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Filter Implementation for Power-Efficient Chromatic Dispersion Compensation
Chalmers University of Technology, Sweden.
Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden (2017-2019), ICT, Acreo.ORCID iD: 0000-0003-1793-4451
Chalmers University of Technology, Sweden.
2018 (English)In: IEEE Photonics Journal, E-ISSN 1943-0655, Vol. 10, no 4, article id 7202919Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
2018. Vol. 10, no 4, article id 7202919
Keywords [en]
digital signal processing chips, frequency-domain analysis, optical fibre communication, silicon-on-insulator, time-domain analysis, DSP block, frequency-domain implementations, time-domain implementations, filter response, fixed-point filter design aspects, frequency-domain CD compensations, low-to-moderate amounts, CD compensation, spectrally efficient coherent systems, power dissipation, coherent fiber-optic systems, power-efficient chromatic dispersion compensation, filter implementation, Finite impulse response filters, Optimization, Design methodology, Chromatic dispersion, Throughput, Optical fiber communication, digital signal processing, application specific integrated circuits
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-34351DOI: 10.1109/JPHOT.2018.2846799Scopus ID: 2-s2.0-85048524365OAI: oai:DiVA.org:ri-34351DiVA, id: diva2:1236929
Available from: 2018-08-06 Created: 2018-08-06 Last updated: 2022-09-28Bibliographically approved

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