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  • 1.
    Fougstedt, Christoffer
    et al.
    Chalmers University of Technology, Sweden.
    Sheikh, Alireza
    Chalmers University of Technology, Sweden.
    Johannisson, Pontus
    RISE - Research Institutes of Sweden, ICT, Acreo.
    Larsson-Edefors, Per
    Chalmers University of Technology, Sweden.
    Filter Implementation for Power-Efficient Chromatic Dispersion Compensation2018In: IEEE Photonics Journal, ISSN 1097-5764, E-ISSN 1943-0655, Vol. 10, no 4, article id 7202919Article in journal (Refereed)
    Abstract [en]

    Chromatic dispersion (CD) compensation in coherent fiber-optic systems represents a very significant DSP block in terms of power dissipation. Since spectrally efficient coherent systems are expected to find a wider deployment in systems shorter than long haul, it becomes relevant to investigate filter implementation aspects of CD compensation in the context of systems with low-to-moderate amounts of accumulated dispersion. The investigation we perform in this paper has an emphasis on implementation aspects such as power dissipation and area usage, it deals with both time-domain and frequency-domain CD compensations, and it considers both A/D-conversion quantization and fixed-point filter design aspects. To enable an accurate analysis on power dissipation and chip area, the evaluated filters are implemented in a 28-nm fully depleted silicon-on-insulator (FD-SOI) process technology. We show that an optimization of the filter response that takes pulse shaping into account can significantly reduce power dissipation and area usage of time-domain implementations, making them a viable alternative to frequency-domain implementations.

  • 2. Soltanmoradi, R
    et al.
    Wang, Q
    RISE, Swedish ICT, Acreo.
    Qiu, M
    Andersson, J
    RISE, Swedish ICT, Viktoria.
    Transmission of Infrared Radiation Through Metallic Photonic Crystal Structures2013In: IEEE Photonics Journal, ISSN 1097-5764, E-ISSN 1943-0655, Vol. 5, no 5, p. 45000608-Article in journal (Refereed)
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