Bent waveguides are superimposed on homogeneous distributed feedback (DFB) grating fields to generate chirped DFB gratings. This efficient and high-resolution method enables the fabrication of arbitrarily axially chirped DFB gratings by appropriately bent waveguides which reveal differences between neighboring effective DFB pitches in the sub-interatomic range. The bending functions are generated by high-resolution lithography on a set of masks which can be frequently reused for a low-cost production process. The design principles are described defining specific unit cells which are reproduced as often as necessary to obtain a full coverage of the wafer. The method is demonstrated for semiconductor lasers including DFB gratings.


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    Titel :

    Chirped DFB gratings using bent waveguides to tailor specific laser properties


    Beteiligte:

    Kongress:

    Fifth International Conference on Industrial Lasers and Laser Applications '95 ; 1995 ; Shatura,Moscow,Russia


    Erschienen in:

    Erscheinungsdatum :

    1996-03-01





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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