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Proceedings Paper

Optical sensors of bulk refractive index using optical fiber resonators
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Paper Abstract

Optical fiber resonator (OFR) sensor is presented for bulk liquid refractive index (RI) sensing. The sensing mechanism relies on the spectral shifts of whispering gallery modes (WGMs) of OFRs which are excited using a tapered fiber. OFR liquid RI sensor is fully characterized using water solutions of ethanol and ethylene glycol (EG). A good agreement is achieved between the analytical calculations and experimental results for both TE and TM polarizations. The detection limit for bulk RI is calculated to be between 2.7 – 4.7 × 10−5 refractive index unit (RIU). The OFR sensor provides a robust, easy-to-fabricate and sensitive liquid refractive index sensor which can be employed in lab-on-a-chip applications.

Paper Details

Date Published: 16 May 2017
PDF: 7 pages
Proc. SPIE 10231, Optical Sensors 2017, 102312U (16 May 2017); doi: 10.1117/12.2270740
Show Author Affiliations
M. Eryürek, Koç Univ. (Turkey)
Y. Karadag, Koç Univ. (Turkey)
M. Ghafoor, Koç Univ. (Turkey)
N. Bavili, Koç Univ. (Turkey)
K. Cicek, Koç Univ. (Turkey)
Iğdır Univ. (Turkey)
A. Kiraz, Koç Univ. (Turkey)

Published in SPIE Proceedings Vol. 10231:
Optical Sensors 2017
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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