The lasers used in coherent transmission systems need to produce output that has a narrow spectral linewidth, and this means that their rebroadening and linewidth floor have to be reduced. Spatial. hole burning has been suggested to cause rebroadening and to elevate the linewidth floor [1,2], and we have previously reported that a 56-kHz linewidth can be achieved by using a corrugation-pitch modulated structure to suppress spatial hole burning [3].


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    Title :

    Spectral linewidth characteristics of /spl lambda//4-Shifted MQW-DFB Lasers as a Function of Coupling Coefficient


    Contributors:
    Okai, M. (author) / Tsuchiya, T. (author) / Takai, A. (author)


    Publication date :

    1992-01-01


    Size :

    117450 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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