High-sensitivity silicon nitride microring resonator opto-fluidic sensor
Optics
2026-01-28 v1
Abstract
Photonic integrated circuit devices can be used as refractometric opto-fluidic sensors to detect the presence of analytes in solution at low concentrations. In this work, we investigate the refractive index sensitivity of silicon nitride microring resonator based photonic integrated circuit fluidic sensors. The performance of a foundry fabricated sensor is measured over the C-band in the presence of liquid samples achieving a mean sensitivity of 579 nanometres per refractive index unit. This demonstration of a scalable, high-sensitivity opto-fluidic sensor, compatible with recognition marker surface functionalisation, opens the way to applications in environmental and bio-sensing.
Keywords
Cite
@article{arxiv.2601.19528,
title = {High-sensitivity silicon nitride microring resonator opto-fluidic sensor},
author = {Davey O. Armstrong and Sherif Ibrahim and Shirin Naserikarimvand and Simon Whelan and Owen J. Guy and Anthony J. Bennett and John P. Hadden},
journal= {arXiv preprint arXiv:2601.19528},
year = {2026}
}
Comments
5 pages, 3 figures