Cascaded Acoustic Wave Sensors Based on Erbium-Doped Fiber Laser Dynamics for Intrusion Zone Identification

Woon, Sin Ling and Kwan, Kar Meng and Chong, Wu Yi and Lin, Horng Sheng and Pua, Chang Hong (2017) Cascaded Acoustic Wave Sensors Based on Erbium-Doped Fiber Laser Dynamics for Intrusion Zone Identification. IEEE Sensors Journal, 17 (6). pp. 1893-1898. ISSN 1530-437X

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Official URL: https://doi.org/10.1109/JSEN.2017.2655019

Abstract

Optical based acoustic wave sensors have been implemented recently for intrusion detection. These sensors commonly involve the use of an optical time-domain reflectometer to pinpoint location, which is costly and slow. This paper reports on an acoustic sensor based on laser transient of an erbium-doped fiber laser (EDFL) which offers almost instantaneous response to external perturbations. The proposed sensor is cost-effective, simple with fast response time and is able to detect high frequency vibrations. In addition, the inherent high sensitivity of the sensor enables it to sense airborne acoustic wave. Zone identification capability was demonstrated using a sensor setup with two EDFLs. The time delay due to the relative positions of the two fibers allows the user to identify the position of the impact. The sensing length can be easily increased for long range zone identification with length up to 25 km.

Item Type: Article
Uncontrolled Keywords: acoustic sensor; EDFL; Long range; perimeter sensing
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 21 Oct 2019 07:06
Last Modified: 21 Oct 2019 07:06
URI: http://eprints.um.edu.my/id/eprint/22777

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