Micro-displacement sensor with multimode fused coupler and concave mirror

Harun, Sulaiman Wadi and Yasin, Moh and Ahmad, Harith (2011) Micro-displacement sensor with multimode fused coupler and concave mirror. Laser Physics, 21 (4). pp. 729-732. ISSN 1054-660X, DOI https://doi.org/10.1134/S1054660X11070103.

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Official URL: https://doi.org/10.1134/S1054660X11070103


Fiber optic displacement sensor is demonstrated using a multimode fused coupler probe and a concave mirror target. It is observed that a focal length of the concave mirror make a significant influence to the displacement response, which illustrates three linear slopes with the second slope peaks at the position that is in vicinity of two times of the focal length. The highest sensitivity of 0.56 mV/mm is obtained with an infinity focal length and it is decreased as the focal length of the concave mirror decreases. The widest linear range of approximately 3.3 mm is observed in the third slope region with focal length of 6.0 mm. The highest linear range obtained with the use of 50:50 coupler.

Item Type: Article
Uncontrolled Keywords: Coupler; Focal Length; Laser Phys; Displacement Sensor; Wide Linear Range
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 31 Dec 2018 10:20
Last Modified: 08 Apr 2019 05:11
URI: http://eprints.um.edu.my/id/eprint/19839

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