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2015: From nonlinear noise model towards record working distances of fiber-optical communication links

MSU physicists together with their colleagues from NSU, T8 and OFS companies developed a model of forming and accumulation of nonlinear interferometric noises in fiber-optical coherent communication systems. This model has been experimentally verified and used for improvement of the existing coherent optical communication systems. The record distance achieved for non-regeneration information transfer in surface communications lines is up to 6000 km for trasferring of 80 spectral channels each of 100 Gb/s with the total capacity of 8 Tb/s.

The results of this work have been published in the papers: V.A. Konyshev, A.V. Leonov, O.E. Nanii, A.G. Novikov, V.N. Treshchikov, R.R. Ubaydullaev. “Accumulation of nonlinear noise in coherent communication lines without dispersion compensation”, Opt. Commun. 349, 19-23 (2015); V.A. Konyshev, A.V. Leonov, O.E. Nanii, V.N. Treshchikov, R.R. Ubaydullaev, 'New method to obtain optimum performance for 100 Gb/s multi-span fiber optic lines', Opt. Commun. 355, 279-284 (2015); A.A. Redyuk, O.E. Nanii, V.N. Treshchikov, V. Mikhailov, M.P. Fedoruk, '100 Gb/s coherent DWDM system reach extension beyond the limit of electronic dispersion compensation using optical dispersion management', Laser Phys. Lett. 12, 025101 (2015).