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Updated: May 8, 2026

Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
07:28

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Published on: August 30, 2012

Evanescent wave coupling in terahertz waveguide arrays.

K S Reichel1, N Sakoda, R Mendis

  • 1Department of Electrical and Computer Engineering, Rice University, MS 378, Houston, TX77251-1892, USA.

Optics Express
|August 14, 2013
PubMed
Summary
This summary is machine-generated.

We investigated energy transfer between parallel-plate waveguides using terahertz waves. Stronger coupling was observed with increased separation and propagation distance, paving the way for new terahertz devices.

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Area of Science:

  • Optics and Photonics
  • Terahertz Science and Technology

Background:

  • Evanescent wave coupling is crucial for energy transfer in closely spaced optical and terahertz structures.
  • Parallel-plate waveguides offer a platform for guiding and manipulating terahertz waves.

Purpose of the Study:

  • To investigate energy transfer mechanisms in arrays of finite-width parallel-plate waveguides.
  • To explore the influence of waveguide separation and propagation distance on evanescent coupling.
  • To establish a foundation for developing novel terahertz components and devices.

Main Methods:

  • Utilized broadband terahertz (THz) waves.
  • Employed an array of identical finite-width parallel-plate waveguides.
  • Analyzed energy transfer via evanescent wave coupling.

Main Results:

  • Observed enhanced energy transfer with increasing plate separation.
  • Demonstrated stronger coupling for longer propagation paths.
  • Quantified the relationship between physical parameters and coupling strength.

Conclusions:

  • Evanescent wave coupling is a viable mechanism for energy transfer in parallel-plate waveguide arrays.
  • The study provides insights into optimizing THz component design.
  • This research lays the groundwork for advanced terahertz integrated devices.