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In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
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Published on: May 27, 2013

Understanding power leakage in tapered solid core microstructured fibers.

S Laflamme, S Lacroix, J Bures

    Optics Express
    |June 18, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Fundamental core-mode leakage in tapered photonic crystal fiber is caused by modal coupling to ring modes. Experimental data validate a model explaining transmission features.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Photonic crystal fibers (PCFs) offer unique light-guiding properties.
    • Understanding mode leakage is crucial for PCF device design.

    Purpose of the Study:

    • To investigate the fundamental cause of core-mode leakage in tapered PCFs.
    • To analyze modal coupling mechanisms responsible for signal loss.

    Main Methods:

    • Theoretical modeling of modal coupling.
    • Experimental transmission measurements in tapered PCFs.
    • Comparison of experimental data with theoretical predictions.

    Main Results:

    • Identified modal coupling from the core-mode to ring modes as the primary cause of leakage.
    • Observed strong correlation between experimental transmission spectra and model predictions.
    • The proposed model successfully explains key transmission features.

    Conclusions:

    • Modal coupling to ring modes is the dominant mechanism for fundamental core-mode leakage in tapered PCFs.
    • The developed model provides a reliable framework for predicting and understanding leakage.
    • This research aids in optimizing PCF designs for specific applications.