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Related Experiment Video

Updated: Jun 15, 2026

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Optical strip waveguide: an experiment.

K Ogusu, I Tanaka

    Applied Optics
    |March 18, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Researchers measured transmission loss in rib waveguides at millimeter wavelengths. Leakage loss from mode coupling exceeded dielectric loss, and experimental results differed from prior theoretical predictions.

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    Area of Science:

    • Optoelectronics and Photonics
    • Waveguide Technology
    • Millimeter-wave Engineering

    Background:

    • Rib waveguides are crucial components in integrated optical circuits.
    • Understanding transmission loss is vital for device performance optimization.
    • Millimeter-wavelength applications require precise waveguide design.

    Purpose of the Study:

    • To experimentally investigate transmission loss in fabricated rib waveguides.
    • To analyze the contributions of leakage and dielectric loss to total transmission loss.
    • To compare experimental findings with existing theoretical models.

    Main Methods:

    • Fabrication of rib waveguides.
    • Measurement of transmission loss as a function of rib width.

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  • Experimental verification of leaky modes and their cancellation effects.
  • Comparison of experimental data with theoretical predictions.

    • Main Results:

    • Transmission loss was measured in the millimeter-wavelength region.
    • Leakage loss, caused by TE-TM mode coupling, was found to be greater than dielectric loss.
    • Experimental verification of leaky modes and their cancellation effects was achieved.
    • Theoretical analysis was found to underestimate the leakage loss.

    Conclusions:

    • Experimental measurements confirm the significant impact of leakage loss in rib waveguides.
    • Existing theoretical models may require refinement to accurately predict leakage loss.
    • The findings provide valuable insights for the design and fabrication of efficient millimeter-wavelength devices.