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Slot-electrode optical modulator using KTiOPO(4).

A A Godil, H Kikuchi, T Fukui

    Applied Optics
    |November 6, 2010
    PubMed
    Summary
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    A novel slot-electrode optical modulator using KTP material was demonstrated. This device shows potential for high-power, fast switching applications with further voltage reduction possible.

    Area of Science:

    • Photonics and Optical Engineering
    • Materials Science

    Background:

    • Optical modulators are crucial components in photonic systems.
    • Existing modulators face limitations in speed, power handling, or voltage requirements.

    Purpose of the Study:

    • To introduce and demonstrate a novel slot-electrode optical modulator.
    • To evaluate the performance of this modulator using KTP material at 532 nm.

    Main Methods:

    • Fabrication of a slot-electrode optical modulator.
    • Characterization of switching voltage, risetime, and power capability.
    • Investigation of DC modulation without applied DC voltage.

    Main Results:

    • Demonstrated a slot-electrode optical modulator with KTP at 532 nm.

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  • Achieved a switching voltage of 45 V and a risetime of 3.5 ns.
  • Measured a power capability exceeding 7 W, with potential for 18 V switching voltage.

    • Conclusions:

    • The slot-electrode design offers a promising platform for high-performance optical modulation.
    • The demonstrated device exhibits excellent power handling and fast switching speeds.
    • Further optimization can significantly lower the operational voltage, enhancing practical applicability.