Aref Chowdhury - Springfield NJ, US Lisa Kathleen Wickham - Ithaca NY, US
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
H04B 10/00
US Classification:
398159, 398147, 398148
Abstract:
A process optically transports digital data over an all-optical long-haul communication path. The process includes transporting digital optical data signals at a selected bit rate and a selected wavelength over a sequence of transmission spans. The sequence includes 70 percent or more of the spans of the long-haul all-optical communication path. Each span of the sequence has a primary local maximum optical power point for the wavelength on a transmission fiber and nearest to an input of the span. The transporting causes a cumulative dispersion of each signal to evolve such that residual dispersions per span are positive over some of the spans and are negative over other of the spans. At the primary local maximum power points, magnitudes of cumulative dispersions of the signals in pico seconds per nanometer remain at less than 32,000 times the inverse of the bit rate in giga bits per second.
Aref Chowdhury - Springfield NJ, US Lisa Kathleen Wickham - Ithaca NY, US
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
H04B 10/00
US Classification:
398148, 398142, 398159, 398147
Abstract:
A process optically transports digital data over an all-optical long-haul communication path. The process includes transporting digital optical data signals at a selected bit rate and a selected wavelength over a sequence of transmission spans. The sequence includes 70 percent or more of the spans of the long-haul all-optical communication path. Each span of the sequence has a primary local maximum optical power point for the wavelength on a transmission fiber and nearest to an input of the span. The transporting causes a cumulative dispersion of each signal to evolve such that residual dispersions per span are positive over some of the spans and are negative over other of the spans. At the primary local maximum power points, magnitudes of cumulative dispersions of the signals in pico seconds per nanometer remain at less than 32,000 times the inverse of the bit rate in giga bits per second.
Method And Apparatus For Extending Optical Communication
Rene-Jean Essiambre - Red Bank NJ, US Lisa Wickham - Basking Ridge NJ, US
Assignee:
LUCENT TECHNOLOGIES INC.
International Classification:
H04B010/00 H04B010/12
US Classification:
398/158000
Abstract:
A method and apparatus is proposed for use in a communication system in which an optical communications path including a plurality of optical spans, each of the optical spans contributing nonlinear distortions to an optical signal passing there-through includes, providing a dispersion pre-compensation to the optical signal in the optical communications path, such that the limiting nonlinear effect that produces signal distortions for long-haul transmission is suppressed, prior to transmission through a plurality of optical spans, and providing a dispersion post-compensation to the optical signal in the optical communications path after transmission through the plurality of optical spans.