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一、前言: 光学纤维折射率剖面是光学纤维的一个十分重要的参数,折射率剖面情况,严重的影响着纤维的传输性能。因之,精确地测量折射率剖面就成了一个重要的研究课题。就目前我们所了解的材料而言,已发表的测量方法大致可分两大类,一是破坏性的:对纤维要做特殊的加工,破坏了原来的光学纤维。另一则是不破坏纤维的原来情况,属于前一类的有:薄片干涉法,反射法远、近场扫描法,等等,属后一类的有:横向
I. Introduction: Optical fiber refractive index profile is a very important optical fiber parameters, refractive index profile, a serious impact on the fiber transmission performance. Therefore, accurate measurement of refractive index profile has become an important research topic. In terms of the materials we know at present, the published measurement methods can be broadly divided into two categories. One is destructive: special processing of the fiber is required to destroy the original optical fiber. The other is not undermining the original situation of the fiber, belonging to the former class are: sheet interference method, reflection far, near-field scanning method, etc., which belong to the latter category are: horizontal