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Nanophotonics-inspired all-silicon waveguide platforms for terahertz integrated systems.
Ratmalgre A S D Koala1, Masayuki Fujita1, Tadao Nagatsuma1
1Information Photonics Group, Div. Adv. Electronics & Optical Science, D348 Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, 560-0043 Osaka, Japan.
Nanophotonics (Berlin, Germany)
|December 5, 2024
Summary
Silicon microphotonics have advanced terahertz (THz) systems using dielectric waveguides. All-silicon waveguides enable efficient, compact THz integrated circuits, evolving systems from discrete components to integrated solutions.
Area of Science:
- Photonics
- Terahertz (THz) technology
- Materials science
Background:
- Metal-based waveguides present challenges in efficiency, size, and cost for THz systems.
- Dielectric waveguides, particularly silicon-based ones, are emerging as a superior alternative.
- THz systems are transitioning from discrete components to integrated circuits.
Purpose of the Study:
- To review the evolution of terahertz integrated circuits and systems.
- To highlight the role of all-silicon waveguides in this transition.
- To assess the impact of silicon microphotonics on THz technology.
Main Methods:
- Literature review of recent advances in silicon microphotonics and THz waveguides.
- Analysis of the benefits of dielectric waveguides over metal-based ones.
- Examination of the development stages of THz integrated circuits.
Main Results:
- Silicon (Si) microphotonics have enabled novel dielectric waveguides for the THz range.
- All-Si waveguides offer low-loss, low dispersion, and single-mode operation.
- These waveguides facilitate the integration of THz systems into compact circuits.
Conclusions:
- All-Si waveguides are key enablers for efficient THz integrated circuits.
- They are crucial for realizing large-scale integration in the THz spectrum.
- The evolution towards THz integrated circuits is driven by advances in all-Si waveguides.
