Patent ID: 6768872
Filing Date: 2004-07-27
Classification: H04B

Abstract:
An optical transmission system comprising:an optical transmitter for outputting WDM signal light; an optical transmission line having a plurality of optical amplification repeater spans to transmit the WDM signal light output from the optical transmitter; and an optical receiver for receiving the WDM signal light propagated on the optical transmission line, wherein the optical amplification repeater spans of the optical transmission line each comprises, a first optical repeater amplifier for optically amplifying the WDM signal light, an optical transmission fiber of plus chromatic dispersion for transmitting the WDM signal light output from the optical repeater amplifier, and a local area dispersion compensator of minus chromatic dispersion for compensating a dispersion slope as well as compensating accumulated chromatic dispersion caused by the optical transmission fiber so that average chromatic dispersion in the respective span becomes a predetermined value Dlocal, wherein Dlocal is no less than 1 ps/nm/km and no more than 4 ps/nm/km.