首页>
外国专利>
Method for preventing cracking in optical fiber preform and optical fiber preform obtained by the above method
Method for preventing cracking in optical fiber preform and optical fiber preform obtained by the above method
展开▼
机译:通过上述方法获得的光纤预制件和光纤预制件的防止裂缝的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present disclosure provides optical fiber preforms formed from core canes having large core-clad ratio, intermediate core-cladding assemblies, and methods for making the preforms and core cladding assemblies. The preforms are made with capped core canes. The capping material has a coefficient of thermal expansion less than the coefficient of thermal expansion of the core cane and more closely matched to or lower than the coefficient of thermal expansion of the surrounding cladding monolith in a cane-in-soot process. Presence of the cap reduces stresses that arise from differential thermal expansion of the core cane and cladding materials and leads to preforms having low defect concentration and low probability of failure during subsequent thermal processing steps.
展开▼