Simple ring-type passive optical network with two-fiber protection scheme and performance analysis

被引：12

作者：

Lee, Byung Tak ^{[1
]}

Lee, Mun Seob ^{[1
]}

Song, Ho Young ^{[1
]}

机构：

[1] ETRI, Opt Commun Res Ctr, Kwangju 500480, South Korea

来源：

OPTICAL ENGINEERING | 2007年 / 46卷 / 06期

关键词：

access networks; PON; ring; protection;

D O I：

10.1117/1.2746929

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simple passive optical network with ring-type distributed optical networking units (ONUs) is proposed. The ring protection is performed by a clockwise and a counterclockwise circulating fiber. The protection-and-restoration time is measured to be less than 5 s, and depends on the optical switching and the autodiscovery process time. In spite of additional devices for protection, the system reliability is enhanced so that the expected downtime decreases from 41.3 to 28.9 min/yr. The optimum condition to support the maximum number of ONUs is derived and verified by an optical link simulation. (c) 2007 Society of Photo-Optical Instrumentation Engineers.

引用

页数：6