Libish, T M and Linesh, J and Bobby, M C and Biswas, Palas and Bandyopadhyay, Somnath and Dasgupta, Kamal and Radhakrishnan, P (2011) Detection and analysis of paraffin oil adulteration in coconut oil using fiber optic long period grating sensor. Optik, 122 (21). pp. 1939-1942. ISSN 0030-4026

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Abstract

A fiber optic sensing system for the detection of adulteration of coconut oil by paraffin oil is experimentally demonstrated. The sensing mechanism is based on the sensitive dependence of the resonance peaks of a long period grating (LPG) on the changes of the refractive index of the environmental medium surrounding the cladding surface of the grating. The wavelength shift of the attenuation bands of the LPG was measured with the sensor immersed in a mixture of paraffin oil and pure coconut oil in different proportions. Detection limit of adulteration was found to be 3% for coconut oil paraffin oil binary mixture. (C) 2010 Elsevier GmbH. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Long period grating; Coconut oil adulteration; Refractive index sensor; Optical fiber sensor
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Jan 2012 12:13
Last Modified:	28 Mar 2016 16:48
URI:	http://cgcri.csircentral.net/id/eprint/279

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