A novel measurement technique to estimate the RF beat-linewidth of free-running heterodyning system using a photonic discriminator

M.R.H. Khan, D.A.I. Marpaung, M. Burla, C.G.H. Roeloffzen

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    3 Citations (Scopus)


    We propose a novel technique to our knowledge to estimate the beat spectrum linewidth of a free-running heterodyning scheme using an optical discriminator. Utilizing a dense wavelength division multiplexing (DWDM) filter as an optical discriminator, the phase modulation (PM) to intensity modulation (IM) conversion is achieved. Thus converted phase noise of the laser into RIN (relative intensity noise). We establish a relationship between the converted RIN and the beat spectrum linewidth. The proposed concept on beat spectrum linewidth estimation is demonstrated and compared with direct beat spectrum measurement. We show that our proposed technique estimates the beat linewidth more accurately for a free-running heterodyning scheme.
    Original languageUndefined
    Title of host publication2011 IEEE International Topical Meeting on Microwave Photonics jointly held with 2011 Asia Pacific Microwave Photonics (MWP2011)
    Place of PublicationUSA
    PublisherIEEE Photonics Society
    Number of pages4
    ISBN (Print)978-1-61284-717-7
    Publication statusPublished - 20 Oct 2011
    Event2011 IEEE International Topical Meeting on Microwave Photonics, MWP 2011 - Singapore, Singapore
    Duration: 18 Oct 201121 Oct 2011

    Publication series

    PublisherIEEE Photonics Society


    Conference2011 IEEE International Topical Meeting on Microwave Photonics, MWP 2011
    Abbreviated titleMWP
    Otherjointly held with 2011 Asia-Pacific Microwave Photonics Conference, APMP 2011


    • IR-78359
    • METIS-279680
    • Frequency discriminator
    • EWI-20750
    • frequency jitter
    • narrow linewidth
    • beat spectrum
    • free-running heterodyning

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