Chemical sensing with microbent optical fiber

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Chemical sensing with microbent optical fiber

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Title: Chemical sensing with microbent optical fiber
Author: Thomas Lee, S; Nibu A, George; Sureshkumar, P; Radhakrishnan, P; Vallabhan, C P G; Nampoori, V P N
Abstract: We propose and demonstrate the possibility of using a permanently microbent bare optical fiber for detecting chemical species. Two detection schemes, viz., a bright-field detection scheme (for the core modes), and a dark-field detection scheme (for the cladding modes) have been employed to produce a fiber-optic sensor. The sensor described here is sensitive enough to detect concentrations as low as nanomoles per liter of a chemical species, with a dynamic range of more than 6 orders of magnitude.
URI: http://dyuthi.cusat.ac.in/purl/2403
Date: 2001-10-15


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