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Sensors 2016, 16(9), 1505; doi:10.3390/s16091505

D-Shaped Polarization Maintaining Fiber Sensor for Strain and Temperature Monitoring

1
Faculty of Electrical Engineering, Universiti Teknologi Malaysia, UTM, Skudai, 81310 Johor, Malaysia
2
Photonics Research Centre, University of Malaya, 50603 Kuala Lumpur, Malaysia
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 31 May 2016 / Revised: 23 August 2016 / Accepted: 25 August 2016 / Published: 15 September 2016
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [1612 KB, uploaded 19 September 2016]   |  

Abstract

A D-shaped polarization-maintaining fiber (PMF) as fiber optic sensor for the simultaneous monitoring of strain and the surrounding temperature is presented. A mechanical end and edge polishing system with aluminum oxide polishing film is utilized to perform sequential polishing on one side (lengthwise) of the PMF in order to fabricate a D-shaped cross-section. Experimental results show that the proposed sensor has high sensitivity of 46 pm/µε and 130 pm/°C for strain and temperature, respectively, which is significantly higher than other recently reported work (mainly from 2013) related to fiber optic sensors. The easy fabrication method, high sensitivity, and good linearity make this sensing device applicable in various applications such as health monitoring and spatial analysis of engineering structures. View Full-Text
Keywords: fiber optic sensor; polarization-maintaining fiber; fiber loop mirror; strain sensor; temperature sensor; structural health monitoring fiber optic sensor; polarization-maintaining fiber; fiber loop mirror; strain sensor; temperature sensor; structural health monitoring
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Qazi, H.H.; Mohammad, A.B.; Ahmad, H.; Zulkifli, M.Z. D-Shaped Polarization Maintaining Fiber Sensor for Strain and Temperature Monitoring. Sensors 2016, 16, 1505.

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