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Steerable optical antennas by selective heating.

Alexander Cuadrado, Francisco Javier González, Javier Alda

    Optics Letters
    |April 2, 2014
    PubMed
    Summary

    Selective heating of optical antenna elements allows directional control by altering electrical conductivity and current phase. This method enables fast reconfiguration of antenna arrays, as demonstrated by numerical evaluations.

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    Area of Science:

    • Optoelectronics
    • Antenna Engineering
    • Materials Science

    Background:

    • Directional control in optical antenna arrays is crucial for various applications.
    • Existing methods for beam steering can be complex or slow.

    Purpose of the Study:

    • To investigate a novel method for achieving directional steerability in optical antenna arrays.
    • To demonstrate the feasibility of using selective heating for fast reconfiguration.

    Main Methods:

    • Selective heating of individual optical antenna elements.
    • Modulating the biasing point of antenna elements to control temperature.
    • Analyzing the effect of temperature on electrical conductivity and current phase.
    • Numerical evaluation of antenna array performance with 2 and 3 elements.

    Main Results:

    • Selective heating successfully alters the electrical conductivity and phase of antenna elements.
    • Temperature variations achieved through biasing allow for controlled changes in antenna performance.
    • Numerical simulations confirm the feasibility of directional steerability using this heating method.

    Conclusions:

    • Selective heating offers a viable approach for directional control and fast reconfiguration of optical antenna arrays.
    • The proposed method is numerically validated for small-scale antenna arrays.

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