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Related Experiment Video

Updated: Jul 15, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

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Ultra-Compact and Broadband Nano-Integration Optical Phased Array.

Zhicheng Wang1,2, Junbo Feng3, Haitang Li4

  • 1College of Artificial Intelligence, Southwest University, Chongqing 400715, China.

Nanomaterials (Basel, Switzerland)
|September 28, 2023
PubMed
Summary
This summary is machine-generated.

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Researchers developed a compact optical phased array (OPA) beam-splitting scheme using nano-inverse design. This innovation significantly reduces OPA size, enabling large-scale on-chip integration.

Area of Science:

  • Photonics
  • Nanotechnology
  • Integrated Optics

Background:

  • Large-scale optical phased arrays (OPAs) are crucial for advanced optical systems.
  • Current integrated OPAs are limited by the large lateral dimensions of beam-splitting structures.

Purpose of the Study:

  • To propose an ultra-compact and broadband OPA beam-splitting scheme.
  • To overcome the limitations of existing beam-splitting structures for on-chip integration.

Main Methods:

  • Utilized a nano-inverse design approach.
  • Employed a staged design for T-branch optimization.
  • Conducted three-dimensional finite-difference time-domain (3D FDTD) simulations.

Main Results:

  • Achieved a T-branch with 500 nm bandwidth (1300-1800 nm) and -0.2 dB insertion loss.
Keywords:
inverse designoptical phased arrayoptical power splitter

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Last Updated: Jul 15, 2025

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  • Demonstrated a 1x16 OPA beam-splitter with a lateral dimension of only 27.3 μm.
  • Simulated a wide diffraction angle range (0.6°-41.6°) within 1370-1600 nm.

    • Conclusions:

    • The proposed cascaded T-branch configuration offers high scalability and width preservation.
    • This scheme significantly reduces OPA lateral dimensions, enabling large-scale on-chip integration.
    • The developed OPA beam-splitter is a promising solution for future integrated photonic systems.