Static fatigue parameters and environmental factors effects on optical fiber lifetime

In order to study the influence of environmental factors and static fatigue parameters on the fiber lifetime, this paper adopted the two-point bending method to focus on the influence of temperature and humidity on the fiber life and fatigue parameters, on this basis, the reliability of optical fiber under the diurnal temperature difference in actual use environment is simply simulated and verified by temperature cycle experiment, and the performance of two kinds of optical fiber with obvious difference in fatigue parameters was compared under harsh conditions. Experimental results show that environmental factors have significant influence on fiber lifetime and fatigue parameters, the service lifetime and fatigue parameters of fiber will decrease sharply under high temperature and high humidity. Under the same environmental conditions, the fiber with larger fatigue parameters always has a longer life than the fiber with smaller fatigue parameters. The static fatigue parameter values tested in laboratory environment are of practical significance to judge the fiber lifetime.