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Theoretical Analysis of a Microring Resonator Array with High Sensitivity and Large Dynamic Range Based on a Multi-Scale Technique

1
School of Automation, China University of Geosciences, Wuhan 430074, China
2
Hubei key Laboratory of Advanced Control and Intelligent Automation for Complex Systems, Wuhan 430074, China
3
Department of Electronic and Electrical Engineering, University College London, London WC1E 7JE, UK
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(7), 1987; https://doi.org/10.3390/s18071987
Received: 1 May 2018 / Revised: 11 June 2018 / Accepted: 15 June 2018 / Published: 21 June 2018
(This article belongs to the Special Issue Optical Waveguide Based Sensors)
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Abstract

By using a multi-scale measurement technique, a high-sensitivity and large dynamic-range sensor array, which consisted of a single resonator and a series of cascaded resonators with a sensing ring and a reference ring, was modeled, and its transmission properties were investigated theoretically and numerically. We also set forth the principle of a multi-scale measurement technique based on the transmission spectrum of a resonator. This sensor array could have a nearly tenfold increase in sensitivity, and an improved dynamic range in an arrow wavelength range. The simulated results were in good agreement with the theoretical analysis. View Full-Text
Keywords: microring resonator; optical sensors; multi-scale technique; dynamic range; finite element method microring resonator; optical sensors; multi-scale technique; dynamic range; finite element method
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Mo, W.; Liu, H.; Jin, F.; Song, J.; Dong, K. Theoretical Analysis of a Microring Resonator Array with High Sensitivity and Large Dynamic Range Based on a Multi-Scale Technique. Sensors 2018, 18, 1987.

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