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Toward multi-Gbps indoor optical wireless multicasting system employing passive diffractive optics.

C W Oh, F M Huijskens, Z Cao

    Optics Letters
    |May 3, 2014
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    This study demonstrates a new optical free-space multicasting system for high-speed indoor wireless communication. The system achieves error-free transmission at 2.5 Gbps, offering a scalable solution for in-building networks.

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    Area of Science:

    • Optical Engineering
    • Wireless Communication
    • Photonics

    Background:

    • Indoor wireless communication faces limitations in bandwidth and scalability.
    • Optical wireless communication offers a potential solution for high-speed data transmission.
    • Existing systems may lack efficient multicasting capabilities for multiple users.

    Purpose of the Study:

    • To evaluate and demonstrate a novel optical free-space multicasting system.
    • To achieve multi-Gigabits-per-second (multi-Gbps) indoor transmission.
    • To assess the system's scalability and integration potential.

    Main Methods:

    • Development of a free-space optical multicasting system using infrared beams.
    • Implementation of beam steering via a passive diffraction grating for simultaneous line-of-sight links.
    • Experimental validation of transmission performance using on-off keying modulation.

    Main Results:

    • Demonstration of error-free optical links with a bit error rate below 10(-9) at 2.5 Gbps.
    • Successful multicasting capability enabling simultaneous transmissions.
    • System scalability confirmed for supporting higher data rates.

    Conclusions:

    • The demonstrated optical free-space multicasting system is effective for high-speed indoor communication.
    • The system offers a scalable and reliable solution for short-range optical wireless communication.
    • Seamless integration with existing in-building fiber networks is feasible.