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The aspects of the application of multichannel optical fibers in cables and transmission systems of fixed networks F5G are investigated. The loop of optical cable quality and quality management with ensuring the required efficiency are considered. Analytical expressions are given to evaluate the throughput and efficiency of multichannel fibers, and numerical values of efficiency are given. The random process of fiber irregularity with the behavior of directional and resultant modes is described, experimental data are presented. The solution of the problem of optimizing the linear path of the transmission system has been described, the maximum length of the path without intermediate signal regeneration has been calculated.
Korshunov et al. (Tue,) studied this question.