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Fully integrated hybrid silicon two dimensional beam scanner.

J C Hulme, J K Doylend, M J R Heck

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    We developed the first hybrid silicon photonic integrated circuit (PIC) for free-space beam steering. This chip integrates 164 optical components, achieving precise beam control over a wide angular range.

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    Area of Science:

    • Photonics
    • Integrated Optics
    • Semiconductor Devices

    Background:

    • Free-space optical communication requires efficient beam-steering technologies.
    • Photonic integrated circuits (PICs) offer miniaturization and high performance for optical systems.

    Purpose of the Study:

    • To present the first fully-integrated free-space beam-steering chip on a hybrid silicon platform.
    • To demonstrate the capabilities of a complex PIC for optical beam manipulation.

    Main Methods:

    • Fabrication of a PIC comprising 164 optical components.
    • Integration of lasers, amplifiers, photodiodes, phase tuners, grating couplers, splitters, and a photonic crystal lens.
    • Characterization of the beam-steering performance.

    Main Results:

    • The chip achieved a steering range of 23° x 3.6°.
    • The beam widths were measured to be 1° x 0.6°.
    • Successful integration of diverse optical functionalities on a single chip.

    Conclusions:

    • The hybrid silicon platform enables the development of advanced, compact beam-steering devices.
    • This work demonstrates a significant advancement in integrated photonics for free-space applications.
    • The demonstrated PIC is a key component for future optical communication and sensing systems.