber business
Zdroj:	SPIE Proceedings.
ISSN:	0277-786X
DOI:	10.1117/12.141334
Popis:	We describe results obtained with a two-channel fiber optic grating sensor system using interferometric determination of strain-induced Bragg-wavelength shifts. The system provides high resolution to quasi-static and dynamic strain perturbations of the gratings in the system. Results demonstrating the detection of low frequency (about 1 Hz) strain levels of about 6 nanostrain/sq rt Hz in a 3-point bending flexural beam experiment are presented.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Databáze:	OpenAIRE
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