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Title: Power-referenced and self-calibrated PM-FBG vibroscope
Authors: Shang, L
Guo, T
Liu, F
Du, F
Zhang, Z
Guan, B
Tam, HY 
Albert, J
Keywords: Fiber optics sensors
Fiber optics
Issue Date: 2012
Publisher: Optical Society of America
Source: Asia Communications and Photonics Conference, OSA Technical Digest (online) (Optical Society of America, 2012), paper AS1E.4 How to cite?
Abstract: A compact vibration sensing probe, in which a short section of polarization-maintained (PM) fiber stub containing a normal straight fiber Bragg grating (FBG) is spliced to another single-mode fiber without any lateral offset, is proposed and experimentally demonstrated. Two groups of well-defined resonances with ~ 7 nm wavelength separation have been achieved in reflection. Among them, the recoupled cladding modes at short wavelength side are extremely sensitive to fiber bending and provide the real-time vibration information by cost-effective power detection. Meanwhile, the unwanted power fluctuations and temperature perturbations can be referenced out by monitoring the core mode resonances at the longest wavelength.
ISBN: 978-1-55752-957-2
DOI: 10.1364/ACPC.2012.AS1E.4
Rights: ACP Technical Digest © 2012 OSA
This paper was published in Asia Communications and Photonics Conference, OSA Technical Digest (online) and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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