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Related Experiment Video

Updated: Jun 5, 2025

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Topology-optimized silicon-based dual-mode 4 × 4 electro-optic switch.

Jiaqi Niu1,2, Shanglin Yang1,2, Ting Zhou1

  • 1State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China.

Nanophotonics (Berlin, Germany)
|December 5, 2024
PubMed
Summary
This summary is machine-generated.

This study presents a high-speed silicon optical switch using mode division multiplexing for faster on-chip optical interconnects. The novel design achieves microsecond switching times, improving data transmission capabilities.

Keywords:
electro-optical switchmultimode optical switchon-chip optical interconnect systemssilicon photonics

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Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics
  • Materials Science

Background:

  • Silicon-based optical switches are crucial for on-chip optical interconnects.
  • Current multimode optical switches have microsecond switching times, limiting applications.
  • Mode division multiplexing (MDM) enhances channel capacity.

Purpose of the Study:

  • To design and demonstrate a high-speed dual-mode 4x4 optical switch.
  • To achieve faster switching times than existing microsecond-range devices.
  • To improve performance metrics like power consumption and insertion loss.

Main Methods:

  • Utilized a mode-diversity scheme with mode multiplexers/de-multiplexers.
  • Employed two optimized single-mode 4x4 optical switches.
  • Leveraged the carrier dispersion effect for fast switching.
  • Optimized the Spanke-Beneš architecture to reduce switch units.

Main Results:

  • Demonstrated a high-speed dual-mode 4x4 optical switch.
  • Achieved fast switching enabled by carrier dispersion.
  • Reduced power consumption by approximately 17%.
  • Insertion losses within 8.8 dB across 1525-1565 nm.
  • Optical signal-to-noise ratios exceeded 12.8 dB.
  • Verified functionality with 50 Gbps data transmission experiments.

Conclusions:

  • The developed silicon optical switch offers high-speed performance suitable for advanced optical interconnects.
  • The design successfully integrates MDM and carrier dispersion for enhanced switching speed and efficiency.
  • The device exhibits competitive performance in terms of insertion loss, OSNR, and power consumption.