A sensitive fibre optic pH sensor using multiple sol–gel coatings

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A sensitive fibre optic pH sensor using multiple sol–gel coatings

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dc.contributor.author Radhakrishnan, P
dc.contributor.author V P N Nampoori
dc.contributor.author Girijavallabhan, C P
dc.contributor.author Thomas Lee, S
dc.contributor.author Jose, Gin
dc.contributor.author Unnikrishnan, N V
dc.date.accessioned 2010-07-12T10:35:24Z
dc.date.available 2010-07-12T10:35:24Z
dc.date.issued 2001-07-12
dc.identifier.citation International School of Photonics, Cochin University of Science and Technology en_US
dc.identifier.other J. Opt. A: Pure Appl. Opt. 3 (2001) 355–359
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/1773
dc.description.abstract The fabrication and characterization of a fibre optic pH sensor based on evanescent wave absorption is presented. The unclad portion of a multi-mode optical fibre is coated with a pH sensitive dye, which is immobilized by the sol–gel route. The sensitivity of the device has been found to increase when multiple sol–gel coatings are used as the sensing region. The dynamic range and the temporal response of the sensor are investigated for two different dyes, namely bromocresol purple and bromocresol green. The performance of the device is evaluated in terms of the results obtained during actual measurements en_US
dc.language.iso en en_US
dc.publisher Journal of Optics A: Pure and Applied Optics en_US
dc.subject Fibre optics en_US
dc.subject optical fibre en_US
dc.subject evanescent wave en_US
dc.subject sensor en_US
dc.subject pH en_US
dc.subject sol–gel en_US
dc.subject absorption en_US
dc.subject multi-layer en_US
dc.title A sensitive fibre optic pH sensor using multiple sol–gel coatings en_US
dc.type Working Paper en_US


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