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Related Experiment Video

Updated: Jul 25, 2025

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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Multimode optical phased array for parallel beam steering - feasibility study.

Md Torikul Islam Badal, James Scott, Ke Wang

    Optics Express
    |June 29, 2023
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces multimode Optical Phased Arrays (OPAs) for efficient beam steering. Multimode OPAs reduce device size, power consumption, and steering requirements by generating multiple beams from a single silicon integrated OPA.

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    Area of Science:

    • Photonics and Optical Engineering
    • Integrated Optics
    • Semiconductor Devices

    Background:

    • Silicon integrated Optical Phased Arrays (OPAs) are crucial for beam steering due to CMOS compatibility and precise optical control.
    • Current single-mode OPAs face limitations in device size, complexity, and power consumption when generating multiple beams for parallel steering.
    • Existing OPA technology relies on fundamental mode tuning for beam generation, limiting parallel steering capabilities.

    Purpose of the Study:

    • To propose and demonstrate a novel multimode Optical Phased Array (OPA) design for generating multiple beams from a single integrated device.
    • To overcome the limitations of single-mode OPAs in terms of size, complexity, and power consumption for parallel beam steering.
    • To investigate the feasibility of multimode operation for enhanced beam steering performance in silicon photonics.

    Main Methods:

    • Design and simulation of a multimode OPA architecture.
    • Experimental demonstration of parallel beam steering using multimode operation.
    • Analysis of key individual components and their contribution to multimode functionality.

    Main Results:

    • The proposed multimode OPA design enables parallel beam steering, reducing the number of required steering elements by nearly 50%.
    • Device size is minimized by over 30% with the simplest two-mode operation.
    • Increased number of modes further enhances improvements in steering, power consumption, and device size.

    Conclusions:

    • Multimode OPAs offer a significant advancement over single-mode designs for silicon integrated beam steering.
    • This technology provides a pathway to more compact, power-efficient, and versatile optical beam steering systems.
    • The multimode OPA principle is scalable, with greater benefits achievable using a larger number of operating modes.