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Proceedings Paper

Phase sensitive signal analysis for bi-tapered optical fibers
Author(s): Amit Ben Harush Negari; Daniel Jauregui; Juan M. Sierra Hernandez; Diego Garcia Mina; Branden J. King; Ighodalo Idehenre; Peter E. Powers; Karolyn M. Hansen; Joseph W. Haus
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Paper Abstract

Our study examines the transmission characteristics of bi-tapered optical fibers, i.e. fibers that have a tapered down and up span with a waist length separating them. The applications to aqueous and vapor phase biomolecular sensing demand high sensitivity. A bi-tapered optical fiber platform is suited for label-free biomolecular detection and can be optimized by modification of the length, diameter and surface properties of the tapered region. We have developed a phase sensitive method based on interference of two or more modes of the fiber and we demonstrate that our fiber sensitivity is of order 10-4 refractive index units. Higher sensitivity can be achieved, as needed, by enhancing the fiber design characteristics.

Paper Details

Date Published: 9 March 2016
PDF: 10 pages
Proc. SPIE 9719, Biophysics, Biology, and Biophotonics: the Crossroads, 971907 (9 March 2016); doi: 10.1117/12.2208934
Show Author Affiliations
Amit Ben Harush Negari, Univ. of Dayton (United States)
Daniel Jauregui, Univ. de Guanajuato (Mexico)
Univ. of Dayton (United States)
Juan M. Sierra Hernandez, Univ. de Guanajuato (Mexico)
Univ. of Dayton (United States)
Diego Garcia Mina, Univ. of Dayton (United States)
Branden J. King, Univ. of Dayton (United States)
Ighodalo Idehenre, Univ. of Dayton (United States)
Peter E. Powers, Univ. of Dayton (United States)
Karolyn M. Hansen, Univ. of Dayton (United States)
Joseph W. Haus, Univ. of Dayton (United States)

Published in SPIE Proceedings Vol. 9719:
Biophysics, Biology, and Biophotonics: the Crossroads
Adam Wax; Vadim Backman, Editor(s)

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