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Updated: Jan 25, 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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Tapered Long-Range Surface Plasmon Polariton Waveguides with a Gap
Dong Hun Lee1, Myung-Hyun Lee1
1School of Electronic and Electrical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-Do, 16419, Korea.
Journal of Nanoscience and Nanotechnology
|April 28, 2019
Summary
We developed tapered gap plasmonic waveguides (G-SPPWs) to enhance tunneling efficiency. These structures reduce insertion loss, showing potential for efficient plasmonic modulation devices.
Area of Science:
- Photonics and Plasmonics
- Nanotechnology
- Optical Engineering
Background:
- Long-range surface plasmon polariton (LR-SPP) waveguides are crucial for optical communication.
- Gap plasmon polariton waveguides (G-SPPWs) offer unique light confinement properties.
- Improving tunneling efficiency in G-SPPWs is essential for device performance.
Purpose of the Study:
- To propose and investigate tapered G-SPPWs for enhanced tunneling efficiency.
- To experimentally validate the performance of tapered G-SPPWs against simulations.
- To demonstrate the potential of tapered G-SPPWs in plasmonic modulation devices.
Main Methods:
- Fabrication of tapered G-SPPWs.
- Experimental measurement of optical characteristics, including insertion loss.
- Comparison of experimental data with simulation results.
Main Results:
- Tapered G-SPPWs demonstrated reduced insertion loss compared to straight G-SPPWs (~0.74 dB vs ~1.03 dB).
- The proposed tapered structure significantly improves tunneling efficiency.
- Experimental results align well with simulation predictions.
Conclusions:
- Tapered G-SPPWs offer a viable solution for improving tunneling efficiency in plasmonic devices.
- The reduced insertion loss makes them suitable for efficient plasmonic modulation.
- Further development could lead to advanced optical communication components.
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