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Browse Journals & Magazines > Sensors Journal, IEEE ...> Volume:12 Issue:7 Help

Analysis of \pi -Phase-Shifted Fiber Bragg Gratings for Ultrasonic Detection

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2 Author(s)
Tongqing Liu ; Univ. of Nebraska-Lincoln, Lincoln, NE, USA ; Ming Han

Using numerical simulations, we investigated the responses of the π -phase-shifted fiber Bragg gratings (πFBGs) impinged by pressure ultrasonic waves. The effect of the grating length, grating refractive index modification depth, and ultrasonic frequency on the wavelength sensitivity and intensity sensitivity of the πFBG ultrasonic sensor for ultrasonic waves of different wavelengths was analyzed. The directivity of a πFBG sensor was also studied. Our analysis revealed several unique πFBG response characteristics and will be useful in the design and optimization of fiber-optic ultrasonic sensors that use a πFBG as the sensing element.

Published in:
Sensors Journal, IEEE  (Volume:12 ,  Issue: 7 )

Date of Publication: July 2012

Page(s):
2368 - 2373
ISSN :
1530-437X
INSPEC Accession Number:
12761282
Digital Object Identifier :
10.1109/JSEN.2012.2189383
Product Type:
Journals & Magazines
Date of Publication :
06 March 2012
Date of Current Version :
25 May 2012
Issue Date :
July 2012
Sponsored by :
IEEE Sensors Council

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