Thermal Fatigue Life Prediction for Optical Fibers Based on Nominal Stress Method

Optical fiber has important applications in the communication field and plays an increasingly important role in aerospace communication. However, thermal fatigue may occur in optical fibers under temperature cycling. This paper describes a method for predicting the thermal fatigue life of optical fibers under temperature cycling. The thermal stress distribution in optical fiber was obtained through the finite element modeling and simulation. And then the thermal fatigue life of the optical fiber was predicted based on the nominal stress method. The combination of the finite element method and the nominal stress method provides a simple and practical way to predict the fatigue life of optical fibers under temperature cycling.