Assessment of fiber optic communication lines reliability with account of external factors influence

The article deals with the method for the assessment of the fiber-optic communication line reliability taking into account the effect of the optical fiber tension, the temperature influence and the built-in diagnostic equipment errors of the first kind. The reliability is assessed using the theory of Markov chains and probabilistic mathematical modeling. The reliability is assessed in terms of the availability factor. According to the permissible value of the availability factor, it is possible to determine the limiting frequency of FOCL maintenance.