Integrated Platform for Robust Differential Refractive Index Sensor
Abstract
In this work, we demonstrate an integrated platform comprising a refractive index (RI) sensor based on Photonic Molecule (PM) that effectively mitigates the influence of environmental perturbations using a differential measurement scheme while providing high quality-factor (Q) resonances. The RI sensor consists of an exposed microdisk resonator coupled to an external clad microring resonator fabricated on silicon-on-insulator (SOI) platform. We report a RI sensitivity of 23 nm/RIU, achieving a limit of detection (LOD) of 1.6 x 10-3 refractive index units (RIU) with improved stability in a compact footprint of 40 x 40 {\mu}m2, representing a good solution for real-life applications in which measurement conditions are not easily controllable.
Cite
@article{arxiv.1912.02853,
title = {Integrated Platform for Robust Differential Refractive Index Sensor},
author = {Andre L. Moras and Valnir C. S. Junior and Mario C. M. M. Souza and Giuseppe A. Cirino and Antonio A. G. Von Zuben and Newton C. Frateschi and Luis A. M. Barea},
journal= {arXiv preprint arXiv:1912.02853},
year = {2019}
}