Methodology for Calculating the Reliability of Optical Fiber in Conditions of Its Degradation

To ensure the quality indicators required in accordance with the Service Level Agreement, various methods of maintenance and repair are used. These include corrective, preventive and predictive methods. The latter method is also called the maintenance method, based on the condition of the object and is considered the most effective. The article considers an optical fiber with degradation modeled using the apparatus of Markov processes. At the same time, degradation states are introduced, at each of which the maintenance process is considered on the basis of predictive and corrective maintenance methods. The monitoring of failures and pre-failures is assumed to be continuous. A mathematical model of reliability on one of the degradation states in continuous time is presented. Expressions are obtained for calculating the availability factor based on the time spent in a given state of degradation in the up and down state for the entire degradation cycle. A mathematical model for calculating reliability based on the consideration of a semi-Markov process is presented.