Stress and Index Variation for the Drawing Speed

摘要

Residual stresses and refractive indices of the depressed index clad fiber were measured for the various drawing speed, 20, 23.3, 26.7, and 30m/s and the stress-index relation are investigated. In the interface between the regions, residual stress has continuous change. For drawing speed, the absolute value of stress linearly increased in the core and cladding, that is, more compressive stress was applied after drawing process. And the increasing rate of refractive index also had linearity for drawing speed.