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Performance criteria and limitations of electrooptic waveguide array deflectors.

C H Bulmer, W K Burns, T G Giallorenzi

    Applied Optics
    |March 11, 2010
    PubMed
    Summary

    This study uses Fraunhofer diffraction theory to analyze electrooptic waveguide deflectors, detailing their performance metrics like resolvable spots and crosstalk for improved optical beam steering. Comparisons with experimental data validate the findings.

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    Area of Science:

    • Optics and Photonics
    • Electrical Engineering

    Background:

    • Electrooptic waveguide deflectors are crucial for optical beam steering.
    • Understanding their far-field output is essential for device design and performance evaluation.

    Purpose of the Study:

    • To apply Fraunhofer diffraction theory to analyze various electrooptic waveguide deflector configurations.
    • To assess and compare the capabilities of different deflector designs.

    Main Methods:

    • Utilized Fraunhofer diffraction theory to model far-field intensity distributions.
    • Analyzed single prism, arrayed prism (identical and phase-staggered), and channel waveguide elements.
    • Determined electrode capacitances and assessed parameters like resolvable spots, power, bandwidth, and crosstalk.

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    Main Results:

    • Developed a unified analytic technique applicable to diverse deflector structures.
    • Demonstrated that optical beam deflection can be either continuous or discontinuous.
    • Established the utility of simple phase distributions for predicting key deflection parameters, including power per unit bandwidth.

    Conclusions:

    • Fraunhofer diffraction theory provides a robust framework for analyzing electrooptic waveguide deflectors.
    • The study offers a comparative assessment of deflector capabilities, aiding in the selection of optimal designs.
    • Validated analytical models with experimental data, confirming their predictive power.