发明名称 |
Noise reduction in optical communications networks |
摘要 |
An optical network node for an n-channel dense wavelength division multiplexing (DWDM) optical communications network, includes an add path for adding an n-channel wavelength multiplex onto the network. The add path has an n-channel signal combiner for combining the n signal channels. An optical amplifier amplifies an output of the signal combiner. A multichannel wavelength selective filter with variable-per-channel attenuation filters out noise from the amplifier on a channel which carries no content to be added to the network, and controls amplitude of signals in channels to be added to the network. An add coupler couples the add path to the network. |
申请公布号 |
US8204379(B2) |
申请公布日期 |
2012.06.19 |
申请号 |
US20100948185 |
申请日期 |
2010.11.17 |
申请人 |
CLARINGBURN HARRY RICHARD;SHARRATT MICHAEL;ERICSSON AB |
发明人 |
CLARINGBURN HARRY RICHARD;SHARRATT MICHAEL |
分类号 |
H04J14/02;H04Q3/52;H04B10/02;H04B10/12;H04B10/13;H04B10/135;H04B10/14;H04B10/18;H04J14/00 |
主分类号 |
H04J14/02 |
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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