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

Vorathin, E. and Z. M., Hafizi and A. M., Aizzuddin and K. S., Lim (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

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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.

Item Type: Article
Uncontrolled Keywords: Fibre Bragg grating (FBG); Pressure sensor; Pressure transducer; Temperature-insensitive
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Noorul Farina Arifin
Date Deposited: 25 Feb 2019 08:24
Last Modified: 25 Feb 2019 08:24
URI: http://umpir.ump.edu.my/id/eprint/24265
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