【摘要】 单模光纤折射率剖面由观测传输基模的近场强度分布而计算得出。近场强度的测量采用一个数字化的摄象管和一个用作放大模式近场图的显微镜。这样的系统很适合单模光纤折射率剖面的自动测量。更多还原

【Abstract】 The refractive-index profile of single-mode optical fibers is computed from the observed near-field intensity distribution of the fundamental propagation mode. The near-field intensity is measured with a digitizing vidicon camera and a microscope to magnify the near-field pattern of the mode. The presented system is very suitable for automated measurement of the refractive-index profile of single-mode fibers.更多还原