Temperature-insensitive pressure transducer based on reflected broadened spectrum with enhanced sensitivity

Vorathin, E. and Hafizi, Z.M. and Aizzuddin, A.M. and Lim, Kok Sing (2019) Temperature-insensitive pressure transducer based on reflected broadened spectrum with enhanced sensitivity. Sensors and Actuators A: Physical, 288. pp. 61-66. ISSN 0924-4247, DOI https://doi.org/10.1016/j.sna.2019.01.028.

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Official URL: https://doi.org/10.1016/j.sna.2019.01.028

Abstract

Pasting of half the grating of an FBG sensor on a natural rubber diaphragm was used to sense the pressure measurement. The pressure-induced strain on half of the grating resulted in bandwidth broadening. From the pressure range of 0 kPa to 20 kPa, the pressure sensitivity at 15 dB bandwidth changed was obtained at 77.7 pm/kPa with 99.94% of linearity. Through total reflected power monitoring via photodetector, the pressure transducer retrieved a sensitivity of 0.1686 dB m/kPa and evaded a complex demodulation technique. As a result of the temperature-independent bandwidth change, the pressure transducer was totally temperature insensitive. © 2019 Elsevier B.V.

Item Type: Article
Funders: UNSPECIFIED
Uncontrolled Keywords: Fibre Bragg grating (FBG); Pressure sensor; Pressure transducer; Temperature-insensitive
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 03 Dec 2019 07:44
Last Modified: 03 Dec 2019 07:44
URI: http://eprints.um.edu.my/id/eprint/23196

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