专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

US20110007232A1 POLARIZATION CONTROL SYSTEMS AND METHODS WITH ENDLESS POLARIZATION TRACKING USING A DITHERING ALGORITHM 有权
标题翻译：极化控制系统和方法采用无穷大的算法进行无极化追踪
公开(公告)号：US20110007232A1
公开(公告)日：2011-01-13
申请号：US12499678
申请日：2009-07-08
申请人： Yunfeng Shen , Shan Zhong , Xiumin Liu
发明人： Yunfeng Shen , Shan Zhong , Xiumin Liu
IPC分类号： G02F1/13363 , G02F1/01
CPC分类号： G02F1/0136
摘要： The present disclosure includes a configuration of a polarization control system and an algorithm that realize fast polarization controlling and tracking while avoiding the Glitch problems (i.e., loss of polarization tracking). The polarization controller includes multiple stages along with tunable orientation and retardation angles. The retardation angles are initialized to at least two different values for better polarization tracking in normal mode. In a normal mode, only the orientation angles of the polarization controller are dithered. When the monitored error is higher than the threshold, the polarization controller enters a glitch mode, and Glitch detection can be improved through error signal data processing. In the Glitch mode, at least one retardation angle is dithered along with the orientation angles. After the Glitch problem is avoided, the polarization controller stops dither the retardation angles and move all wave plates back to their initial values, and the polarization controller enters the normal mode.
摘要翻译：本公开内容包括偏振控制系统和实现快速偏振控制和跟踪同时避免毛刺问题（即偏振跟踪损失）的算法的结构。偏振控制器包括多个阶段以及可调取向和相位角。将延迟角初始化为至少两个不同的值，以在正常模式下实现更好的极化跟踪。在正常模式下，仅偏振控制器的取向角被抖动。当监测到的误差高于阈值时，偏振控制器进入毛刺模式，通过误差信号数据处理可以改善毛刺检测。在毛刺模式中，至少一个相位角与取向角一起抖动。在避免毛刺问题后，偏振控制器停止抖动相位角并将所有波片移回其初始值，偏振控制器进入正常模式。

32. 发明授权

US07809272B2 Systems and methods for providing a three-port reconfigurable optical add-drop multiplexer with an improved edge profile and add/drop flexibility 有权
标题翻译：用于提供具有改进的边缘轮廓和加/减灵活性的三端口可重新配置的光分插复用器的系统和方法
公开(公告)号：US07809272B2
公开(公告)日：2010-10-05
申请号：US11834363
申请日：2007-08-06
申请人： Shan Zhong , Jean-Luc Archambault
发明人： Shan Zhong , Jean-Luc Archambault
IPC分类号： H04J14/02
CPC分类号： G02B6/29313 , G02B6/2931 , G02B6/29382 , G02B6/3512 , H04J14/0206 , H04J14/021 , H04J14/0213
摘要： The technology described herein provides a low-cost three-port reconfigurable optical add-drop multiplexer (ROADM) with an improved edge profile and add/drop flexibility. The technology described herein further provides a tunable spectral filter utilizing two sets of gratings and lenses and a two-axis micro-electro-mechanical system (MEMS) mirror with a selectively shaped cut-out disposed within the middle of the collimated optical path.
摘要翻译：本文描述的技术提供了具有改进的边缘轮廓和加/减灵活性的低成本三端口可重新配置的光分插复用器（ROADM）。本文所述的技术还提供了利用两组光栅和透镜的可调谐光谱滤光器以及设置在准直光路中间的选择性成形切口的双轴微机电系统（MEMS）镜。

33. 发明授权

US07697843B2 Modular add/drop multiplexer including a wavelength selective switch 有权
标题翻译：模块化分插复用器包括波长选择开关
公开(公告)号：US07697843B2
公开(公告)日：2010-04-13
申请号：US12234049
申请日：2008-09-19
申请人： Shan Zhong , Charles Haggans
发明人： Shan Zhong , Charles Haggans
IPC分类号： H04J14/02
CPC分类号： H04J14/0204 , H04J14/0205 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0217 , H04J14/0219 , H04J14/028 , H04J14/029 , H04J14/0291
摘要： Consistent with the present invention, tunable demultiplexers are provided in WSS-based add/drop multiplexer. The tunable demultiplexers are modular and thus allow the add/drop multiplexer to be readily expandable, and facilitate flexible add/drop capabilities whereby a channel present on any input line to the WSS can be dropped and supplied to one or more desired outputs of the tunable demultiplexer. Similar flexibility can be achieved on the add-side of the WSS. Moreover, the demultiplexers and the WSS are remotely configurable, thus obviating the need to manually disconnect and connect demultiplexers to a router. In a particular embodiment, multicast switches are provided that permit the same channel, for example, to be provided to one or more outputs of the add/drop multiplexer, such that copy of the channel can carry working traffic while the other copy carries protection traffic. As a result, 1+1 and 1:N optical layer protection can be achieved.
摘要翻译：根据本发明，在基于WSS的分插复用器中提供可调谐解复用器。可调谐解复用器是模块化的，因此允许添加/分出复用器容易地扩展，并且促进灵活的添加/删除功能，从而可以将存在于WSS的任何输入线上的信道丢弃并提供给可调谐器的一个或多个期望的输出解复用器可以在WSS的附加端实现类似的灵活性。此外，解复用器和WSS是可远程配置的，因此不需要手动断开并将解复用器连接到路由器。在特定实施例中，提供允许例如将相同信道提供给分插复用器的一个或多个输出的组播交换机，使得该信道的副本可以承载工作业务，而另一个副本携带保护业务。结果，可以实现1 + 1和1：N光学层保护。

34. 发明授权

US07254327B1 Switching status and performance monitoring technology for wavelength selective switch and optical networks 有权
标题翻译：用于波长选择开关和光网络的开关状态和性能监测技术
公开(公告)号：US07254327B1
公开(公告)日：2007-08-07
申请号：US10768020
申请日：2004-02-02
申请人： Shan Zhong , Vladimir Pelekhaty , Jean-Luc Archambault
发明人： Shan Zhong , Vladimir Pelekhaty , Jean-Luc Archambault
IPC分类号： H04B10/08
CPC分类号： H04Q11/0005 , H04B10/0775 , H04L43/50 , H04Q2011/0009 , H04Q2011/0015 , H04Q2011/0043 , H04Q2011/0083
摘要： A universal in-service monitoring scheme to monitor performances of optical networks, including elements that make up the optical network, is proposed. The elements may be a wavelength selective switch or an optical cross connect. In this scheme, a small tunable probe signal is injected into the optical network via an input of the network. An output signal is received at the output and processed to determine if the probe signal is contained within the output signal. The scheme is such that probe signal injection and detection devices need not be physically co-located. Thus, the scheme is useful to test even optical network that spans thousands of miles. The probe signal is non-interfering with the network traffic so the network can be providing service while its performance is monitored. As examples of the probe signal detection mechanisms include lock-in amplification and coherent detection.
摘要翻译：提出了一种通用的在线监测方案，用于监测光网络的性能，包括构成光网络的元件。元件可以是波长选择开关或光交叉连接。在该方案中，通过网络的输入将小的可调谐探测信号注入光网络。在输出处接收输出信号并进行处理以确定探测信号是否包含在输出信号内。该方案使得探针信号注入和检测装置不需要在物理上位于同一位置。因此，该方案对于测试甚至跨越数千英里的光网络是有用的。探测信号不影响网络流量，因此网络可以在监视其性能的同时提供服务。探测信号检测机制的实例包括锁定放大和相干检测。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式