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Realizing multi-functional all-optical data processing on nanoscale SiC waveguides.

Shih-Chang Syu1, Chih-Hsien Cheng1, Huai-Yung Wang1

  • 1Graduate Institute of Photonics and Optoelectronics, and Department of Electrical Engineering, National Taiwan University (NTU), No. 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan, Republic of China.

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This summary is machine-generated.

Nanoscale silicon carbide (SiC) waveguides achieve all-optical logic operations, including data decoding and switching beyond 12 Gbit/s. This breakthrough enables advanced photonic circuits on a chip.

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Area of Science:

  • Photonics
  • Materials Science
  • Optical Engineering

Background:

  • All-optical logic circuits promise faster and more energy-efficient computing than electronic circuits.
  • Developing compact, high-performance optical components is crucial for on-chip photonic integration.

Purpose of the Study:

  • To demonstrate all-optical logic functions using nanoscale silicon carbide (SiC) waveguides with add-drop micro-ring resonators.
  • To investigate the polarization-selective properties of SiC waveguides for data decoding and switching.

Main Methods:

  • Fabrication of nanoscale SiC waveguides with add-drop micro-ring functionality.
  • Utilizing the nonlinear optical properties of C-C bond enriched SiC thin film.
  • Characterization of polarization-dependent transmission and Kerr switching at data rates exceeding 12 Gbit/s.

Main Results:

  • Achieved TE/TM polarized data decoding with a 9-dB extinction ratio, comparable to fiberized polarizers.
  • Demonstrated dual-port Kerr switching and gating for data format conversion/inversion.
  • Implemented all-optical AND logic gating based on polarization-matched pump and probe signals.

Conclusions:

  • The nanoscale SiC add-drop micro-ring waveguide exhibits multi-functionality for on-chip photonic logic.
  • SiC waveguides offer a promising platform for future high-speed, integrated optical computing systems.