H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 10/18 (2006.01)
Patent
CA 2461889
Methods and apparatus for correcting polarization mode dispersion (PMD) and other transmission distortions in a light signal. By performing measurements of polarization state versus frequency on an intrachannel basis, the first- order and higher-order variations in the polarization state in the channel due to distortions such as PMD may be identified and characterized. Having identified and characterized the variations, the effects of the distortion may be compensated for and substantially eliminated. The methods and apparatus are not limited to single channel configurations but, instead, embrace configuration such as DWDM that carry a plurality of communication channels over a single fiber link.
L'invention concerne des procédés et un appareil connexe utilisés pour corriger la dispersion de polarisation de mode (PMD) ainsi que d'autres distorsions de transmission dans un signal lumineux. Les mesures de l'état de polarisation/fréquence sur une base intracanaux permettent d'identifier et de caractériser les variations de premier ordre et d'ordre supérieur de l'état de polarisation dans le canal, lesquelles variations sont dues aux distorsions telles que la distorsion PMD. Une fois les variations identifiées et caractérisées, les effets de la distorsion peuvent être compensés et sensiblement supprimés. Ces procédés et appareil ne se limitent pas aux configurations à canal unique mais emploient également des configurations telles que celles utilisées dans les techniques DWDM qui impliquent une pluralité de canaux de communication dans une liaison monofibre.
Menikoff Arthur
Targove James D.
Wein Steven J.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Terapulse Inc.
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