Experimental demonstration of a simple displacement sensor based on a bent single-mode–multimode–single-mode fiber structure

Wu, Qiang, Semenova, Yuliya, Wang, Pengfei, Hatta, Agus and Farrell, Gerald (2011) Experimental demonstration of a simple displacement sensor based on a bent single-mode–multimode–single-mode fiber structure. Measurement Science and Technology, 22 (2). 025203. ISSN 0957-0233

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Official URL: http://dx.doi.org/10.1088/0957-0233/22/2/025203

Abstract

A simple displacement sensor based on a bent single-mode–multimode–single-mode (SMS) fiber structure is proposed and experimentally investigated. The sensor offers a wider displacement range, not limited by the risk of fiber breakage, as well as a three-fold increase in displacement sensitivity by comparison with a straight SMS structure sensor. This sensor can be interrogated by either an optical spectral analyzer (OSA) or a ratiometric interrogation system: (1) if interrogated by an OSA assuming a resolution of 1 pm, it has a sensitivity of 28.2 nm for a displacement measurement range from 0 to 280 µm; (2) if interrogated by a ratiometric interrogation system, it has worst and best case resolutions of 556 and 38 nm, respectively, for a displacement measurement range from 0 to 520 µm.

Item Type: Article
Subjects: F300 Physics
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Ay Okpokam
Date Deposited: 26 May 2015 11:47
Last Modified: 24 Oct 2017 08:53
URI: http://nrl.northumbria.ac.uk/id/eprint/22565

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