-
公开(公告)号：US08565602B2
公开(公告)日：2013-10-22
申请号：US12409067
申请日：2009-03-23
IPC分类号： H04J14/02
CPC分类号： H04B10/572
摘要： Consistent with the present disclosure, a transmitter is provided that includes first and second stages of wavelength locking circuitry. The first stage includes a tunable optical filter that sweeps through the spectrum of a WDM signal at a predetermined rate. A first photodiode senses a tapped portion of the output of the tunable filter. The remaining light is fed to the second stage, which includes a second optical filter, typically having a fixed transmission characteristic. A second photodiode senses the light that passes through the second filter. By sweeping the WDM spectrum the tunable filter can be used to identify the peaks in the WDM spectrum, with each peak corresponding to an optical signal wavelength and occurring at a particular time interval during the sweep. Thus, each optical signal wavelength can be associated with a particular time interval in the sweep, and, if no peak is identified during the sweep, a fault can be identified as either a laser failure or that the optical signal wavelength has drifted or “hopped” to another optical signal wavelength. Once having identified that an optical signal has hopped, the optical source outputting that optical signal can be appropriately controlled to output light at the correct wavelength.
摘要翻译： 根据本公开，提供了包括波长锁定电路的第一和第二阶段的发射机。 第一级包括以预定速率扫描WDM信号的频谱的可调谐滤光器。 第一光电二极管感测可调谐滤波器的输出的抽头部分。 剩余的光被馈送到第二级，其包括通常具有固定传输特性的第二滤光器。 第二光电二极管感测通过第二滤光器的光。 通过扫描WDM频谱，可调谐滤波器可用于识别WDM频谱中的峰值，每个峰值对应于光信号波长，并在扫描期间以特定时间间隔发生。 因此，每个光信号波长可以与扫描中的特定时间间隔相关联，并且如果在扫描期间没有识别到峰值，则可以将故障识别为激光故障或者光信号波长漂移或“跳跃” “到另一个光信号波长。 一旦识别到光信号已经跳跃，则可以适当地控制输出该光信号的光源以输出正确波长的光。
-
公开(公告)号：US20100239246A1
公开(公告)日：2010-09-23
申请号：US12409067
申请日：2009-03-23
IPC分类号： H04B10/08
CPC分类号： H04B10/572
摘要： Consistent with the present disclosure, a transmitter is provided that includes first and second stages of wavelength locking circuitry. The first stage includes a tunable optical filter that sweeps through the spectrum of a WDM signal at a predetermined rate. A first photodiode senses a tapped portion of the output of the tunable filter. The remaining light is fed to the second stage, which includes a second optical filter, typically having a fixed transmission characteristic. A second photodiode senses the light that passes through the second filter. By sweeping the WDM spectrum the tunable filter can be used to identify the peaks in the WDM spectrum, with each peak corresponding to an optical signal wavelength and occurring at a particular time interval during the sweep. Thus, each optical signal wavelength can be associated with a particular time interval in the sweep, and, if no peak is identified during the sweep, a fault can be identified as either a laser failure or that the optical signal wavelength has drifted or “hopped” to another optical signal wavelength. Once having identified that an optical signal has hopped, the optical source outputting that optical signal can be appropriately controlled to output light at the correct wavelength.
摘要翻译： 根据本公开，提供了包括波长锁定电路的第一和第二阶段的发射机。 第一级包括以预定速率扫描WDM信号的频谱的可调谐滤光器。 第一光电二极管感测可调谐滤波器的输出的抽头部分。 剩余的光被馈送到第二级，其包括通常具有固定传输特性的第二滤光器。 第二光电二极管感测通过第二滤光器的光。 通过扫描WDM频谱，可调谐滤波器可用于识别WDM频谱中的峰值，每个峰值对应于光信号波长，并在扫描期间以特定时间间隔发生。 因此，每个光信号波长可以与扫描中的特定时间间隔相关联，并且如果在扫描期间没有识别到峰值，则可以将故障识别为激光故障或者光信号波长漂移或“跳跃” “到另一个光信号波长。 一旦识别到光信号已经跳跃，则可以适当地控制输出该光信号的光源以输出正确波长的光。
-
公开(公告)号：US09866493B2
公开(公告)日：2018-01-09
申请号：US13853758
申请日：2013-03-29
申请人： Abhijeet D. Deore , Manish Chandra , Dharmendra Naik , Kiran Kumar Dintakurthi , Konstantin Saunichev , Biao Lu , Steven Joseph Hand , Sudhanshu Verma
发明人： Abhijeet D. Deore , Manish Chandra , Dharmendra Naik , Kiran Kumar Dintakurthi , Konstantin Saunichev , Biao Lu , Steven Joseph Hand , Sudhanshu Verma
IPC分类号： G06F15/173 , H04L12/823 , H04L12/911 , H04L12/927
CPC分类号： H04L47/32 , H04L47/788 , H04L47/805 , H04L47/829
摘要： A network device may receive an activation instruction. The network device may provide network resources. The activation instruction may request the network device to activate a particular network resource that is deactivated. The activation instruction may be associated with a license that identifies the particular network resource and identifies a resource request of a user. The network device may configure, based on the activation instruction, a component of the network device to activate the particular network resource. The component, after being configured to activate the particular network resource, may allow data flows, received by the network device, to be provided towards a destination device using the particular network resource. The network device may receive a data flow and provide, by the component of the network device, the data flow towards the destination device using the particular network resource.
-
公开(公告)号：US20110158229A1
公开(公告)日：2011-06-30
申请号：US12647342
申请日：2009-12-24
IPC分类号： H04L12/50
CPC分类号： H04L47/22 , H04L47/365
摘要： Consistent with the present disclosure, client data, which may include multiplexed data sub-streams, is supplied to an ingress node of a network. Each sub-stream typically has a corresponding data rate, i.e., an original data rate, prior to multiplexing. The client data is encapsulated in a plurality of successive frames that are output from the ingress node and propagate, typically through one or more intermediate nodes, to an egress node. At the egress node, data rates associated with the sub-streams included in each frame are determined based on the amount of client data in each frame. The data rates are then averaged over a given number of frames to thereby filter any wander or deviation in the client data rate. Based on the averaged data rate, justification opportunities are added to the client data in each sub-stream, which are then multiplexed into frames that are output from the egress node. By including the justification opportunities, the effective rate of each sub-stream may be set equal to the original data rate when the sub-streams are demultiplexed after being output from the egress node. An advantage of the present disclosure is that the justification opportunities, are not generated based solely on clock signals generated by PLL circuits. As a result, fewer PLL circuits are required, thereby simplifying system design and minimizing power consumption.
摘要翻译： 根据本公开，可以将包括多路复用数据子流的客户端数据提供给网络的入口节点。 每个子流在复用之前通常具有对应的数据速率，即原始数据速率。 客户端数据被封装在从入口节点输出并且通常通过一个或多个中间节点传播到出口节点的多个连续帧中。 在出口节点处，基于每帧中的客户端数据的量来确定与包括在每个帧中的子流相关联的数据速率。 然后在给定数量的帧上对数据速率进行平均，从而过滤客户端数据速率中的任何漂移或偏差。 基于平均数据速率，将每个子流中的客户端数据加入调整机会，然后将其合并到从出口节点输出的帧中。 通过包括调整机会，在从出口节点输出之后子流被解复用时，每个子流的有效速率可被设置为等于原始数据速率。 本公开的优点在于，调整机会不是仅仅由PLL电路产生的时钟信号产生。 因此，需要更少的PLL电路，从而简化系统设计并最大限度地降低功耗。
-
公开(公告)号：US08705402B2
公开(公告)日：2014-04-22
申请号：US12647342
申请日：2009-12-24
IPC分类号： H04J3/07 , H04L12/50 , G06F15/173
CPC分类号： H04L47/22 , H04L47/365
摘要： Consistent with the present disclosure, client data, which may include multiplexed data sub-streams, is supplied to an ingress node of a network. Each sub-stream typically has a corresponding data rate, i.e., an original data rate, prior to multiplexing. The client data is encapsulated in a plurality of successive frames that are output from the ingress node and propagate, typically through one or more intermediate nodes, to an egress node. At the egress node, data rates associated with the sub-streams included in each frame are determined based on the amount of client data in each frame. The data rates are then averaged over a given number of frames to thereby filter any wander or deviation in the client data rate. Based on the averaged data rate, justification opportunities are added to the client data in each sub-stream, which are then multiplexed into frames that are output from the egress node. By including the justification opportunities, the effective rate of each sub-stream may be set equal to the original data rate when the sub-streams are demultiplexed after being output from the egress node. An advantage of the present disclosure is that the justification opportunities, are not generated based solely on clock signals generated by PLL circuits. As a result, fewer PLL circuits are required, thereby simplifying system design and minimizing power consumption.
摘要翻译： 根据本公开，可以将包括多路复用数据子流的客户端数据提供给网络的入口节点。 每个子流在复用之前通常具有对应的数据速率，即原始数据速率。 客户端数据被封装在从入口节点输出并且通常通过一个或多个中间节点传播到出口节点的多个连续帧中。 在出口节点处，基于每帧中的客户端数据的量来确定与包括在每个帧中的子流相关联的数据速率。 然后在给定数量的帧上对数据速率进行平均，从而过滤客户端数据速率中的任何漂移或偏差。 基于平均数据速率，将每个子流中的客户端数据加入调整机会，然后将其合并到从出口节点输出的帧中。 通过包括调整机会，在从出口节点输出之后子流被解复用时，每个子流的有效速率可被设置为等于原始数据速率。 本公开的优点在于，调整机会不是仅仅由PLL电路产生的时钟信号产生。 因此，需要更少的PLL电路，从而简化系统设计并最大限度地降低功耗。
-
-
-
-
搜索结果
5 条记录 (耗时 0.027 秒)
