We have developed a dual wavelength DFB laser for the generation of a widely tunable microwave signal. In order to obtain a narrow linewidth of the generated signal, we have focused the development of the source on the reduction of the linewidth of each generated wavelengths. The best results were obtained with a device using 2500 μm long DFB sections that generated linewidths narrower than 300 kHz. Beating the two wavelengths from this chip on a photodetector resulted in a beat note having a linewidth of 600 kHz. This microwave signal could be tuned from 3 to 20 GHz with a linewidth kept below 1 MHz.


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    Title :

    Monolithic dual wavelength DFB lasers for narrow linewidth heterodyne beat-note generation


    Contributors:
    van Dijk, F. (author) / Accard, A. (author) / Enard, A. (author) / Drisse, O. (author) / Make, D. (author) / Lelarge, F. (author)


    Publication date :

    2011-10-01


    Size :

    1148342 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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