发明名称 |
SINGLE-FIBER PROTECTION IN TELECOMMUNICATIONS NETWORKS |
摘要 |
A solution for detecting and recovering from a failure in a protected single-fiber passive optical network. A detector is used to detect the degradation in power level of optical signals. Furthermore, the invention discloses a variable symmetric split ratio approach to improve the number of splits (e.g. the number of ONUs). A single-fiber passive optical network is disclosed that uses a plurality of passive nodes connected in the optical fiber between the interfaces, wherein in the passive nodes 2-by-2 splitters/combiners are used to couple optical power from and into the optical fiber at a predetermined split ratio. |
申请公布号 |
EP1652322(A1) |
申请公布日期 |
2006.05.03 |
申请号 |
EP20040735903 |
申请日期 |
2004.07.02 |
申请人 |
NOKIA CORPORATION |
发明人 |
YE, YINGHUA;PIETILAEINEN, ANTTI |
分类号 |
H04B;H04B10/02;H04B10/08;H04B10/213;H04J3/16;(IPC1-7):H04B10/02 |
主分类号 |
H04B |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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