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Related Experiment Video

Updated: Jun 15, 2026

Fabrication and Characterization of Disordered Polymer Optical Fibers for Transverse Anderson Localization of Light
09:19

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Published on: July 29, 2013

Ray trajectories in optical fiber tapered sections.

B K Garside, T K Lim, J P Marton

    Applied Optics
    |March 6, 2010
    PubMed
    Summary

    Geometrical optics analysis of slab waveguide tapers with finite cladding thickness shows good agreement with exact modal analysis. Ray tracing techniques are validated for designing taper couplers.

    Area of Science:

    • Optics and Photonics
    • Waveguide Theory
    • Computational Electromagnetics

    Background:

    • Slab waveguides are fundamental components in integrated optics.
    • Analysis of waveguide tapers is crucial for efficient optical signal manipulation.
    • Finite cladding thickness can significantly impact waveguide behavior.

    Purpose of the Study:

    • To analyze slab waveguide tapers with finite cladding thickness using geometrical optics.
    • To compare geometrical optics results with exact modal analysis.
    • To validate ray tracing techniques for taper coupler design.

    Main Methods:

    • Geometrical optics (GO) approach applied to slab waveguide tapers.
    • Derivation of iteration formulas for propagation angles and thickness changes.

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  • Comparison of GO results with exact modal analysis and successive step modal analysis.

    • Main Results:

    • Good agreement observed between geometrical optics and exact modal analysis.
    • Iteration formulas accurately predict propagation angles and thickness variations.
    • Numerical results confirm the validity of the GO approach for tapers.

    Conclusions:

    • Geometrical optics provides a useful and accurate method for analyzing slab waveguide tapers.
    • Ray tracing techniques are suitable for the analysis and design of taper couplers.
    • The study validates a simplified approach for complex waveguide structures.