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Updated: Jun 22, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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Surface plasmon polarization filtering in a single mode dielectric waveguide.

P Davids, B Block, K Cadien

|June 6, 2009

Summary

Metallic electrodes near dielectric waveguides excite surface plasmons, enabling mode polarization. Perpendicular polarization extinguishes the mode, while parallel polarization causes attenuation, verified experimentally.

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Area of Science:

Photonics and optical engineering
Plasmonics
Waveguide technology

Background:

Dielectric waveguides are fundamental in optical communication.
Controlling light polarization within waveguides is crucial for device functionality.
Surface plasmons offer unique light-matter interaction opportunities at the nanoscale.

Purpose of the Study:

To investigate the polarization control of guided modes using metallic electrodes.
To explore the excitation of surface plasmons for mode manipulation.
To analyze the impact of electrode geometry and spacing on waveguide transmission.

Main Methods:

Fabrication of a single-mode dielectric waveguide with symmetrically placed metallic electrodes.
Experimental measurement of optical transmission as a function of incident light polarization.
Analysis of electrode spacing and its effect on surface plasmon excitation.
Verification of phase-matching conditions for surface plasmon resonance.

Main Results:

Resonant excitation of surface plasmons by modes polarized perpendicular to the metal surface, leading to mode extinction.
Mode attenuation for light polarized parallel to the metal surface due to metal presence.
Demonstration of effective mode polarization control via electrode configuration.
Experimental validation of polarization-dependent insertion loss.

Conclusions:

Metallic electrodes can act as effective polarizers for single-mode dielectric waveguides through surface plasmon excitation.
The polarization state of light significantly influences its interaction with the metal-dielectric interface.
This approach offers a pathway for developing novel integrated optical polarization components.