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Updated: May 26, 2026

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Published on: December 27, 2012

A microring resonator based negative permeability metamaterial sensor.

Jun Sun1, Ming Huang, Jing-Jing Yang

  • 1School of Information Science and Engineering, Yunnan University, Kunming 650091, China. em.junsun@gmail.com

Sensors (Basel, Switzerland)
|December 14, 2011
PubMed
Summary

This study demonstrates that negative permeability metamaterial (NPM) sensors enhance microring resonator sensitivity. The metamaterial sensor design offers significantly increased sensitivity for advanced sensor applications.

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Area of Science:

  • Materials Science
  • Electromagnetics
  • Nanotechnology

Background:

  • Metamaterials derive properties from structure, not composition, offering novel sensing capabilities.
  • Dielectric waveguides and microring resonators are key components in optical sensing.
  • Negative permeability metamaterials (NPMs) exhibit unique electromagnetic properties.

Purpose of the Study:

  • To theoretically analyze a cylindrical dielectric waveguide loaded with an NPM layer.
  • To investigate the impact of NPM loading on Whispering-Gallery-Modes (WGMs).
  • To evaluate the sensitivity enhancement of NPM-based microring resonator sensors.

Main Methods:

  • Derivation of the dispersion relation for the loaded waveguide.
  • Computation of resonant frequencies and electric field distributions.
Keywords:
WGMsmetamaterialsmicroring resonatorsensor

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  • Validation of theoretical results using full-wave simulations.

    • Main Results:

    • Theoretical predictions for resonant frequencies and electric fields align with simulation data.
    • NPM sensors show higher sensitivity compared to traditional microring sensors.
    • Sensitivity increases with evanescent wave amplification and NPM layer thickness.

    Conclusions:

    • NPM-loaded microring resonators offer a pathway to highly sensitive sensors.
    • The demonstrated sensor design enables tailored sensitivity for specific applications.
    • This work advances the development of next-generation sensing technologies.