A permanent change in the refractive index affected by femtosecond laser pulses at a small depth (2–15 μm) under the surface of a lithium niobate crystal has been studied. Based on the technology of femtosecond writing, solutions for the problems of industrial electro-optical modulators are proposed. For interference schemes obtained by lithographic methods, a correction track with a reduced refractive index (Δn = –3 ∙ 10–3) was writing to reduce the coupling between the channels of the splitter and to increase its temperature stability. Apart from the above, a possibility of a fully femtosecond writing of a depressed cladding waveguide with a core diameter of 12 μm at small depths below the surface of a lithium niobate crystal has been demonstrated to create a noninterference electro-optical modulator based on the effect of electrooptic rotation of polarization.


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    Titel :

    TECHNOLOGY OF THREE-DIMENSIONAL FEMTOSECOND WRITING FOR CREATING INTEGRATED OPTICS ELEMENTS


    Beteiligte:
    N. N. Skryabin (Autor:in) / M. A. Bukharin (Autor:in) / S. M. Kostritskii (Autor:in) / Yu. N. Korkishko (Autor:in) / V. A. Fedorov (Autor:in) / D. V. Khudyakov (Autor:in)


    Erscheinungsdatum :

    2018




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




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