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Slot waveguide-based splitters for broadband terahertz radiation.

Shashank Pandey1, Gagan Kumar, Ajay Nahata

  • 1Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, Utah 84112, USA.

Optics Express
|December 18, 2010
PubMed
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We developed a T-shaped slot waveguide splitter for broadband terahertz (THz) radiation. This device efficiently splits THz waves, enabling compact THz device design.

Area of Science:

  • Optics and Photonics
  • Terahertz (THz) Technology
  • Waveguide Engineering

Background:

  • Terahertz (THz) radiation applications are expanding, requiring efficient manipulation and splitting of THz waves.
  • Integrated photonic devices, particularly slot waveguides, offer promising solutions for compact THz systems.

Purpose of the Study:

  • To demonstrate a novel slot waveguide-based splitter for broadband terahertz (THz) radiation.
  • To investigate the performance of a T-shaped waveguide structure for THz wave splitting.
  • To establish a predictive model for optimizing the splitter's design.

Main Methods:

  • Fabrication and experimental measurement of a T-shaped slot waveguide splitter.
  • Numerical simulations of THz transmission and reflection characteristics.

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  • Development and validation of a transmission line model to describe device behavior.

    • Main Results:

    • The T-shaped slot waveguide effectively splits broadband THz radiation.
    • Experimental and simulation results showed strong agreement with the transmission line model.
    • Optimal waveguide parameters were inferred based on the validated model.

    Conclusions:

    • The developed slot waveguide splitter is a viable component for THz systems.
    • The transmission line model provides an effective tool for designing and optimizing THz splitters.
    • This work opens new avenues for compact and efficient THz device integration.