用于大容量光传输系统的新型光纤  

Novel Optical Fibers for High-Capacity Transmission System

作　　者：李明军 陈皓 

机构地区：[1]康宁股份有限公司科学技术部 [2]康宁光通信中国公司,上海200233

出　　处：《电信科学》2014年第6期1-15,共15页Telecommunications Science

摘　　要：多媒体和数据应用程序的快速扩展,驱动骨干网的带宽需求量以前所未有的速率增长。骨干容量增长的同时也给数据中心的带宽和互联带来了更多的挑战。目前光纤制造厂商正不断改善光纤的性能,以满足长途和短距离应用的需求。短期内通过改进传统光纤技术虽然可增加系统容量,但研究表明,单模光纤的传输容量正快速接近香农理论极限。采用空分复用的光纤技术可以克服该限制,为未来的容量增长提供新的解决方案。在本文中,将讨论提高光纤传输系统容量的新型光纤。对应用于长途传输的常规光纤而言,先进的数字信号处理可对色散和偏振模色散等损伤进行完全补偿,因此光纤的衰减和有效面积成为可进一步优化的参数,讨论以上两个参数的品质因数,总结超低损耗和大有效面积光纤的最新研究成果。对于短距离应用,回顾提高多模光纤带宽的方法,讨论多模光纤的发展趋势。对于下一代光纤,重点研究可实现空分复用技术的多芯和少模光纤,该技术可增加系统容量一个数量级。阐述多芯和少模光纤的设计思路,总结该技术的最新进展,最后讨论使用多芯和少模光纤所面临的主要挑战。Novel optical fibers for increasing capacity for transmission system was discussed.For conventional fibers for long haul transmission,because transmission impairments such as chromatic dispersion,polarization-mode dispersion can be perfectly compensated for by digital signal processing,the only fiber parameters that can be optimized further are fiber attenuation and effective area.System figure of merit for the two parameters was discussed and recent results on ultra-low loss and large effective area fibers were presented.For short reach applications,the cuTent efforts in improving multimode fiber bandwidth were reviewed and new trends in multimode fibers to meet future bandwidth demand were discussed.For next generation fibers,multicore and few mode fibers for space division multiplexing would be focused on,which has the potential to increase the capaciiy by an order of magnitude.Fiber design considerations were presented and recent progress on multicore and few mode fibers was reviewed.Finally,major challenges in space division multiplexing applications using multicore and few mode fibers were discussed.

关 键 词：超低损耗光纤 大有效面积光纤 空间复用 多芯光纤 少模光纤 

分 类 号：TN929.1[电子电信—通信与信息系统]