Optical transmission system with reduced kerr effect...

Details Optical transmission system with reduced kerr effect... Optical transmission system with reduced kerr effect...

H - Electricity

04

B

H04B 10/12 (2006.01) H04B 10/18 (2006.01)

Patent

CA 2332696

An optical transmission system is formed to include an optical phase conjugator at alternate repeater sites to minimize the presence of four-wave mixing and other Kerr effect nonlinearities in systems using optical fiber transmission paths (particularly in systems using DWDM and launching relatively high power signals into the low dispersion fiber). Raman gain is included in each fiber span (or in alternate fiber spans) so as to provide a "negative absorption" along the length of the fiber and thereby provide for essentially symmetrical power distribution along the length of each span, where the presence of such a symmetric power distribution on each side of an optical phase conjugator has been found to significantly improve its performance.

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