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Proceedings Paper

Optimally designed narrowband guided-mode resonance transmittance filters for label-free optical biosensor
Author(s): Phuc Toan Dang; Ji-Hoon Lee
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Paper Abstract

We design a practical guided-mode resonance filter excited in the visible light region. We show that high background transmission over 90% at resonance wavelengths of 623 nm and 641 nm for TE and TM polarizations, respectively. Also, we investigate the sensitivity of the filter to incident angles, polarization and the refractive index of the surrounding environment. Our filter provides the resonant transmission spectral response with high sensitivities of 90 nm/RIU and 103 nm/RIU, and with a figure of merits of 1.93 and 2.13 for TM and TE polarizations, respectively. A GMR with such characteristics is expected to hold great promise a practical label-free refractive index biosensor.

Paper Details

Date Published: 3 March 2020
PDF: 6 pages
Proc. SPIE 11276, Optical Components and Materials XVII, 112761K (3 March 2020); doi: 10.1117/12.2545941
Show Author Affiliations
Phuc Toan Dang, Jeonbuk National Univ. (Korea, Republic of)
Ji-Hoon Lee, Jeonbuk National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 11276:
Optical Components and Materials XVII
Shibin Jiang; Michel J. F. Digonnet, Editor(s)

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