METHOD OF DESIGNING STRUCTURE OF FIBRE-OPTIC COMMUNICATION NETWORK Russian patent published in 2025 - IPC H04W40/00 H04B10/27 

FIELD: optics.

SUBSTANCE: invention relates to optical systems, specifically to communication networks, and can be used in designing and building new or improving existing fibre-optic communication networks (FOCN). Said technical result is achieved by designing a multi-ring structure of FOCN by laying additional lines N_mrs=n_rs/2 in its ring structure so that each communication line N_mrs connects two network communication nodes (NCN), between which two other NCNs would be located, and located inside the ring structure of the FOCN, the version of connecting the NCN by additional communication lines is determined by the complete sequential enumeration of the NCN n_i according to the criterion of the minimum total length of the communication lines in the multi-ring structure, switching communication nodes (SCN) n_k are connected to additional lines N_mrs in points of their intersection, S versions of switching of one-dimensional routes are formed into three independent multidimensional routes of messages transmission.

EFFECT: increased survivability of FOCN due to formation of a network structure, which provides switching of at least three independent multidimensional message transfer routes between all network communication nodes with a minimum total length of additional communication lines, and rapid switching between them in case of increase in optical signal attenuation a_os>a_add in one or more one-dimensional routes of their components.

1 cl, 10 dwg