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Fully switchable multiwavelength fiber laser assisted by a random mirror.

V DeMiguel-Soto, M Bravo, M Lopez-Amo

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    This study demonstrates a novel multiwavelength laser capable of real-time switching and reconfiguration. It can generate up to 18 distinct wavelengths on demand, meeting International Telecommunications Union grid specifications.

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    Area of Science:

    • Photonics
    • Optical Engineering
    • Laser Technology

    Background:

    • Wavelength-agile lasers are crucial for advanced optical communication systems.
    • Existing reconfigurable laser technologies often lack real-time switching capabilities or flexibility in wavelength selection.

    Purpose of the Study:

    • To experimentally demonstrate a novel multiwavelength laser with real-time switchable and reconfigurable capabilities.
    • To achieve flexible generation of multiple wavelengths within International Telecommunications Union (ITU) grid specifications.

    Main Methods:

    • Utilized a laser cavity incorporating a random distributed mirror.
    • Implemented a novel real-time reconfigurable filter mirror structure.
    • Employed simultaneous Erbium-doped fiber and Raman amplification for broad C-band operation.

    Main Results:

    • Successfully generated any combination of wavelengths on the 50 and 100 GHz ITU grids.
    • Demonstrated the capability to produce up to 18 distinct lasing wavelengths within a 15 nm window in the C-band.
    • Achieved automatic and real-time switching of generated wavelengths.

    Conclusions:

    • The developed laser architecture offers a versatile platform for dynamic multiwavelength generation.
    • This technology enables flexible and on-demand wavelength selection for optical networks.
    • The real-time reconfigurable filter mirror is key to the laser's agile performance.