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Updated: May 31, 2026
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Wide-range coupling between surface plasmon polariton and cylindrical dielectric waveguide mode.
Van Duong Ta1, Rui Chen, Han Dong Sun
1Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore.
Optics Express
|July 13, 2011
Summary
A novel hybrid waveguide design enhances light propagation and coupling. Circular capillary tubes show stronger surface plasmon polariton coupling than dielectric wires, confining electric fields effectively.
Area of Science:
- Photonics and Plasmonics
- Materials Science
Background:
- Hybrid waveguides offer unique light manipulation properties.
- Surface plasmon polaritons (SPPs) enable subwavelength light confinement.
- Efficient coupling between SPPs and waveguide modes is crucial for device performance.
Purpose of the Study:
- To propose and systematically study a modified hybrid waveguide.
- To compare the performance of dielectric wire and circular capillary tube structures.
- To investigate the coupling efficiency and electric field confinement.
Main Methods:
- Application of coupled mode theory for systematic analysis.
- Comparative simulation of two distinct waveguide structures (dielectric wire vs. circular capillary tube).
- Analysis of structures buried in a polymer matrix with a silver substrate gap.
Main Results:
- The circular capillary tube structure exhibits stronger coupling between SPPs and waveguide modes compared to the dielectric wire.
- Electric fields are highly confined within the gap region of the waveguide.
- The confined electric field demonstrates long propagation distances, extending to several hundred micrometers.
Conclusions:
- Modified hybrid waveguides, particularly those with circular capillary tubes, show promise for enhanced light propagation and coupling.
- The design facilitates strong light-matter interaction and efficient energy transfer.
- This research contributes to the development of advanced plasmonic and photonic devices.
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