首页>
外国专利>
METHOD OF AND APPARATUS FOR THE MEASUREMENT OF THE REFRACTIVE-INDEX PROFILE IN MONOMODE OPTICAL FIBRES
METHOD OF AND APPARATUS FOR THE MEASUREMENT OF THE REFRACTIVE-INDEX PROFILE IN MONOMODE OPTICAL FIBRES
展开▼
机译:用于测量单模光纤的折射率指标曲线的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
The refractive-index value is obtained by radially scanning a near-field image of the fiber output face and by computing, for each image point, the ratio between a first intensity value, obtained in the presence of a mask, having a transmissivity proportional to the fourth power of the transversal beam coordinate and located in a far-field plane, and a second intensity value, obtained in the absence of such a mask. An automated measurement apparatus for implementing the method is also provided.
展开▼