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1. 发明授权

US07627252B2 Clock recovery from an optical signal with dispersion impairments 有权
标题翻译：从具有色散损伤的光信号中恢复时钟
公开(公告)号：US07627252B2
公开(公告)日：2009-12-01
申请号：US11315342
申请日：2005-12-23
申请人： Han Sun , Slobodan Jovanovic , Kuang Tsan Wu , Chandra Bontu , Kim B Roberts , Jianzhong Xu
发明人： Han Sun , Slobodan Jovanovic , Kuang Tsan Wu , Chandra Bontu , Kim B Roberts , Jianzhong Xu
IPC分类号： H04B10/00
CPC分类号： H04B10/508 , H03L7/085 , H03L2207/06 , H04J14/06 , H04L7/0029 , H04L7/0083 , H04L7/0278
摘要： A method of recovering a clock signal from an optical signal received through an optical communications system. A digital sample stream is processed to generate a dispersion compensated signal. The dispersion compensated signal is then tapped to obtain upper side band and lower side band signals of each received polarization of the optical signal. The upper side band and lower side band signals are then processed to compensate polarization dependent impairments, and the clock recovered from the resulting optimized.
摘要翻译：一种从通过光通信系统接收的光信号中恢复时钟信号的方法。处理数字样本流以产生色散补偿信号。然后对色散补偿信号进行抽头以获得光信号的每个接收极化的上边带和下边带信号。然后处理上边带和下边带信号以补偿偏振相关的损伤，并且从所得优化中恢复时钟。

2. 发明授权

US07532822B2 Clock recovery from an optical signal with polarization impairments 有权
标题翻译：从具有偏振损伤的光信号中恢复时钟
公开(公告)号：US07532822B2
公开(公告)日：2009-05-12
申请号：US11315345
申请日：2005-12-23
申请人： Han Sun , Slobodan Jovanovic , Kuang Tsan Wu , Chandra Bontu , Kim B Roberts , Jianzhong Xu
发明人： Han Sun , Slobodan Jovanovic , Kuang Tsan Wu , Chandra Bontu , Kim B Roberts , Jianzhong Xu
IPC分类号： H04B10/00
CPC分类号： H04B10/508 , H03L7/085 , H03L2207/06 , H04J14/06 , H04L7/0029 , H04L7/0083 , H04L7/0278
摘要： A method of recovering a clock signal from an optical signal received through an optical communications system. A digital sample stream is processed to generate a dispersion compensated signal. The dispersion compensated signal is then tapped to obtain upper side band and lower side band signals of each received polarization of the optical signal. The upper side band sand lower side band signals are then processed to compensate polarization dependent impairments and the clock recovered from the resulting optimized.
摘要翻译：一种从通过光通信系统接收的光信号中恢复时钟信号的方法。处理数字样本流以产生色散补偿信号。然后对色散补偿信号进行抽头以获得光信号的每个接收极化的上边带和下边带信号。然后处理上边带砂下边带信号以补偿偏振相关损伤，并从所得优化中恢复时钟。

3. 发明授权

US07899340B1 Laser control in a coherent optical receiver 有权
标题翻译：相干光接收机中的激光控制
公开(公告)号：US07899340B1
公开(公告)日：2011-03-01
申请号：US11279042
申请日：2006-04-07
申请人： Chandra Bontu , Han Sun , Kim B Roberts , Kuang Tsan Wu
发明人： Chandra Bontu , Han Sun , Kim B Roberts , Kuang Tsan Wu
IPC分类号： H04B10/06 , H04B10/00
CPC分类号： H04L7/0075 , H04B10/60 , H04B10/61 , H04B10/6162 , H04B10/6165 , H04L7/0004
摘要： Methods and systems for compensating a frequency mismatch Δf between a local Oscillator (LO) of a coherent optical receiver and a carrier of a received optical signal. An average frequency of the LO is controlled to compensate at least long-period variations of the frequency mismatch. An electrical carrier recovery circuit for compensating short period variations of the frequency mismatch.
摘要翻译：用于补偿相干光接收机的本地振荡器（LO）和接收到的光信号的载波之间的频率失配和Dgr f的方法和系统。控制LO的平均频率以至少补偿频率失配的长周期变化。一种用于补偿频率不匹配的短周期变化的电载波恢复电路。

4. 发明授权

US07369578B2 Digital processing of SONET pointers 有权
标题翻译： SONET指针的数字处理
公开(公告)号：US07369578B2
公开(公告)日：2008-05-06
申请号：US10609562
申请日：2003-07-01
申请人： Kim B Roberts , James Harley , Philippe Neusy , Michael Mayer
发明人： Kim B Roberts , James Harley , Philippe Neusy , Michael Mayer
IPC分类号： H04J3/06 , H04L7/00
CPC分类号： H04J3/076
摘要： In a method of estimating a bit rate (f1) of a digital signal conveyed through a SONET network between an originating node and a terminating node, the digital signal received by the originating node is processed to determine a result of a first function of the signal bit rate (f1) and a respective Tx local reference frequency (f2) of the originating node. A result of a second function of the Tx local reference frequency (f2) and a respective Rx local reference frequency (f3) of the terminating node is calculated. Finally, a result of a third function of the respective first and second function results is calculated, to derive an estimate of the signal bit rate (f4) relative to the Rx local reference frequency (f3).
摘要翻译：在估计在始发节点和终止节点之间通过SONET网络传送的数字信号的比特率（f 1）的方法中，由始发节点接收的数字信号被处理以确定第一功能的结果信号比特率（f 1）和相应的Tx本地参考频率（f 2）。计算终端节点的Tx本地参考频率（f 2）和相应的Rx本地参考频率（f 3）的第二功能的结果。最后，计算相应的第一和第二功能结果的第三功能的结果，以导出相对于Rx本地参考频率（f 3）的信号比特率（f 4）的估计。

5. 发明授权

US06958995B1 Non-blocking high capacity fine grain switch 有权
标题翻译：无阻塞大容量细粒开关
公开(公告)号：US06958995B1
公开(公告)日：2005-10-25
申请号：US09754041
申请日：2000-12-29
申请人： David M Goodman , Kim B Roberts
发明人： David M Goodman , Kim B Roberts
IPC分类号： H04L12/28 , H04L12/50 , H04L12/56 , H04Q11/00
CPC分类号： H04Q11/0005 , H04L49/15 , H04L49/357 , H04Q2011/0016 , H04Q2011/0075
摘要： A high capacity switch for switching communications traffic. The high capacity switch has a plurality of differing granularity switching levels, each switching level having at least one switch node capable of performing a switching operation at the granularity of the switching level and at least two primary connections, each connecting one of the switching levels to another one of the switching levels. At one of the switching levels, at least one switch node is capable of switching communications traffic along at least one switch connection path established along one of the primary connections, and is also capable of switching communications traffic along at least one secondary connection to another switch node within the same switching level, such that each of the at least one switch connection paths established is filled to a predetermined level.
摘要翻译：用于切换通信流量的高容量交换机。高容量交换机具有多个不同的粒度切换级别，每个交换级别具有能够以切换级别的粒度执行切换操作的至少一个交换节点和至少两个主要连接，每个连接将一个交换级别连接到另一个切换级别。在一个交换级别中，至少一个交换节点能够沿着沿主要连接之一建立的至少一个交换机连接路径来切换通信业务，并且还能够将至少一个辅助连接的通信业务切换到另一个交换机节点，使得所建立的至少一个交换机连接路径中的每一个被填充到预定的水平。

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