公开(公告)号：US07734179B1

公开(公告)日：2010-06-08

申请号：US10639456

申请日：2003-08-13

申请人： Thomas Edward Darcie ,  Bhavesh N. Desai ,  Alan H. Gnauck ,  Xiaolin Lu ,  Sheryl Leigh Woodward

发明人： Thomas Edward Darcie ,  Bhavesh N. Desai ,  Alan H. Gnauck ,  Xiaolin Lu ,  Sheryl Leigh Woodward

IPC分类号： H04J14/00

CPC分类号： H04N7/17309 ,  H04B10/25751 ,  H04N7/22

摘要： A communication system between head-ends and end-users is provided which expands bandwidth and reliability. A concentrator receives communication signals from a head-end and forwards the received communication signals to one or more fiber nodes and/or one or more mini-fiber nodes. The concentrator demultiplexes/splits received signals for the mini-fiber nodes and the fiber nodes and forwards demultiplexed/split signals respectively. The mini-fiber nodes may combine signals received from the head-end with loop-back signals used for local medium access control prior to forwarding the signals to the end-users. Upstream data are received by the mini-fiber nodes and/or fiber node and transmitted to the concentrator. The concentrator multiplexes/couples the mini-fiber node and the fiber node upstream signals and forwards multiplexed/coupled signals to the head-end. Communication signals received from the mini-fiber nodes that are destined to other end-users also connected to the mini-fiber nodes may be routed by the concentrator without head-end interaction.

摘要翻译： 提供头端和终端用户之间的通信系统，可扩展带宽和可靠性。 集中器从头端接收通信信号，并将接收到的通信信号转发到一个或多个光纤节点和/或一个或多个微型光纤节点。 集中器对微型光纤节点和光纤节点进行解复用/分离接收信号，并分别转发分离/分离信号。 在将信号转发给最终用户之前，微型光纤节点可以组合从头端接收的信号和用于本地介质访问控制的环回信号。 上行数据由微型光纤节点和/或光纤节点接收并发送到集中器。 集中器将微纤维节点和光纤节点上行信号复用/耦合，并将多路复用/耦合信号转发到前端。 从迷你光纤节点接收的目的地为也连接到微型光纤节点的其他最终用户的通信信号可以由集线器路由，而无需头端交互。

公开(公告)号：US07068937B1

公开(公告)日：2006-06-27

申请号：US10721864

申请日：2003-11-26

申请人： Charles D. Combs ,  Thomas Edward Darcie ,  Bhavesh N. Desai ,  Alan H. Gnauck ,  Xiaolin Lu ,  Esteban Sandino ,  Oleh J. Sniezko ,  Anthony G. Werner ,  Sheryl Leigh Woodward

发明人： Charles D. Combs ,  Thomas Edward Darcie ,  Bhavesh N. Desai ,  Alan H. Gnauck ,  Xiaolin Lu ,  Esteban Sandino ,  Oleh J. Sniezko ,  Anthony G. Werner ,  Sheryl Leigh Woodward

IPC分类号： H04J14/00

CPC分类号： H04J14/0226 ,  H04B10/25751 ,  H04J14/0227 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0298 ,  H04N7/17309 ,  H04N7/22

摘要： This invention provides a new architecture for a communication system between head-ends and end-users which expands bandwidth and reliability of the communication system. A mux-node receives communication signals from a head-end and forwards the received communication signals to one or more mini-fiber nodes. The connection to the head-end is via a small number of optical fibers and the connections to each of the mini-fiber nodes may be via one or more optical fibers that may provide full duplex communication. The head-end may communicate with the mux-node using digital or digital and analog signals. The mini-fiber nodes may combine the signals received from the head-end with loop-back signals used for local media access control prior to forwarding the signals to the end-users. Upstream data are received by the mini-fiber nodes and transmitted to the mux-node. The mux-node may route upstream communication signals received from the mini-fiber nodes as downstream signals to other mini-fiber nodes also connected to the mux-node without head-end interaction.

摘要翻译： 本发明提供了一种用于头端和终端用户之间的通信系统的新架构，其扩展了通信系统的带宽和可靠性。 多路复用节点从前端接收通信信号，并将接收到的通信信号转发到一个或多个微型光纤节点。 与前端的连接是通过少量光纤，并且到每个微型光纤节点的连接可以经由可提供全双工通信的一个或多个光纤。 前端可以使用数字或数字和模拟信号与多路复用节点进行通信。 在将信号转发给最终用户之前，微型光纤节点可以组合从头端接收的信号和用于本地媒体接入控制的环回信号。 上行数据由微型光纤节点接收并发送到多路复用节点。 多路复用节点可以将从微型光纤节点接收的上行通信信号作为下行信号路由到也连接到多路复用器节点的其他微型光纤节点，而无需前端交互。

公开(公告)号：US06959154B1

公开(公告)日：2005-10-25

申请号：US09722646

申请日：2000-11-28

申请人： Alan H. Gnauck ,  Cedric F. Lam ,  Sheryl L. Woodward

发明人： Alan H. Gnauck ,  Cedric F. Lam ,  Sheryl L. Woodward

IPC分类号： G02B6/00 ,  H04B10/02 ,  H04B10/18 ,  H04B10/00 ,  H04B10/06 ,  H04B10/08 ,  H04B17/00

CPC分类号： H04B10/2507

摘要： Link robustness, chromatic dispersion and polarization mode dispersion (PMD) immunity can be improved in fiber optical system by using a method for receiving an optical double sideband signal over an optical fiber system, comprising the steps of splitting the received optical double sideband signal into an upper sideband signal and a lower sideband signal, photodetecting the upper sideband and the lower sideband, equalizing the photodetected upper sideband signal and the lower sideband signal, and combining the equalized upper sideband signal with the equalized lower sideband signal. While PMD compensation is envisioned as a major application, one may also use the method and system for chromatic dispersion compesation or dispersion slope compensation in high bit rate systems, i.e. using dispersion compensation fiber (DCF) for coarse compensation and diversity receiver with electrical equalizer for fine tuning.

摘要翻译： 通过使用用于在光纤系统上接收光学双边带信号的方法，可以在光纤系统中改善链路鲁棒性，色散和偏振模色散（PMD）抗扰度，包括以下步骤：将接收到的光双边带信号分割为 上侧边带信号和下边带信号，对上边带和下边带进行受光，均衡受光的上边带信号和下边带信号，并将均衡的上边带信号与均衡的下边带信号进行组合。 虽然PMD补偿被设想为主要应用，但也可以在高比特率系统中使用用于色散补偿或色散斜率补偿的方法和系统，即使用用于粗略补偿的色散补偿光纤（DCF）和具有电均衡器的分集接收器 微调。

公开(公告)号：US06856768B2

公开(公告)日：2005-02-15

申请号：US09796729

申请日：2001-03-02

申请人： Alan H. Gnauck ,  Leonard Henri Spiekman ,  Jay M. Wiesenfeld

发明人： Alan H. Gnauck ,  Leonard Henri Spiekman ,  Jay M. Wiesenfeld

IPC分类号： H04B10/155 ,  H04B10/17 ,  H04J14/02 ,  H04B10/00

CPC分类号： H04B10/50 ,  H04B10/2916 ,  H04B10/296 ,  H04J14/0201 ,  H04J14/0221

摘要： A system and method is provided for minimizing power fluctuations and crosstalk in a wavelength division multiplexed optical (WDM) network employing dynamic add/drop techniques by utilizing amplifiers operating in a nearly linear region. Conventionally, erbium-doped fiber amplifiers (EDFAs) are operated in saturation for providing signal amplification in a WDM network. Instead of using saturated EDFAs, the present invention includes optical amplifiers operated in a linear or nearly linear regime for providing signal amplification in a dynamic add/drop or bursty data WDM network. By operating optical amplifiers in a linear or nearly linear regime, power fluctuations, transients and crosstalk caused by adding/dropping or switching channels in the WDM network are minimized. Raman amplifiers, EDFAs, or semiconductor optical amplifiers (SOAs) can all be operated in a linear or nearly linear range to provide linear amplification in such a dynamic add/drop or bursty data WDM network.

摘要翻译： 提供了一种系统和方法，用于通过利用在近似线性区域中操作的放大器来最小化使用动态分插技术的波分复用光（WDM）网络中的功率波动和串扰。 通常，掺铒光纤放大器（EDFA）在饱和状态下工作，以在WDM网络中提供信号放大。 代替使用饱和EDFA，本发明包括以线性或近似线性方式操作的光放大器，用于在动态分插或突发数据WDM网络中提供信号放大。 通过以线性或近似线性的方式操作光放大器，可以最大限度地减少在WDM网络中增加/丢弃或切换通道引起的功率波动，瞬变和串扰。 拉曼放大器，EDFA或半导体光放大器（SOAs）都可以在线性或近似线性范围内运行，以在这样的动态分插或突发数据WDM网络中提供线性放大。

公开(公告)号：USH2075H1

公开(公告)日：2003-08-05

申请号：US09170517

申请日：1998-10-13

申请人： Alan H. Gnauck ,  Adel Abdel Moneim Saleh ,  Sheryl Leigh Woodward

发明人： Alan H. Gnauck ,  Adel Abdel Moneim Saleh ,  Sheryl Leigh Woodward

IPC分类号： H04J1400

摘要： The present invention provides a local access network, having a switching node, a passive remote node connected to an optical network unit, a first optical fiber that provides a dedicated connection between the switching node and the passive remote node, and a second optical fiber that provides a dedicated connection between the switching node and the passive remote node. A first portion of a first fiber-optic cable containing the first optical fiber does not contain any part of the second optical fiber, such that there are independent paths from the switching node to the passive remote node.

公开(公告)号：US6137780A

公开(公告)日：2000-10-24

申请号：US908498

申请日：1997-08-07

申请人： Thomas Edward Darcie ,  Alan H. Gnauck ,  Xiaolin Lu

发明人： Thomas Edward Darcie ,  Alan H. Gnauck ,  Xiaolin Lu

IPC分类号： H04L12/26 ,  G06F11/00 ,  H04B7/212 ,  H04B7/216

CPC分类号： H04L12/2602 ,  H04L43/00 ,  H04L43/0817

摘要： A monitoring apparatus and method are provided for a communication system in which a central office communicates to at least one end unit using intermediate remote nodes. The remote node receives signals from both the central office and the end units. Each remote node can be equipped with apparatus for monitoring the integrity of paths of the communication system. The monitoring apparatus can include a mixing device that mixes received signals to produce combined signals. The received signals generally include a pilot signal sent from the central office and a data signal sent from the at least one end unit. The state of the communication system is analyzed based on the combined signals. If the combined signals includes only the data signal from the end unit, the path through which the pilot signal was sent is inoperative. If the combined signals includes only the pilot signal, the transmission path from the end unit over which the data signal is sent is inoperative. If the combined signals are not received at the central office after transmission of the pilot signal, a determination is made that any part of transmission path could be inoperative.

摘要翻译： 提供了一种用于通信系统的监视装置和方法，其中中心局使用中间远程节点与至少一个终端单元进行通信。 远程节点接收来自中心局和终端单元的信号。 每个远程节点可以配备有用于监视通信系统的路径的完整性的装置。 监视装置可以包括混合装置，其混合接收到的信号以产生组合信号。 所接收的信号通常包括从中心局发送的导频信号和从至少一个终端单元发送的数据信号。 基于组合信号分析通信系统的状态。 如果组合信号仅包括来自端单元的数据信号，则导频信号被发送的路径不起作用。 如果组合信号仅包括导频信号，则从发送数据信号的终端单元的传输路径不起作用。 如果在发送导频信号之后在中心局没有接收到组合信号，则确定传输路径的任何部分可能不起作用。

公开(公告)号：US5559920A

公开(公告)日：1996-09-24

申请号：US396841

申请日：1995-03-01

申请人： Andrew R. Chraplyvy ,  Fabrizio Forghieri ,  Alan H. Gnauck ,  Robert W. Tkach

发明人： Andrew R. Chraplyvy ,  Fabrizio Forghieri ,  Alan H. Gnauck ,  Robert W. Tkach

IPC分类号： G02F1/35 ,  G02B6/02 ,  H04B10/02 ,  H04B10/16 ,  H04B10/17 ,  H04B10/18

CPC分类号： H04B10/25253

摘要： Critical placement and lengths of dispersion-compensating fiber maximize capacity in upgraded in-ground optical fiber communication systems. Higher per-channel bit rates in single-channel systems and in WDM systems are permitted.

摘要翻译： 色散补偿光纤的临界放置和长度最大限度地提高了升级后的地面光纤通信系统的容量。 允许单通道系统和WDM系统中更高的每通道位速率。

公开(公告)号：US5365362A

公开(公告)日：1994-11-15

申请号：US120014

申请日：1993-09-10

申请人： Alan H. Gnauck ,  Christian Kurtzke

发明人： Alan H. Gnauck ,  Christian Kurtzke

IPC分类号： H04B10/02 ,  H04B10/18 ,  H04B10/00

CPC分类号： H04B10/2531 ,  H04B10/2543

摘要： The present invention provides an apparatus and method for achieving bit rate distance products on the order of 200 Tbits/s-km in non-soliton optical communication using optical phase conjugation. The apparatus and method utilize phase conjugation and adjustments of in-line amplifier number, spacing, and/or output power in order to compensate for the interaction between first order dispersion and fiber nonlinearity dispersion effects in an optical fiber span. The present invention provides additional techniques for adjusting system parameters, such as dispersion-length products of first and second portions of the fiber span, in order to compensate for changes in first order dispersion resulting from non-zero second order dispersion. The method and apparatus also provide an improved multi-channel optical phase conjugation system design.

摘要翻译： 本发明提供一种用于在使用光相位共轭的非孤子光通信中实现大约200Tbits / s-km的比特率距离乘积的装置和方法。 该装置和方法利用在线放大器数量，间距和/或输出功率的相位共轭和调整，以补偿光纤跨度中的一阶色散与光纤非线性色散效应之间的相互作用。 本发明提供了用于调整系统参数的附加技术，例如光纤跨度的第一和第二部分的色散长度乘积，以补偿由非零二阶色散导致的一阶色散的变化。 该方法和装置还提供改进的多通道光相位共轭系统设计。

公开(公告)号：US09203682B2

公开(公告)日：2015-12-01

申请号：US12876489

申请日：2010-09-07

申请人： Peter J. Winzer ,  Xiang Liu ,  Chandrasekhar Sethumadhavan ,  Alan H. Gnauck

发明人： Peter J. Winzer ,  Xiang Liu ,  Chandrasekhar Sethumadhavan ,  Alan H. Gnauck

IPC分类号： H04B10/00 ,  H04L27/38 ,  H04B10/60 ,  H04B10/61 ,  H04L27/00

CPC分类号： H04L27/3863 ,  H04B10/60 ,  H04B10/611 ,  H04B10/613 ,  H04L27/0014

摘要： In one embodiment, a coherent optical receiver has a digital signal processor that processes one or more digital I/Q-signal pairs to recover data carried by a modulated optical signal in a manner that mitigates, based on calibration data retrieved from a memory or on appropriate performance measures and feedback mechanisms, the detrimental effects of frequency-dependent imbalances between the I and Q sub-channels of at least one of the I/Q channels of the receiver. In various embodiments, the calibration data can be generated and written into the memory at the fabrication facility or in situ while the receiver is being operated in a calibration mode. Alternatively or in addition, the calibration data can be generated and dynamically adjusted online during normal operation of the receiver.

摘要翻译： 在一个实施例中，相干光接收器具有数字信号处理器，其处理一个或多个数字I / Q信号对以恢复由调制的光信号携带的数据，其方法是基于从存储器或从存储器检索的校准数据减轻 适当的性能测量和反馈机制，接收机的至少一个I / Q信道的I和Q子信道之间频率不平衡的有害影响。 在各种实施例中，在接收器以校准模式操作的同时，校准数据可以在制造设备处或在原位产生并写入存储器。 或者或另外，校准数据可以在接收机的正常操作期间在线生成和动态调整。

公开(公告)号：US20130236175A1

公开(公告)日：2013-09-12

申请号：US13602722

申请日：2012-09-04

申请人： Chandrasekhar Sethumadhavan ,  Xiang Liu ,  Peter J. Winzer ,  Alan H. Gnauck

发明人： Chandrasekhar Sethumadhavan ,  Xiang Liu ,  Peter J. Winzer ,  Alan H. Gnauck

IPC分类号： H04Q11/00

CPC分类号： H04Q11/0003 ,  G02B6/02042 ,  G02B6/26 ,  G02B6/29383 ,  H04J14/00 ,  H04J14/02 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/04

摘要： A space division multiplexed (SDM) transmission system that includes at least two segments of transmission media in which a spatial assignment of the two segments is different is provided. For example, the SDM transmission may include a first segment of transmission media having a first spatial assignment and a second segment of transmission media having a second spatial assignment, wherein the first spatial assignment differs from the second spatial assignment. An example method obtains an optical signal on a first segment of transmission media having a first spatial assignment and forwards the optical signal on a second segment of transmission media with a different spatial assignment. The transmission media may be a multi-core fiber (MCF), a multi-mode fiber (MMF), a few-mode fiber (FMF), or a ribbon cable comprising nominally uncoupled single-mode fiber (SMF).

摘要翻译： 提供了包括两个段的空间分配不同的至少两个传输介质段的空分复用（SDM）传输系统。 例如，SDM传输可以包括具有第一空间分配的传输介质的第一段和具有第二空间分配的传输介质的第二段，其中第一空间分配与第二空间分配不同。 示例性方法在具有第一空间分配的传输介质的第一段上获得光信号，并且在具有不同空间分配的第二传输介质段上转发光信号。 传输介质可以是多芯光纤（MCF），多模光纤（MMF），多模光纤（FMF）或包括名义上脱耦单模光纤（SMF）的带状电缆）。