光系统领域的发展——介绍上海光纤报告会  

Trends in Optical Systems — An Introduction about Optical Fiber Report Meeting in Shanghai

作　　者：唐仁杰[1] 

机构地区：[1]武汉邮电科学研究院

出　　处：《光通信研究》1998年第5期58-62,共5页Study on Optical Communications

摘　　要：自１９９０年到２１世纪初，通信对带宽的需求呈指数增长；传输技术正向高比特率和密集波分复用（ＤＭＤＭ）发展；正在研究以统计法确定偏振模色散（ＰＭＤ）的规范；对于多芯数光缆的需求增加使得光纤带光缆前景广阔；用具有正色散的真波光纤与负色散的真波光纤相间连接的系统可不需色散补偿，最适于陆地长途干线应用。增加光纤的有效面积可克服非线性效应。但是，现有的大有效面积光纤（ＬＥＡＦ）存在着零色散斜率高、对弯曲敏感等问题，对于陆上应用并不理想，最适于海缆应用。性能全面优化的大有效面积光纤正在发展中。Since the year 1990 till to the early of 21 century ,the telecommunication demand for bandwidth has been increasing exponentially. Transmission technology is moving toward higher bit rates per wavelength and to dense wavelength division multiplexing (DWDM).The specifications to determine polarization mode dispersion (PMD) coefficient with statistical methods are under consideration. The demand on high count fiber cable is increasing thereby increasing the applications for ribbon cable. The systems with alternating positive and negative dispersion TrueWave fibers need no dispersion compensation and provide better performance , which is the best choice for long distance terrestrial networks. The nonlinear effects can be reduced by increasing the fiber effective area .But present large effective area fibers (LEAF) still have some problems with higher zero dispersion slope and bending sensitivity, it is not ideal for terrestrial application and it is best for submarine cables. The optimum LEAF are still under development.

关 键 词：光纤 偏振模色散 光纤带光模 真波光纤 

分 类 号：TN818.01[电子电信—信息与通信工程]