Simulation and analysis of optical fiber cladding defect reflectance

摘要

It is proposed the model for analysis of the damaged optical fiber reflectance dependence on cladding crack parameters. The model indicates that the contribution to the reflectance of a cracks is determined by its depth, radius and cross-section cracks number. Based on this model, the effects on reflectance are analyzed for cracks of various numbers, different depth and different radius. It is well known, that fatigue characteristics of aged fiber are depended from cracks sizes. By this reason, based on representation model quantified analysis provides a solid base to establish the specifications of inspection criteria of optical fiber predict control by the optical time domain reflectometer (OTDR).