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Linearized Bragg grating assisted electro-optic modulator.

Jacob B Khurgin, Paul A Morton

    Optics Letters
    |December 16, 2014
    PubMed
    Summary
    This summary is machine-generated.

    We introduce a new grating-assisted Michelson (GAMI) modulator that improves linearity in microwave photonics links. This device uses a Bragg grating in a Michelson Interferometer to achieve electro-optic modulation.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Applied Physics

    Background:

    • Microwave photonics links are crucial for high-frequency signal transmission.
    • Linearity is a key performance metric for electro-optic modulators, directly impacting signal fidelity.
    • Existing modulators often suffer from nonlinearities, limiting their application range.

    Purpose of the Study:

    • To propose and analyze a novel linearized electro-optic modulator design.
    • To demonstrate the effectiveness of Bragg grating index modulation for linearization.
    • To present a modulator capable of both intensity and amplitude modulation.

    Main Methods:

    • Utilizing a Michelson Interferometer configuration.
    • Incorporating a Bragg grating reflector whose refractive index is modulated.
    • Analyzing the modulator's performance for microwave photonics applications.

    Main Results:

    • The proposed grating-assisted Michelson (GAMI) modulator achieves significant linearization.
    • The device can be configured as either an intensity or amplitude modulator.
    • Demonstrated improvement in the linearity of microwave photonics links.

    Conclusions:

    • The GAMI modulator offers a promising solution for enhancing linearity in electro-optic systems.
    • This approach provides a versatile platform for advanced photonic applications.
    • The findings pave the way for more robust and high-performance microwave photonics links.