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In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
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Supercontinuum generation in dispersion-managed tapered-rib waveguide.

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    We designed a tapered-rib waveguide to generate supercontinuum. This novel waveguide design broadens the output spectrum significantly, offering new possibilities for optical applications.

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    Area of Science:

    • Photonics and Optics
    • Materials Science

    Background:

    • Supercontinuum generation is crucial for various optical applications.
    • Waveguide dispersion management is key to controlling spectral broadening.

    Purpose of the Study:

    • To design and numerically investigate a tapered-rib waveguide for efficient supercontinuum generation.
    • To explore the impact of varying etched depth on dispersion management.

    Main Methods:

    • Numerical simulations of a 3 cm long Air-SF57 glass-SiO(2) tapered-rib waveguide.
    • Utilizing input pulses at 1.55 μm wavelength, 150 fs width, and 5 kW peak power.

    Main Results:

    • Achieved significant spectral broadening of the output, extending from approximately 1 μm to 6 μm.
    • Demonstrated continuous modification of phase-matching conditions through waveguide geometry.

    Conclusions:

    • The tapered-rib waveguide design effectively generates broadband supercontinuum.
    • Variable etched depth is a viable method for dispersion management in such waveguides.