g652光纤弯曲损耗的研究.doc

天津工业大学2014届本科生毕业论文 天津工业大学 毕业论文 G.652光纤弯曲损耗的研究 姓 名 学 院 理学院 专 业 应用物理学 指导教师 职 称 副教授 2014年6 月5 日 摘 要 伴随着互联网的进一步普及和高带宽应用，市场对网络带宽的需求持续增长。最近几年，全球的运营商都将光纤通信网络建设的重点放在光纤接入网。因此，光纤到户技术FTTH(Fiber To The Home )得到了迅猛的发展。但是，目前所使用的接入网光纤有一个很大的问题，那就是弯曲损耗过大。因此，2009年底，国际电信联盟提出了必威体育精装版的具有弯曲不敏感特性的光纤，也就是G.657光纤，以此来适应市场的需求。和市场上目前使用最广泛的G.652光纤相比，G657光纤的弯曲损耗比较低，其适用于光纤接入网，包括位于光纤接入网终端的建筑物内的各种布线，甚至是弯曲半径最小的墙角。 本文以研究G652光纤的弯曲损耗为目的，首先分析光纤产生弯曲损耗的机理，然后通过设计合理的弯曲性实验，通过弯曲实验测量出G.652光纤相关的弯曲损耗，对G.652光纤的正确使用有着重要的参考价值以及对光纤技术的发展有重要意义。 关键词：抗弯曲光纤；G.657光纤；损耗；G.652光纤；FTTH ABSTRACT With the further popularization of Internet and the high bandwidth applications, the market demand for network bandwidth growth. In recent years, the global operators will focus on the construction of optical fiber communication network in optical access network. Therefore, FTTH technology FTTH (Fiber To The Home) has been the rapid development. However, there is a big problem at present the use of fiber in the access network, the bending loss is too large. Therefore, at the end of 2009, the International Telecommunication Union presented the latest with fiber bend insensitive fiber, also known as G.657, in order to meet the needs of the market. And on the market at present the most widely used G.652 fiber bending loss compared, G657 fiber is relatively low, which is suitable for optical fiber access network, including the fiber access network terminal building wiring, and even the smallest bending radius. The purpose of this paper is to study the G652 fiber bending loss, first analyzes the mechanism of fiber bending loss, then through bending experiment design is reasonable, the bending experiments of bending loss in fiber G.652 related, is important for correct use of G.652 fiber has important reference value and the development of optical fiber technology. Key words：Bending loss；G.657 fiber；Loss；