Filter Implementation for Power-Efficient Chromatic Dispersion Compensation
Artikel i vetenskaplig tidskrift, 2018

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.

chromatic dispersion

Optical fiber communication

digital signal processing

application specific integrated circuits

Författare

Christoffer Fougstedt

Chalmers, Data- och informationsteknik, Datorteknik

Alireza Sheikh

Chalmers, Elektroteknik, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Pontus Johannisson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Per Larsson-Edefors

Electronics Systems

IEEE Photonics Journal

1943-0655 (ISSN) 1943-0647 (eISSN)

Vol. 10 4 7202919

Energieffektiv optisk fiberkommunikation

Knut och Alice Wallenbergs Stiftelse, 2014-07-01 -- 2019-06-30.

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Atom- och molekylfysik och optik

Kommunikationssystem

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.1109/JPHOT.2018.2846799

Mer information

Senast uppdaterat

2018-08-30