Patent ID: 6626591
Filing Date: 2003-09-30
Classification: H04B,H04J

Abstract:
A method of reducing intensity distortion induced by cross phase modulation in a wavelength division multiplexed optical fiber transmission system comprising a transmission line made up of a plurality of optical fiber segments with repeaters interposed between successive optical fiber segments, the transmission system having N different wavelength channels, where N is an integer greater than unity, wherein, in each repeater interconnecting first and second consecutive fiber segments, a time offset is introduced between the channels in such a manner that compared with an inlet of the first optical segment, the (n+1)th and the nth channels are offset by &tgr;n at an inlet to the second fiber segment, where n is an integer less than or equal to N, where &tgr;n is selected to be greater than zero and less than a value that eliminates correlation between the intensity distortion contributions of each fiber segment.