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Differential Optical Sensing through Coupled Micro Ring Resonators

Authors:
Ali Emre Kaplan
Gaetano Bellanca
Paolo Bassi

Keywords: Micro ring resonators, Optical sensing, Integrated photonic circuits.

Abstract:
We theoretically investigate the performance of a double micro ring resonator for integrated optical sensing applications. The transmission characteristics of the proposed device can be driven in two distinct operations by controlling the difference of the round-trip phase shifts of the coupled resonators. The enhancement of the limit of detection by a factor of 5.6 compared to a single micro ring based sensor is demonstrated. Beside the fact that the single and double ring based schemes have the same spectral wavelength sensitivity of 918 nm per refractive index unit, the latter scheme also supports the intensity interrogation which can be used for on-chip thermal noise compensation via integrated micro heaters.

Pages: 7 to 10

Copyright: Copyright (c) IARIA, 2019

Publication date: October 27, 2019

Published in: conference

ISSN: 2308-3530

ISBN: 978-1-61208-749-8

Location: Nice, France

Dates: from October 27, 2019 to October 31, 2019