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Related Experiment Video

Updated: Jul 2, 2026

$Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing$

Synthesis and Operation of Fluorescent-core Microcavities for Refractometric Sensing

Published on: March 13, 2013

Coupled optical microcavities: an enhanced refractometric sensing configuration.

Yun-Feng Xiao¹, Venkat Gaddam, Lan Yang

¹Department of Electrical & Systems Engineering, Washington University in St Louis, MO 63130, USA.

|August 20, 2008

Summary

This summary is machine-generated.

Coupled optical microcavities offer enhanced sensitivity for refractive index sensing due to sharp Fano resonances. Thermal and optical Kerr effects can further boost sensor performance.

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Area of Science:

Optics and Photonics
Sensing Technologies

Background:

Optical microcavities are widely used in sensing applications.
Fano resonances in coupled systems offer unique optical properties.

Purpose of the Study:

To theoretically investigate coupled optical microcavities for refractive index sensing.
To explore methods for enhancing sensor sensitivity.

Main Methods:

Theoretical analysis of coupled optical microcavity systems.
Modeling of Fano resonance characteristics.
Simulation of sensor response to refractive index changes.

Main Results:

Coupled microcavities exhibit sharp asymmetrical Fano resonances.
These resonances lead to faster output transmission changes compared to single cavities.
Enhanced sensitivity to refractive index variations was observed.

Conclusions:

Coupled optical microcavities show significant potential as high-sensitivity refractive index sensors.
Sensitivity can be further improved by utilizing thermal and optical Kerr effects.