一、前言随着低损耗宽带宽光纤的出现以及光纤通信距离的日益增长,光纤连接研究工作也相应显得重要。尽管光纤连接有活动连接和固定连接两种方式,但对于多数光纤通信线路来说,一般都是采用电弧熔焊技术进行永久性固定连接。衡量固定连接做得好坏的一个主要技术参数,是损耗的大小。因此,同测定光纤损耗一样,如何准确测定光纤固定连接点损耗,也是一个值得研讨的问题。 I. INTRODUCTION With the advent of low loss and wide bandwidth optical fiber and the increasing distance of optical fiber communication, research on optical fiber connection also becomes more and more important. Although fiber optic connections have two modes of active connection and fixed connection, for the majority of optical fiber communication lines, permanent fixed connection is generally adopted by arc welding technology. One of the main technical parameters to measure whether a fixed connection is good or bad is the size of the loss. Therefore, with the same determination of optical fiber loss, how to accurately determine the optical fiber fixed connection loss, is also worth discussing.