The feasibility of an optical injection phase lock loop technique for use in a coherent laser communications link between a LEO (Low Earth Orbit Satellite) and a OGS (Optical Ground Station) is studied. The Doppler frequency shift in the LEO-OGS coherent link is estimated and the impact on the link performance is investigated. It is demonstrated experimentally that a 10 Gbps BPSK link can successfully maintain stable frequency and phase locking status under the condition that the signal laser frequency changes over 9 GHz at a frequency deviation rate up to 1 Hz, which is ample to meet the requirement for the LEO-OGS coherent link.


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    Title :

    Feasibility study of coherent LEO-ground link system using an optical injection phase lock loop technique


    Contributors:
    Shoji, Y (author) / Takayama, Y (author) / Toyoshima, M (author) / Fice, M J (author) / Seeds, A J (author)


    Publication date :

    2011-05-01


    Size :

    472751 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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