• Manko Oleksandr head of the educational and methodical cabinet of the Kiev College of Communications, professor of the chair of telecommunications of the Odessa National Academy of Communications, Odessa, Ukraine, https://orcid.org/0000-0002-2131-3597
  • Katerina Domracheva Senior Lecturer of the Department of Telecommunication Systems, State University of Telecommunications, Kyiv, Ukraine, https://orcid.org/0000-0001-6126-7698
  • Natalia Bokla Candidate of Technical Sciences, Senior Lecturer of the Department of Automated design, National University of Lviv Polytechnic, Lviv, Ukraine, https://orcid.org/0000-0002-8919-6622
  • Ievgenii Shestopal Post-graduate student of the Department of Telecommunication Systems, State University of Telecommunications, Kyiv, Ukraine, https://orcid.org/0000-0003-1322-1163




optical channel, transmission rate, error rate, optical soliton interchannel effect, spectral width


Background. Currently, communication networks are under development of high-speed transmission technology for single channel fiber optic transmission systems, along with intensive introduction of Wavelength Division Multiplexing
technology. Thus there are variants of optical channels design with different transmission rate, which may differ by an order or more, e.g., in the STM-16 standard, it is 2.5 Gbit / s, and STM-256 standard - 40 Gbit / s. Thus, issues arise with respect to the comparison of frequency resource in various transmission technologies that provide certain information bandwidth.
Objective. The aim of the paper is to find solutions that can increase information throughput of FOCL at constant frequency resource.
Methods. FOCL analysis with frequency multiplexing showed the feasibility of a smaller number of channels but with a higher data rate in each channel. In addition, a perspective use of soliton transmission mode to increase capacity is shown.
Results. It was shown that to improve the wavelength division information-bandwidth transmission system in a fixed wavelength band it is plactical to use a minimum number of optical channels while increasing the transmission rate in each of them.
Conclusions. The possibility to improve information throughput by increasing the number of channels limited by the transmission band of the optical amplifiers. A considerable part of the frequency resource is used for intervals between the optical channels in order to maintain the requirements for inter-channel effect and consideration of the laser frequency instability and its spectral linewidth. Thus, there is a certain margin for further increase of FOCL throughput. This can be achieved by increasing the transmission speed in each optical channel while reducing their number.
Keywords: optical channel; transmission rate; error rate; optical soliton interchannel effect; spectral width.


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