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Related Experiment Video

Updated: Aug 25, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Two-dimensional silicon optical phased array with large field of view.

Xiangyu Guo, Zhen Li, Haihong Chen

    Optics Express
    |October 14, 2022
    PubMed
    Summary

    This study presents a novel 2D optical phased array (OPA) for LiDAR, achieving a large field of view with improved steering ranges. The silicon-on-insulator device offers a simpler, more cost-effective solution for beam steering applications.

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    Area of Science:

    • Photonics and Optical Engineering
    • Integrated Optics
    • LiDAR Technology

    Background:

    • Optical phased arrays (OPAs) are crucial for beam steering in LiDAR systems.
    • Achieving a wide two-dimensional (2D) field of view in OPAs typically requires complex and costly designs.

    Purpose of the Study:

    • To propose and demonstrate a novel 2D OPA with an enhanced large field of view on a silicon-on-insulator platform.
    • To improve lateral and longitudinal beam steering ranges for LiDAR applications.

    Main Methods:

    • Development of a 2D OPA utilizing a silicon-on-insulator platform.
    • Integration of an improved optical antenna and a polarization switch to enhance steering capabilities.
    • Experimental validation of steering ranges for transverse electric (TE) and transverse magnetic (TM) modes.

    Main Results:

    • Demonstrated significant improvements in both lateral and longitudinal steering ranges.
    • Achieved steering ranges of 99.24° × 15.62° for TE mode and 96.48° × 16.08° for TM mode.
    • Validated the effectiveness of the improved optical antenna and polarization switch.

    Conclusions:

    • The proposed 2D OPA design offers a promising approach for integrated LiDAR systems requiring a large field of view.
    • The developed scheme simplifies OPA structure and potentially reduces cost.
    • This work advances the development of high-performance, integrated beam steering components.