Digital filters for coherent optical receivers. Savory, S. J. Optics Express, 16(2):804–817, January, 2008. ![Digital filters for coherent optical receivers [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Digital filters underpin the performance of coherent optical receivers which exploit digital signal processing (DSP) to mitigate transmission impairments. We outline the principles of such receivers and review our experimental investigations into compensation of polarization mode dispersion. We then consider the details of the digital filtering employed and present an analytical solution to the design of a chromatic dispersion compensating filter. Using the analytical solution an upper bound on the number of taps required to compensate chromatic dispersion is obtained, with simulation revealing an improved bound of 2.2 taps per 1000ps/nm for 10.7GBaud data. Finally the principles of digital polarization tracking are outlined and through simulation, it is demonstrated that 100krad/s polarization rotations could be tracked using DSP with a clock frequency of less than 500MHz.
@article{savory_digital_2008,
title = {Digital filters for coherent optical receivers},
volume = {16},
copyright = {\&\#169; 2008 Optical Society of America},
issn = {1094-4087},
url = {https://www.osapublishing.org/oe/abstract.cfm?uri=oe-16-2-804},
doi = {10.1364/OE.16.000804},
abstract = {Digital filters underpin the performance of coherent optical receivers which exploit digital signal processing (DSP) to mitigate transmission impairments. We outline the principles of such receivers and review our experimental investigations into compensation of polarization mode dispersion. We then consider the details of the digital filtering employed and present an analytical solution to the design of a chromatic dispersion compensating filter. Using the analytical solution an upper bound on the number of taps required to compensate chromatic dispersion is obtained, with simulation revealing an improved bound of 2.2 taps per 1000ps/nm for 10.7GBaud data. Finally the principles of digital polarization tracking are outlined and through simulation, it is demonstrated that 100krad/s polarization rotations could be tracked using DSP with a clock frequency of less than 500MHz.},
language = {EN},
number = {2},
urldate = {2019-01-24},
journal = {Optics Express},
author = {Savory, Seb J.},
month = jan,
year = {2008},
keywords = {Quadrature amplitude modulation, Polarization dependent loss, Self phase modulation, Digital filtering, Nonlinear filtering, Nonlinear impairments},
pages = {804--817},
file = {Full Text PDF:D\:\\Zotero\\storage\\LUXP3ZER\\Savory - 2008 - Digital filters for coherent optical receivers.pdf:application/pdf;Snapshot:D\:\\Zotero\\storage\\JPA7GZRQ\\abstract.html:text/html}
}
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