Abstract: The influence of the optical fiber at the inflection point in the optical fiber loop on the performance and mechanical reliability of the optical fiber loop is analyzed theoretically and experimentally. The bending stress and curing stress of the optical fiber at the inflection point in the loop are greater than those of the optical fiber at other positions in the optical fiber loop. Through the stress comparison of different parts of the optical fiber loop,it is concluded that the optical fiber at the inflection point in the optical fiber loop can better affect the performance and mechanical reliability of the optical fiber loop. This argument can provide reference for the structural design structure of optical fiber loop.

Key words: optical fiber loop, optical fiber at inflection point, bending stress, adhesive thickness