Simultaneous measurement of aliphatic alcohol concentration and temperature based on etched taper FBG

Yang, H.Z. and Qiao, X.G. and Rajibul, I.M. and Lim, K.S. and Ahmad, Harith (2014) Simultaneous measurement of aliphatic alcohol concentration and temperature based on etched taper FBG. Sensors and Actuators B: Chemical, 202. pp. 959-963. ISSN 0925-4005

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Abstract

A broadband fiber Bragg grating based on etch tapering is demonstrated for simultaneous sensing of aliphatic alcohol concentration and temperature. Chemical etching approach is used to produce a decaying exponential shape FBG. A reflection bandwidth of 20.08 nm is obtained when the smallest fiber radius as small as 2.2 μm is achieved. In the analysis, the bandwidth of the reflection spectrum is evaluated for measuring the refractive index whereas the wavelength shift of the resonant peak is evaluated for the temperature change. The experiment results indicate that the proposed sensor has a maximum sensitivity of 428.07 nm/RIU at the RI value of 1.3265, a temperature sensitivity of 9.9 pm/°C, and a bandwidth sensitivity of 0.92 pm/°C is finding at methanol concentration of 10%.

Item Type: Article
Uncontrolled Keywords: Etched taper FBG; Decaying exponential shape; Aliphatic alcohol concentration measurement; Temperature measurement
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Oct 2015 01:20
Last Modified: 11 Oct 2018 02:55
URI: http://eprints.um.edu.my/id/eprint/14304

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