发明名称 |
METHOD AND SYSTEM FOR POWER MANAGEMENT IN OPTICAL NETWORKS |
摘要 |
<p>Methods and apparatus for optical-power control in an optical network employing wavelength-division multiplexed (WDM) optical-fiber links are devised to circumvent the effect of crosstalk caused by optical-power scattering. Each carrier signal is amplitude-modulated by an identifying tone, with the power of an identifying tone having a predetermined ratio to the power of its carrier signal. A fiber span within an optical-fiber link is tapped at a preferred monitoring point, and the power spectrum of the envelope of the tapped optical signal is measured. To estimate an individual carrier power, a temporary gain is applied and the power of a corresponding tone is measured. To control optical power of each wavelength carrier in several spans in the network, a network controller selects an order of processing the spans of interest, and selects the order of processing of each channel within each span.</p> |
申请公布号 |
EP2033342(B1) |
申请公布日期 |
2014.02.26 |
申请号 |
EP20070734887 |
申请日期 |
2007.05.30 |
申请人 |
ALCATEL LUCENT |
发明人 |
WAN, PING, WAI;REMEDIOS, DERRICK |
分类号 |
H04B10/077;H04B10/079;H04B10/85 |
主分类号 |
H04B10/077 |
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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