【摘要】 在APON和EPON相互竞争的推动下,一种无源光网络的新技术———GPON出现了。ITU-T已经通过了部分GPON标准,GPON正在成为光接入网领域的研究热点。概述了GPON技术的产生与发展现状,详细阐述了GPON在系统结构、层次模型、基本技术要求、传输复用方式及成帧结构和生存性等方面的技术特征,并指出由此带来的GPON特有的优势,进而分析了GPON系统的应用前景。更多还原

【Abstract】 The competition between APON and EPON drove GPON,a new passive optical network technolo-gy,to come into being.ITU-T just fin-ished some recommendations on GPON.GPON became a highlight of optical access network.This paper first summarized emergence and develop-ment of GPON,and then described sys-tem structure,layered model,basic technical requirements,transmission and multiplex method,framing struc-ture and survivability of GPON system.Finally the paper pointed out GPON’s advantages and analyzed GPON’s ap-plication prospect.更多还原