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3 March 2020 Optimally designed narrowband guided-mode resonance transmittance filters for label-free optical biosensor
Phuc Toan Dang, Ji-Hoon Lee
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Proceedings Volume 11276, Optical Components and Materials XVII; 112761K (2020) https://doi.org/10.1117/12.2545941
Event: SPIE OPTO, 2020, San Francisco, California, United States
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.
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Phuc Toan Dang and Ji-Hoon Lee "Optimally designed narrowband guided-mode resonance transmittance filters for label-free optical biosensor", Proc. SPIE 11276, Optical Components and Materials XVII, 112761K (3 March 2020); https://doi.org/10.1117/12.2545941
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KEYWORDS
Optical filters
Refractive index
Dielectric polarization
Waveguides
Polarization
Optical biosensors
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