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Related Experiment Video

Updated: Dec 7, 2025

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

A Polarization-Actuated Plasmonic Circulator.

Tzu-Yu Chen¹, Dhruv Tyagi¹, Yun-Chorng Chang²

¹Institute of Photonics Technologies, National Tsing Hua University, Hsinchu 30013, Taiwan.

|September 28, 2020

Summary

This summary is machine-generated.

Researchers developed a novel plasmonic circulator using a two-wire transmission-line (TWTL) structure. This device controls surface plasmon polaritons (SPPs) using laser polarization, paving the way for advanced photonic nanocircuitry.

Keywords:

Surface plasmon polaritons coherent controls optical circulations optical nanocircuits polarization-selective controls

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Area of Science:

Photonics and Nanotechnology
Plasmonics
Optoelectronics

Background:

Surface plasmon polaritons (SPPs) are essential for nanoscale light manipulation.
Existing plasmonic devices often lack polarization control and tunability.
Two-wire transmission-line (TWTL) structures offer unique plasmonic modes.

Purpose of the Study:

To experimentally demonstrate a polarization-actuated plasmonic circulator.
To utilize the distinct plasmon modes of TWTLs for SPP circulation.
To achieve controllable and expandable SPP routing in nanocircuits.

Main Methods:

Fabrication of a plasmonic TWTL structure.
Excitation of SPPs using linearly and circularly polarized laser fields.
Design of coupling antennas for polarization-sensitive SPP circulation.

Main Results:

Successful experimental realization of a plasmonic circulator based on TWTL.
Demonstration of polarization-controlled SPP circulation.
Achieved a wide optical operational bandwidth of approximately 100 nm.
Showcased expandability in the number of ports.

Conclusions:

TWTLs enable polarization-actuated control of SPP circulation.
This work represents a significant advancement towards multifunctional photonic nanocircuitry.
The developed circulator offers a versatile platform for integrated plasmonic devices.