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1. 发明授权

US09680567B2 Fault localization and fiber security in optical transponders 有权
公开(公告)号：US09680567B2
公开(公告)日：2017-06-13
申请号：US13410896
申请日：2012-03-02
申请人： Eric A. Swanson , Graeme Pendock
发明人： Eric A. Swanson , Graeme Pendock
IPC分类号： H04B10/07
CPC分类号： H04B10/0705
摘要： Designs, methods, and applications for fault localization and fiber security in optical transponders is described. In one embodiment a two-way time transfer protocol or other suitable method for synchronizing clocks between distant transponders is used. The clock synchronized transponders have digital signal processing to continually detect high precision time-histories of physical layer attributes in the transmission between the two transponders. Physical layer attributes can include: state-of-polarization changes, changes in polarization-mode-dispersion, change in propagation delay, changes or loss-of-light, changes in OSNR, changes in BER between the two nodes. By recording these physical layer changes and time-stamping them information on the magnitude and estimated location of the changes can be inferred by from the time records. In one aspect the method may be used in a distributed optical sensor for monitoring trespassing events that are a risk to fiber security of an optical transmission link.

2. 发明申请

US20120224846A1 Fault Localization and Fiber Security in Optical Transponders 有权
标题翻译：光转发器中的故障定位和光纤安全
公开(公告)号：US20120224846A1
公开(公告)日：2012-09-06
申请号：US13410896
申请日：2012-03-02
申请人： Eric A. Swanson , Graeme Pendock
发明人： Eric A. Swanson , Graeme Pendock
IPC分类号： H04B10/08
CPC分类号： H04B10/0705
摘要： Designs, methods, and applications for fault localization and fiber security in optical transponders is described. In one embodiment a two-way time transfer protocol or other suitable method for synchronizing clocks between distant transponders is used. The clock synchronized transponders have digital signal processing to continually detect high precision time-histories of physical layer attributes in the transmission between the two transponders. Physical layer attributes can include: state-of-polarization changes, changes in polarization-mode-dispersion, change in propagation delay, changes or loss-of-light, changes in OSNR, changes in BER between the two nodes. By recording these physical layer changes and time-stamping them information on the magnitude and estimated location of the changes can be inferred by from the time records. In one aspect the method may be used in a distributed optical sensor for monitoring trespassing events that are a risk to fiber security of an optical transmission link.
摘要翻译：描述了光转发器中故障定位和光纤安全性的设计，方法和应用。在一个实施例中，使用双向时间传送协议或用于在远程应答器之间同步时钟的其他合适方法。时钟同步转发器具有数字信号处理，以在两个应答器之间的传输中连续检测物理层属性的高精度时间历史。物理层属性可以包括：极化状态变化，偏振模色散的变化，传播延迟的变化，变化或光损耗，OSNR的变化，两个节点之间的BER的变化。通过记录这些物理层变化和时间戳，它们可以从时间记录推断出关于变化的幅度和估计位置的信息。在一个方面，该方法可以用于分布式光学传感器中，用于监视对于光传输链路的光纤安全性的风险的入侵事件。

3. 发明申请

US20120230676A1 TURN-UP AND LONG TERM OPERATION OF ADAPTIVE EQUALIZER IN OPTICAL TRANSMISSION SYSTEMS 审中-公开
标题翻译：光传输系统中自适应均衡器的长期和长期操作
公开(公告)号：US20120230676A1
公开(公告)日：2012-09-13
申请号：US13413873
申请日：2012-03-07
申请人： Fan Mo , Sameep Dave , Christian Rasmussen , Mehmet Aydinlik , Graeme Pendock
发明人： Fan Mo , Sameep Dave , Christian Rasmussen , Mehmet Aydinlik , Graeme Pendock
IPC分类号： H04J14/06 , H04B10/08
CPC分类号： H04J14/06 , H04B10/614 , H04B10/6166
摘要： In an optical transmission system which utilizes polarization multiplexing, a receiver includes an adaptive equalizer which is adjusted at turn-up such that two polarization modes at the equalizer output are time aligned. The adaptive equalizer may be reset in a directed manner in response to an indication that one polarization mode is present at both the first and second outputs. Further, the dominant filters taps of the adaptive equalizer are maintained near a middle of a tap index range. The receiver may also include an interpolation function upstream of the adaptive equalizer and a symbol timing error estimation function that feeds a control signal back to the interpolation function, wherein the interpolation function causes the adaptive equalizer function and symbol timing error estimation function to receive an integer number of samples per symbol.
摘要翻译：在利用偏振复用的光传输系统中，接收机包括一个自适应均衡器，该自适应均衡器在上电时被调整，使得均衡器输出处的两个偏振模式被时间对准。响应于在第一和第二输出处存在一个偏振模式的指示，自适应均衡器可以以有向的方式被复位。此外，自适应均衡器的主要滤波器抽头保持在分接索引范围的中间附近。接收机还可以包括自适应均衡器上游的内插函数和将控制信号反馈给内插函数的符号定时误差估计函数，其中插值函数使得自适应均衡器函数和符号定时误差估计函数接收整数每个符号的样本数。

4. 发明授权

US06529315B2 Optical amplifier providing dispersion compensation 有权
公开(公告)号：US06529315B2
公开(公告)日：2003-03-04
申请号：US09844875
申请日：2001-04-27
申请人： Glenn Bartolini , Graeme Pendock , John Zyskind
发明人： Glenn Bartolini , Graeme Pendock , John Zyskind
IPC分类号： H01S300
CPC分类号： H01S3/06758 , H01S3/10023 , H01S3/302 , H01S2301/02 , H01S2301/04
摘要： A dispersion-compensating fiber amplifier having a Raman pumped dispersion-compensating fiber and a distributed optical amplifier. The dispersion-compensating fiber is pumped such that the noise contribution of the dispersion-compensating fiber is reduced.

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