Fabrication of multi-core structures with bulk refractive index modification in optical fibers was first demonstrated by the scanning of plasma self-channeling using a femtosecond (110 fs) laser (/spl lambda//sub p/ = 790 nm). Plasma self-channeling is an intensity-dependent nonlinear phenomenon, in which a laser beam is tightly focused and guided for the distance longer than the Rayleigh range. It is attributed to self-focusing due to the intensity-dependent refractive index change and to self-defocusing by the laser-induced plasma. The fabrication method of the multi-core structure in optical fibers can be a useful tool for a variety of applications such as photonic crystal fibers and micro-waveguides in the fields of optical communication and optical sensors.


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    Titel :

    Fabrication of multi-core structures in optical fibers using plasma self-channeling excited by a femtosecond laser


    Beteiligte:
    Sung-Hak Cho, (Autor:in) / Kumagai, H. (Autor:in) / Midorikawa, K. (Autor:in)


    Erscheinungsdatum :

    01.01.2001


    Format / Umfang :

    139943 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Fabrication of Multi-Core Structures in Optical Fibers Using Plasma Self-Channeling Excited by a Femtosecond Laser

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    IEEE; Lasers and Electro-Optics Society | British Library Conference Proceedings | 1998



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