一、前言立田等人发表了用反射方法测定光纤维的折射率分布。我们认为在评价已制成的纤维的折射率分布方面,这个方法是适用的,即以手头所有的部件进行了试制。主要着眼点是在光学系统和电气系统构成的简易,以及测量精度方面,报导了在实用上满足要求的测量精度的制造装置。 First, the foreword State field, who published a reflection method to determine the optical fiber refractive index distribution. We think this method is suitable for evaluating the refractive index profile of finished fibers, ie prototypes are made with all the components on hand. The main focus is on manufacturing devices that meet the required measurement accuracy in terms of simplicity of optical systems and electrical systems and measurement accuracy.