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公开(公告)号：US06646790B2
公开(公告)日：2003-11-11
申请号：US10058879
申请日：2002-01-28
申请人： Simon P. Parry , Eric S. Maniloff , Gary Mak , Andy Rowland , Franz H. Mok
发明人： Simon P. Parry , Eric S. Maniloff , Gary Mak , Andy Rowland , Franz H. Mok
IPC分类号： H01S300
CPC分类号： H01S3/13 , H01S3/1305 , H01S3/131 , H01S5/0683 , H01S5/50
摘要： In a method and apparatus for tracking dynamic characteristics of an optical amplifier, optical signal probes are used to determine the gain and the corner frequency of the optical amplifier. A first optical probe having a predetermined modulation frequency above an expected corner frequency of the amplifier is used to estimate the gain of the optical amplifier. A second optical probe signal having a second predetermined modulation frequency at or below the expected corner frequency of the amplifier is used to estimate the corner frequency. These parameters can be used to optimize gain control of an optical amplifier.
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2.发明授权Communicating data units in a communications network that provides failure protection 失效在提供故障保护的通信网络中通信数据单元公开(公告)号：US08213300B1
公开(公告)日：2012-07-03
申请号：US11642202
申请日：2006-12-20
IPC分类号： H04L12/28
CPC分类号： H04L45/28 , H04L49/557 , H04L69/40
摘要： A node comprises a first communications interface to a customer network element, where the first communications interface is part of a group of communications interfaces to the customer network element to provide failover support. The node further includes a network interface to communicate over a trunk group to other nodes, where the trunk group includes a primary trunk and a secondary trunk. Just one of the primary and secondary trunks is active for communicating data units.
摘要翻译： 节点包括到客户网络元件的第一通信接口，其中第一通信接口是到客户网络元件的一组通信接口的一部分以提供故障转移支持。 节点还包括网络接口，用于通过中继线群组与其他节点进行通信，其中中继线群组包括主干线和辅助干线。 只有主要和次要树干之一才能用于传达数据单元。
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公开(公告)号：US08503290B2
公开(公告)日：2013-08-06
申请号：US13495184
申请日：2012-06-13
IPC分类号： H04L12/28
CPC分类号： H04L45/28 , H04L49/557 , H04L69/40
摘要： A node comprises a first communications interface to a customer network element, where the first communications interface is part of a group of communications interfaces to the customer network element to provide failover support. The node further includes a network interface to communicate over a trunk group to other nodes, where the trunk group includes a primary trunk and a secondary trunk. Just one of the primary and secondary trunks is active for communicating data units.
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公开(公告)号：US06798934B2
公开(公告)日：2004-09-28
申请号：US10003252
申请日：2001-12-06
申请人： Simon P. Parry , David W. Brown , Bhupendra Patel
发明人： Simon P. Parry , David W. Brown , Bhupendra Patel
IPC分类号： G02B635
CPC分类号： H04Q11/0062 , G02B6/355 , G02B6/3552 , G02B6/356 , H04Q2011/0083
摘要： An optical data throughput protection switch is provided which provides access to a data-carrying first optical path in a manner which protects the data from interference from equipment utilizing said access, and eliminates optical connectors along the first optical path. The protection switch includes a controlling means and a controllable switch which is optically coupled to the first optical path the termination of a second optical path. The controllable switch is controlled by the controlling means and functions to enable and disable optical coupling between the termination, of the second optical path and the first optical path. This may be effected in a manner that allows access to the first optical path when there is no data traffic thereon, and denies access thereto when data is present, resulting in data throughput on the first optical path being protected from signals of the second optical path.
摘要翻译： 提供了一种光数据吞吐量保护开关，其以保护数据免受来自利用所述访问的设备的干扰的方式提供对承载数据的第一光路的访问，并且消除沿着第一光路的光连接器。 保护开关包括控制装置和可控开关，该可控开关光耦合到第一光路，第二光路的终端。 可控开关由控制装置控制，并且用于启用和禁用第二光路的终端与第一光路之间的光耦合。 这可以以允许在其上没有数据业务时访问第一光路的方式实现，并且当数据存在时拒绝对其进行访问，导致第一光路上的数据吞吐量受到第二光路的信号的保护 。
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