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Proceedings Paper

Bent optical fiber tapers for refractometery and biosensing
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Paper Abstract

We report the results of our study of the spectral shifts caused by surrounding refractive index changes (SRI) in bent fibre tapers. Fused and etched fibre tapers were fabricated using a gas burner and HF acid. Spectral shifts as high as 200 nm have been observed for SRI variations from 1.33 to 1.44 and sensitivity as high as 830 nm/r.i.u. around water RI values. We present results for refractometric measurements of cow milk of varying fat content and compare results with those obtained with conventional Abbe refractometers and high sensitivity double resonance LPGs.

Paper Details

Date Published: 8 January 2015
PDF: 7 pages
Proc. SPIE 9447, 18th International School on Quantum Electronics: Laser Physics and Applications, 944716 (8 January 2015); doi: 10.1117/12.2177916
Show Author Affiliations
Emil Penchev, Univ. of Food Technologies Plovdiv (Bulgaria)
Tinko Eftimov, Plovdiv Univ. "Paisii Hilendarski" (Bulgaria)
Wojtek Bock, Univ. du Québec en Outaouais (Canada)

Published in SPIE Proceedings Vol. 9447:
18th International School on Quantum Electronics: Laser Physics and Applications
Tanja Dreischuh; Sanka Gateva; Alexandros Serafetinides, Editor(s)

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