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Updated: May 13, 2026

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment
09:13

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment

Published on: April 4, 2017

Submicron bidirectional all-optical plasmonic switches.

Jianjun Chen1, Zhi Li, Xiang Zhang

  • 1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China. chernmore@pku.edu.cn

Scientific Reports
|March 15, 2013
PubMed
Summary
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Researchers developed a submicron all-optical plasmonic switch using an asymmetric T-shape slit. This device enables efficient, bidirectional control of surface plasmon polaritons for integrated photonic circuits.

Area of Science:

  • Optoelectronics
  • Nanophotonics
  • Plasmonics

Background:

  • Ultra-small all-optical switches are crucial for advanced optical communication and computing.
  • Weak nonlinear light-matter interactions in conventional materials hinder efficient switching at short lengths.

Purpose of the Study:

  • To experimentally demonstrate a submicron bidirectional all-optical plasmonic switch.
  • To overcome the limitations of weak light-matter interactions in miniaturized devices.

Main Methods:

  • Fabrication of a submicron switch featuring an asymmetric T-shape single slit.
  • Utilizing symmetry-breaking to achieve sharp asymmetric spectra and field enhancements.

Main Results:

  • Achieved significant field enhancements (approx. 18x conventional slit).

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Published on: July 8, 2013

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Last Updated: May 13, 2026

Plasmonic Trapping and Release of Nanoparticles in a Monitoring Environment
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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

  • Demonstrated simultaneous, inverse all-optical control of bidirectional surface plasmon polaritons.
  • Obtained on/off switching ratios greater than 6 dB for a device dimension < 1 μm.

    • Conclusions:

    • The submicron bidirectional all-optical plasmonic switch integrates free-space light coupling and on-chip switching.
    • This technology holds promise for highly integrated plasmonic circuits and optical networks.