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Offset prism for optical waveguide coupling.

F Ulrich, D Chen

    Applied Optics
    |February 6, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Scanning optical modes in thin film waveguides is simplified by offsetting prisms. This eliminates manual repositioning, enabling efficient mode scanning by adjusting the prism

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • High refractive index prisms are crucial for coupling optical beams into thin film waveguides.
    • Conventional methods require manual prism-waveguide repositioning to scan propagating modes.

    Purpose of the Study:

    • To eliminate the need for prism repositioning during mode scanning in thin film waveguides.
    • To develop a method for optimizing prism offset to facilitate mode scanning.

    Main Methods:

    • Theoretical analysis of prism-waveguide coupling dynamics.
    • Development of a computer program to calculate optimal prism offset.
    • Focus on minimizing deviation within specified prism rotational angles.

    Main Results:

    • A method to eliminate prism repositioning during mode scanning was identified.

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  • The prism offset is calculated based on minimum deviation principles.
  • The study provides a computational tool for determining the optimal offset.

    • Conclusions:

    • Properly offsetting the prism relative to its rotational axis simplifies optical mode scanning.
    • This technique enhances efficiency and reduces complexity in thin film waveguide characterization.
    • The developed analysis and program offer a practical solution for optical coupling challenges.