High-resolution absolute frequency referenced fiber optic sensor for quasi-static strain sensing
Date
Authors
Lam, Timothy T.-Y.
Chow, Jong H.
Shaddock, Daniel A.
Littler, Ian C. M.
Gagliardi, Gianluca
Gray, Malcolm B.
McClelland, David E.
Journal Title
Journal ISSN
Volume Title
Publisher
Optical Society of America
Abstract
We present a quasi-static fiber optic strain sensing system capable of resolving signals below nanostrain
from 20 mHz. A telecom-grade distributed feedback CW diode laser is locked to a fiber Fabry–Perot
sensor, transferring the detected signals onto the laser. An H13C14N absorption line is then used as a
frequency reference to extract accurate low-frequency strain signals from the locked system.
Description
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Citation
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Source
Applied Optics
Type
Book Title
Entity type
Access Statement
Open Access