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Fiber ring resonator using a cavity ring‐down interrogation technique for curvature sensing
Author(s) -
Magalhães R.,
Silva S. O.,
Frazão O.
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29547
Subject(s) - curvature , radius of curvature , resonator , optics , radius , materials science , microwave , interrogation , ring (chemistry) , grating , acoustics , physics , geometry , computer science , mathematics , mean curvature , computer security , archaeology , organic chemistry , mean curvature flow , quantum mechanics , chemistry , history
In this work, it is demonstrated a fiber ring resonator connected to an interrogation system usually implemented on a cavity ring‐down technique. A long‐period grating (LPG) was inserted in the resonant cavity, being operated as a curvature sensor. The experimental results demonstrate that using this setup, different sensitivities can be achieved in terms of analyzing decay time over the radius of the curvature and over curvature. The LPG sensor presented higher sensitivity with larger radius of curvature, namely 6.91 μs/m. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:267–270, 2016