All-VCSEL based digital coherent detection link for multi Gbit/s WDM passive optical networks

Roberto Rodes Lopez, Jesper Bevensee Jensen, Darko Zibar, Christian Neumeyr Roenneberg, Juergen Rosskopf, Markus Ortsiefer, Idelfonso Tafur Monroy

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    Abstract

    We report on experimental demonstration of a digital coherent detection link fully based on vertical cavity surface emitting lasers (VCSELs) for the transmitter as well as for the local oscillator light source at the receiver side. We demonstrate operation at 5 Gbps at a 1550 nm wavelength with record receiver sensitivity of -36 dBm after transmission over 40 km standard single mode fiber. Digital signal processing compensates for frequency offset between the transmitter and the local oscillator VCSELs, and for chromatic dispersion. This system allows for uncooled VCSEL operation and fully passive fiber transmission with no use of optical amplification or optical dispersion compensation. The proposed system demonstrates the potential of multi-gigabit coherent passive optical networks with extended reach and increased capacity. Moreover, this is, to the best of our knowledge, the first demonstration of coherent optical transmission systems using a low-cost VCSEL as the local oscillator as well as for the transmitter.
    Original languageEnglish
    JournalOptics Express
    Volume18
    Issue number24
    Pages (from-to)24969-24974
    ISSN1094-4087
    DOIs
    Publication statusPublished - 2010

    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: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-18-24-24969. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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