发明名称 |
Stable wavelength division multiplex ring network |
摘要 |
We have recognized that in a Wavelength Division Multiplex (WDM) ring network with a closed loop, the possibility of lasing at Amplified Spontaneous Emissions (ASE) wavelengths exists. In accordance with the present invention, we provide a technique for protecting against lasing in a WDM ring network comprising a plurality of serially connected node links, each node link including a segment of optical fiber and an access node site for adding or dropping one or more active wavelength channels to a transmission bandwidth of the network. The protection means changes the optical transmission characteristics of the transmission bandwidth of the network to ensure that the network loop gain at any wavelength is always less than the network loop loss.
|
申请公布号 |
US6025941(A) |
申请公布日期 |
2000.02.15 |
申请号 |
US19970929926 |
申请日期 |
1997.09.15 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
SRIVASTAVA, ATUL KUMAR;SULHOFF, JAMES W.;SUN, YAN;ZYSKIND, JOHN LEHRER |
分类号 |
H04B10/02;H04B10/04;H04B10/06;H04B10/14;H04B10/18;H04B10/20;H04J14/02;(IPC1-7):H04B10/20;H04B10/08;H04J14/00 |
主分类号 |
H04B10/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|