An ultra-stable microwave transfer technique for the ACES and future space missions

Naomi Altman, Sascha Schediwy, John McFerran, Michael Tobar, Andre Luiten

    Research output: Chapter in Book/Conference paperConference paperpeer-review

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    We present an actuation technique for suppressing uncorrelated noise
    between two optical frequencies to obtain ultra-stable microwave frequency
    dissemination over optical fibre. This technique will enable dual optical and
    microwave frequency transfer between the University of Western Australia and
    Yarragadee Satellite Laser Ranging station, which has application for the Atomic
    Clock Ensemble in Space (ACES) mission and other precision navigation and timing
    technologies. We build on the technique presented in [1], which demonstrates
    microwave transfer stability of 10−14 at 1s integration time by stabilising the group
    delay of an two correlated optical signals. A second actuator has been developed to
    suppress the remaining uncorrelated phase fluctuations between two optical
    frequencies by implementing optical-wavelength-scale action to vary the microwave
    phase. The actuator has been designed with the aid of a simulation that predicts
    actuation bandwidth and loss for a range of actuator parameters.
    Original languageEnglish
    Title of host publicationProceedings of the 13th Australian Space Science Conference
    EditorsWayne Short, Iver Cairns
    Place of PublicationSydney
    PublisherNational Space Society of Australia Ltd.
    ISBN (Print)978-0-9775740-7-0
    Publication statusPublished - May 2014
    Event13th Australian Space Science Conference - Sydney, Australia
    Duration: 30 Sept 20132 Oct 2013


    Conference13th Australian Space Science Conference


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