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Open AccessArticle

Guided Mode Resonance Sensors with Optimized Figure of Merit

Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Department of Optical Science and Engineering, Shanghai Engineering Research Center of Ultra Precision Optical Manufacturing, Fudan University, Shanghai 200433, China
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Nanomaterials 2019, 9(6), 837; https://doi.org/10.3390/nano9060837
Received: 6 May 2019 / Revised: 21 May 2019 / Accepted: 22 May 2019 / Published: 1 June 2019
(This article belongs to the Special Issue Dynamics and Applications of Photon-Nanostructured Systems)
The guided mode resonance (GMR) effect is widely used in biosensing due to its advantages of narrow linewidth and high efficiency. However, the optimization of a figure of merit (FOM) has not been considered for most GMR sensors. Aimed at obtaining a higher FOM of GMR sensors, we proposed an effective design method for the optimization of FOM. Combining the analytical model and numerical simulations, the FOM of “grating–waveguide” GMR sensors for the wavelength and angular shift detection schemes were investigated systematically. In contrast with previously reported values, higher FOM values were obtained using this method. For the “waveguide–grating” GMR sensors, a linear relationship between the grating period and groove depth was obtained, which leads to excellent FOM values for both the angular and wavelength resonance. Such higher performance GMR sensors will pave the way to lower detection limits in biosensing. View Full-Text
Keywords: guided mode resonance; figure of merit; biosensor; detection limits guided mode resonance; figure of merit; biosensor; detection limits
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MDPI and ACS Style

Zhou, Y.; Wang, B.; Guo, Z.; Wu, X. Guided Mode Resonance Sensors with Optimized Figure of Merit. Nanomaterials 2019, 9, 837.

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