自从光纤被用于局域网（ＬＡＮ）后，与其它布线类型相比，它的一个最重要的优点就是它能够满定越来越高的传输速率和不断增长的数据量。直到现在，最终用户仍被告知，在用户网络内，绝大多数ＬＡＮ使用的标准６２．５微米多模光纤几乎蕴藏着无限的带宽。但是，随着面向更高速 Since optical fiber is used in a local area network (LAN), one of its most important advantages over other types of cabling is its ability to handle higher and higher data rates and ever-increasing data volumes. Until now, end users are still being told that the vast majority of LANs in the subscriber network have virtually unlimited bandwidth for their standard 62.5-micron multimode fiber. However, with the more high-speed