V. A. Konyshev, A. V. Leonov, O. E. Nanii, A. G. Novikov, P. V. Skvortsov, V. N. Treshchikov, R. R. Ubaydullaev, “Experimental study and numerical modelling of a 3 × 100G DP-QPSK superchannel”, Kvantovaya Elektronika, 2017, Volume 47, Number 8,Pages <nobr>767

This article is cited in 2 papers

Fibreoptic communication

Experimental study and numerical modelling of a 3 × 100G DP-QPSK superchannel

V. A. Konyshev^a, A. V. Leonov^a, O. E. Nanii^ab, A. G. Novikov^a, P. V. Skvortsov^ac, V. N. Treshchikov^ad, R. R. Ubaydullaev^a

^a "T8" LLC, Moscow
^b Lomonosov Moscow State University
^c Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region
^d Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences

Abstract: Crosstalk effects are studied experimentally in a DWDM line with 100G DP-QPSK channels at a frequency convergence of the channels (three channels with a frequency separation of 50, 37.5 and 33 GHz) in the C-band. Spans of 100 km in length are used, with the number of spans varying from one to six. The required optical signal-to-noise ratio (OSNR_R) is determined experimentally for a different number of spans, interchannel intervals and input power. We propose a theoretical model based on the numerical modelling that describes the influence of adjacent channels at a strong convergence. The model is calibrated using the obtained experimental data. Based on the proposed model, we calculate the maximal value of the spectral efficiency in systems with a dense arrangement of 100G DP-QPSK channels (~3.2 bit s^-1 Hz^-1).

Keywords: superchannel, spectral efficiency, crosstalk, channel capacity, Gaussian noise, BER, OSNR.

Received: 02.05.2017
Revised: 15.06.2017