In this paper, it is reported that we have first time measured the FFP,NFP and the Effective Area of single mode fibers with difference Refractive Index Profiles by the Variable Aperture Technique.

• 本文介绍用可变孔径法测试出各种折射率剖面结构的单模光纤的远场和近场分布，以及这些光纤的有效面积。