青藏直流联网工程通信光纤选型分析

The Type of Fiber Selecting in OPGW Optical Communication Works of Qinghai-Xizang Direct Current Networking Program

在OPGW光通信工程中,光纤的选择十分慎重。文章通过详细阐述光纤选型的意义和常见光纤以及新型超低损耗光纤的结构、特点等,并结合青海-西藏±400 kV直流联网工程配套OPGW光通信工程中的光缆运行环境、中继段长度等因素,在工程中部分采用新型的超低损耗光纤,是国内工程中首次使用超低损耗光纤。

It is a care needed task to select optical fiber in OPGW optical communication engineering.The significance of optical fiber selection and the type of common fiber are expounded in this paper.Besides,the structure and characteristics of new type ULL（ultra-low loss） fiber are represented in this article.The operational environment of fiber and length of relay in OPGW optical communication works of Qinghai-Xizang ±400 kV direct current networking program are considered in this paper.The ULL fiber has been partially applied to this program.It is the first time to employ the ULL fiber to the engineering program in home-area.