Link optimisation for DWDM transmission with an optical phase conjugation

6 pags., 6 figs. .-- OCIS codes: (060.1660) Coherent communications; (060.2320) Fibre optics amplifiers and oscillators; (060.4370) Nonlinear optics, fibers. .-- 18th International Conference on Transparent Optical Networks (ICTON), Trento, Italy, 10-14 July 2016We numerically optimise the span length that gives the lowest signal power asymmetry between transmitted and conjugated channels in a DWDM transmission with fibre based mid-link optical phase conjugation.We acknowledge the support of the EU through the Marie Skłodowska-Curie IF CHAOS for P. Rosa (658982) and FP7 ITN programme ICONE (608099), Spanish MINECO grant ANOMALOS (TEC2015-71127-C2) and Comunidad de Madrid grant SINFOTON (S2013/MIT-2790-SINFOTON-CM).Peer Reviewe