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

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

Published on: July 21, 2018

Efficient light coupling between dielectric slot waveguide and plasmonic slot waveguide.

Ruoxi Yang¹, Rami A Wahsheh, Zhaolin Lu

¹Microsystems Engineering, Kate Gleason College of Engineering, Rochester Institute of Technology, Rochester, New York 14623, USA.

|March 3, 2010

Summary

This summary is machine-generated.

Researchers developed an efficient coupler for dielectric and metal-insulator-metal (MIM) waveguides. This silicon-based device achieves up to 43% coupling efficiency, enabling potential applications in optical switching and modulation.

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Area of Science:

Photonics and Nanophotonics
Materials Science
Electrical Engineering

Background:

Dielectric waveguides and plasmonic waveguides offer distinct advantages for optical signal manipulation.
Efficiently coupling light between these waveguide types is crucial for integrated photonic circuits.
Existing coupling methods often face limitations in efficiency and footprint.

Purpose of the Study:

To propose, model, fabricate, and characterize an efficient coupler between silicon dielectric waveguides and metal-insulator-metal (MIM) plasmonic waveguides.
To investigate a novel quasi-MIM plasmonic junction design.
To demonstrate the potential for compact and high-performance optical devices.

Main Methods:

Utilized a silicon slot waveguide platform.
Fabricated a quasi-MIM plasmonic junction using e-beam lithography and a lift-off process.
Characterized the coupling efficiency at 1550 nm wavelength.

Main Results:

Achieved a coupling efficiency of up to 43% between the silicon slot waveguide and the plasmonic waveguide.
Normalized efficiency measurements against reference waveguides.
Demonstrated a functional coupler through fabrication and characterization.

Conclusions:

The proposed coupler provides an efficient interface between dielectric and plasmonic waveguides.
This technology holds promise for developing fast optical switches and small-footprint optical modulators.
The silicon-based platform offers a viable route for integrated plasmonic devices.