All-optical OFDM demultiplexing by spectral magnification and band-pass filtering

Evarist Palushani, Hans Christian Hansen Mulvad, Deming Kong, Pengyu Guan, Michael Galili, Leif Katsuo Oxenløwe

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    We propose a simple OFDM receiver allowing for the use of standard WDM receivers to receive spectrally advanced OFDM signals. We propose to spectrally magnify the optical-OFDM super-channels using a spectral telescope consisting of two time-lenses, which enables reduced inter-carrier-interference in subcarrier detection by simple band-pass filtering. A demonstration on an emulated 100 Gbit/s DPSK optical-OFDM channel shows improved sensitivities after 4-times spectral magnification.
    Original languageEnglish
    JournalOptics Express
    Issue number1
    Pages (from-to)136-144
    Publication statusPublished - 2014

    Bibliographical note

    This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


    • Interference suppression
    • Lenses
    • Optical fiber communication
    • Orthogonal frequency division multiplexing


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