Bent optical fiber tapers for refractometery and biosensing

Emil Penchev; Tinko Eftimov; Wojtek Bock

doi:10.1117/12.2177916

8 January 2015 Bent optical fiber tapers for refractometery and biosensing

Emil Penchev, Tinko Eftimov, Wojtek Bock

Proceedings Volume 9447, 18th International School on Quantum Electronics: Laser Physics and Applications; 944716 (2015) https://doi.org/10.1117/12.2177916
Event: Eighteenth International School on Quantum Electronics: Laser Physics and Applications, 2014, Sozopol, Bulgaria

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.

Citation Download Citation

Emil Penchev, Tinko Eftimov, and Wojtek Bock "Bent optical fiber tapers for refractometery and biosensing", Proc. SPIE 9447, 18th International School on Quantum Electronics: Laser Physics and Applications, 944716 (8 January 2015); https://doi.org/10.1117/12.2177916

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