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Optical guided-beam splitter: an experimental study.

D Vincent, J W Lit, P Lavigne

    Applied Optics
    |March 12, 2010
    PubMed
    Summary
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    Researchers measured guided-beam splitter reflectance using a novel fabrication method. The results confirm a theoretical model for reflectance, showing potential for polarization analysis and mode selection in optical devices.

    Area of Science:

    • Optics and Photonics
    • Waveguide Technology

    Background:

    • Guided-beam splitters are crucial optical components.
    • Fabrication methods influence device performance and applications.

    Purpose of the Study:

    • To experimentally measure the reflectance of a guided-beam splitter.
    • To validate a theoretical model for reflectance based on fabrication parameters.

    Main Methods:

    • Fabrication of a planar waveguide with a parabolic thickness profile using a thin wire mask.
    • Experimental measurement of reflectance (R) for the guided-beam splitter.
    • Analysis of results for the transverse magnetic (TM(0)) mode incidence.

    Main Results:

    • The experimental reflectance measurements align well with the theoretical expression R = tanh(2)delta.

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  • The parabolic thickness profile effectively creates a beam-splitting effect.
  • The device shows promise for specific optical applications.

    • Conclusions:

    • The study validates the theoretical model for guided-beam splitter reflectance.
    • The fabrication technique is effective for creating functional optical components.
    • The device has potential applications in polarization analysis and mode selection.