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Updated: Jan 30, 2026
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
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Analytical method for metal-insulator-metal surface plasmon polaritons waveguide networks
Optics Express
|January 16, 2019
Summary
This study introduces an analytical Green's function method to efficiently analyze metal-insulator-metal (MIM) surface plasmon polaritons (SPPs) waveguide networks, offering a physically transparent approach for electromagnetic wave transmission.
Area of Science:
- Photonics and Nanophotonics
- Electromagnetism and Wave Propagation
- Materials Science
Background:
- Metal-insulator-metal (MIM) waveguides supporting surface plasmon polaritons (SPPs) are crucial for nanoscale optical devices.
- Existing methods for analyzing SPP transmission in MIM waveguides often lack physical transparency or completeness.
- Understanding electromagnetic wave propagation in complex MIM waveguide geometries is essential for device design.
Purpose of the Study:
- To develop a physically transparent and complete analytical method for investigating electromagnetic wave transmission in SPP MIM waveguide networks.
- To model and compare the transmission characteristics of MIM waveguides with weakly-coupled versus strongly-coupled side stubs.
- To derive straightforward analytical expressions for transmittance in single stub and cavity configurations.
Main Methods:
- Development of an analytical approach based on the Green's function method.
- Application of the method to model MIM waveguide geometries with varying coupling strengths (weak vs. strong).
- Incorporation of electromagnetic field leakage at the metal-insulator interface to account for weak coupling.
Main Results:
- Analytical expressions for transmittance were obtained for single stub and cavity configurations.
- The method effectively models electromagnetic wave transmission in MIM waveguide networks.
- Demonstrated excellent computational efficiency compared to numerical solutions of Maxwell's equations.
- Distinguished transmission behaviors between weakly-coupled and strongly-coupled stubs.
Conclusions:
- The Green's function method provides an efficient and physically transparent analytical tool for analyzing SPP MIM waveguide networks.
- This approach facilitates the design and optimization of nanoscale optical devices based on MIM waveguides.
- The developed method offers a significant computational advantage over traditional numerical techniques.
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