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Opt Lett. 1998 Dec 15;23(24):1930-2.

Highly sensitive dynamic strain measurements by locking lasers to fiber Bragg gratings.

Abstract

A novel, sensitive, simple, and robust strain interrogation technique is analyzed and experimentally tested. By locking a laser wavelength to the midreflection wavelength of a standard fiber Bragg grating and measuring the error signal, we achieve high dynamic strain sensitivity of 45 picostrain/ radicalHz rms at 3 kHz, where the dominant noise in the experiment is the laser frequency noise.

PMID:
18091959
[PubMed]
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