公开(公告)号：US07127181B2

公开(公告)日：2006-10-24

申请号：US11197699

申请日：2005-08-04

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： 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 compensation 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，但是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，即使用用于粗调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：US06654563B1

公开(公告)日：2003-11-25

申请号：US09460770

申请日：1999-12-14

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： H04J1408

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：US06509993B1

公开(公告)日：2003-01-21

申请号：US09398874

申请日：1999-09-20

申请人： Alan H. Gnauck ,  Sang-Gyu Park ,  Jay Wiesenfeld

发明人： Alan H. Gnauck ,  Sang-Gyu Park ,  Jay Wiesenfeld

IPC分类号： H04B1000

CPC分类号： H04B10/25253

摘要： An optical transmission system and method uses large-bandwidth optical signals that rapidly disperse in a transmission medium, such as an optical fiber, to reduce the effects of non-linearities in the transmission medium on the optical signal. The frequency bandwidth of the optical signals can be widened by chirping the optical signals, although other methods are possible. Optical signals in adjacent channels, such as in wavelength division multiplexing, can overlap to some extent without significant effect on the transmitted signal quality. Optical filtering at the receiver can extract partially overlapping signals as well as compensate for residual dispersion and/or dispersion slope in the transmission system.

摘要翻译： 光传输系统和方法使用快速分散在诸如光纤的传输介质中的大带宽光信号，以减少传输介质中的非线性对光信号的影响。 虽然其他方法是可能的，但通过啁啾光信号可以扩大光信号的频率带宽。 相邻信道中的光信号，例如在波分复用中，可以在一定程度上重叠，而对发射的信号质量没有显着影响。 在接收机处的光学滤波可以提取部分重叠的信号，并且补偿传输系统中的残余色散和/或色散斜率。

公开(公告)号：US06493335B1

公开(公告)日：2002-12-10

申请号：US08718853

申请日：1996-09-24

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

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

IPC分类号： H04B7208

CPC分类号： H04L12/2801 ,  H04L12/403 ,  H04L12/413

摘要： A communication network uses intermediate nodes to resolve local traffic contention. Intermediate nodes receive upstream signals from end users, derive traffic information signals from the upstream signals, and transmit the traffic information signals to end users. By listening to the traffic information signals from the intermediate node, the end users know whether the upstream transmission channels are idle or busy, or whether a collision has occurred. The intermediate nodes derive and transmit the traffic information signals with or without the assistance of the central office or head end.

摘要翻译： 通信网络使用中间节点来解决本地流量争用。 中间节点从终端用户接收上行信号，从上游信号中导出交通信息信号，并向最终用户发送交通信息信号。 通过监听来自中间节点的交通信息信号，终端用户知道上行传输信道是空闲还是忙碌，还是发生了冲突。 中间节点在有或没有中心局或头端的帮助下导出和传送交通信息信号。

公开(公告)号：US5963570A

公开(公告)日：1999-10-05

申请号：US854315

申请日：1997-05-12

申请人： Alan H. Gnauck ,  Sheryl Leigh Woodward

发明人： Alan H. Gnauck ,  Sheryl Leigh Woodward

IPC分类号： H04B10/04 ,  H01S5/068 ,  H01S5/0683 ,  H04B10/06 ,  H04B10/14 ,  H04B10/155 ,  H04B10/18 ,  H01S3/10

CPC分类号： H04B10/504 ,  H01S5/0683 ,  H04B10/564

摘要： A control circuit for an injection laser provides a pre-bias current which prevents clipping induced errors in the laser output. An analog modulating signal is provided directly to the laser which receives the sum of a feedback current (Ifb) and a current source (Io) as the pre-bias current (Ipb). A monitor diode detects the laser light output and provides a current (Idet). A feedback circuit operates in a limited dynamic range, e.g. I.sub.l +/-40 mA or is incapable of outputting a negative current (Ifb>0). The feedback circuit responds to changes in Idet and adjusts the laser pre-bias current to hold Idet equal to a preset value, which effectively holds the laser's average output power constant. If the pre-bias current necessary to hold Idet fixed falls below some minimum level, Imin, the feedback circuit will run out of dynamic range and the laser's average power will increase. By preventing Ipb from falling below Imin clipping induced errors and distortion are avoided.

摘要翻译： 用于注射激光器的控制电路提供预偏置电流，防止激光输出中的削波感应误差。 模拟调制信号被直接提供给接收反馈电流（Ifb）和电流源（Io）之和作为预偏置电流（Ipb）的激光器。 监视二极管检测激光输出并提供电流（Idet）。 反馈电路在有限的动态范围内工作，例如， Il +/- 40 mA或不能输出负电流（Ifb> 0）。 反馈电路响应Idet中的变化，并调整激光预偏置电流以保持Idet等于预设值，有效保持激光器的平均输出功率恒定。 如果保持Idet固定所需的预偏置电流低于某个最小电平，Imin，反馈电路将耗尽动态范围，激光器的平均功率将增加。 通过防止Ipb低于Imin，可以避免导致的错误和失真。

公开(公告)号：US5959658A

公开(公告)日：1999-09-28

申请号：US747708

申请日：1996-11-12

申请人： Alan H. Gnauck ,  Xiaolin Lu ,  Kenneth C. Reichmann ,  Sheryl Leigh Woodward

发明人： Alan H. Gnauck ,  Xiaolin Lu ,  Kenneth C. Reichmann ,  Sheryl Leigh Woodward

IPC分类号： H04B10/00 ,  H04J14/00 ,  H04J14/02 ,  H04N7/16 ,  H04N7/173 ,  H04N7/22 ,  H04N21/61 ,  H04N21/6338 ,  H04N7/10

CPC分类号： H04N7/22 ,  H04N7/17309

摘要： A communication network and method is provided to communicate between a central office/head end and a plurality of end-units (EUs). A first transmission medium is connected between the central office and an intermediate node. A plurality of second transmission mediums are connected between the central office and a plurality of mini-fiber nodes. The intermediate node is also associated with each of the mini-fiber nodes such that an analog broadcast service may be sent over the first transmission medium to each of the mini-fiber nodes. Further, switched digital services and digital broadcast services are also sent over the second transmission mediums to each of the mini-fiber nodes. The mini-fiber nodes combine the signals and send the combined signals to a corresponding subset of EUs.

摘要翻译： 提供通信网络和方法以在中心局/头端与多个终端单元（EU）之间进行通信。 第一传输介质连接在中心局和中间节点之间。 多个第二传输介质连接在中心局和多个微型光纤节点之间。 中间节点还与每个微型光纤节点相关联，使得模拟广播服务可以通过第一传输介质发送到每个微型光纤节点。 此外，交换数字业务和数字广播服务也通过第二传输介质发送到每个微型光纤节点。 微型光纤节点组合信号并将组合的信号发送到EU的相应子集。

公开(公告)号：US5864672A

公开(公告)日：1999-01-26

申请号：US916023

申请日：1997-08-21

申请人： George E. Bodeep ,  Thomas Edward Darcie ,  Alan H. Gnauck ,  Xiaolin Lu ,  Sheryl Leigh Woodward

发明人： George E. Bodeep ,  Thomas Edward Darcie ,  Alan H. Gnauck ,  Xiaolin Lu ,  Sheryl Leigh Woodward

IPC分类号： H04J14/00 ,  H04B10/20 ,  H04J1/00 ,  H04J14/02 ,  H04N7/173 ,  G06F15/16

CPC分类号： H04N7/17309

摘要： A converter apparatus (Mini Fiber Node MFN) for use in a communication network (e.g., a coax network) includes a signal distribution unit (e.g., fiber node FN) for transmitting frequency-division multiplexed communication signals downstream over a coax cable to a node apparatus (amplifier) and via an access path to a plurality of end unit apparatuses connected thereto. The converter apparatus connects to the access path and receives downstream second FDM signals directly from the central office over an optical communication path and sends the second FDM signals to at least one end unit apparatus over the access path. The converter apparatus also receives upstream FDM signals from the at least one end unit apparatus over the access path and transmits the upstream FDM signals to the central office over the optical path. In another embodiment, the converter apparatus connects directly to the primary path to provide service to an end user apparatus connected in a "tapped-bus" arrangement.

摘要翻译： 用于通信网络（例如，同轴电缆网络）中的A转换器装置（小型光纤节点MFN）包括用于通过同轴电缆将下行的频分复用通信信号发送到节点的信号分配单元（例如，光纤节点FN） 装置（放大器），并且经由与连接到其的多个终端单元装置的访问路径。 转换器装置连接到接入路径，并通过光通信路径直接从中心局接收下游第二FDM信号，并通过接入路径将第二FDM信号发送到至少一个终端单元设备。 转换器装置还通过接入路径从至少一个终端单元装置接收上行FDM信号，并通过光路将上行FDM信号发送到中心局。 在另一个实施例中，转换器装置直接连接到主路径，以向以“抽头总线”排列连接的最终用户装置提供服务。

公开(公告)号：US5625722A

公开(公告)日：1997-04-29

申请号：US360893

申请日：1994-12-21

申请人： Nan M. Froberg ,  Alan H. Gnauck ,  Gregory Raybon ,  John J. Veselka

发明人： Nan M. Froberg ,  Alan H. Gnauck ,  Gregory Raybon ,  John J. Veselka

IPC分类号： G02F1/03 ,  H03M5/04 ,  H04B10/155 ,  H04J14/08 ,  G02B6/10

CPC分类号： H04B10/508 ,  H04B10/505

摘要： A method and apparatus for converting a non-return-to-zero (NRZ) voltage data stream into an optical data stream in return-to-zero (RZ) format, is disclosed comprising supplying a continuous optical signal to a modulator, driving the modulator with an NRZ voltage data stream and encoding either the NRZ data stream or the electrical output of the receiver. The modulator can be an interferometer, such as a Mach-Zehnder interferometer, or a directional coupler, for example.

摘要翻译： 公开了一种用于将非归零（NRZ）电压数据流转换成归零（RZ）格式的光数据流的方法和装置，包括向调制器提供连续光信号，驱动 调制器与NRZ电压数据流并且编码NRZ数据流或接收机的电输出。 调制器可以是干涉仪，例如Mach-Zehnder干涉仪或定向耦合器。

公开(公告)号：US20160072588A1

公开(公告)日：2016-03-10

申请号：US14844942

申请日：2015-09-03

申请人： Vincent E. Houtsma ,  Doutje T. Van Veen ,  Alan H. Gnauck ,  Patrick Iannone

发明人： Vincent E. Houtsma ,  Doutje T. Van Veen ,  Alan H. Gnauck ,  Patrick Iannone

IPC分类号： H04B10/564 ,  H04B10/27 ,  H04L25/08 ,  H04Q11/00

CPC分类号： H04L25/085 ,  H04B10/2507 ,  H04B10/516 ,  H04J14/0282 ,  H04L25/0272 ,  H04L25/0292

摘要： A method and apparatus for processing a communication signal in an optical network. A network node typically includes a transmit train for generating transmissions and a receive train for receiving transmissions from another network node. The network node may be, for example, an OLT or an ONU. In a receiver implementing the described solution, a photodiode is employed to convert received optical signals into electrical signals that are then provided to a TIA or other device for producing a differential output having an inverted output and a non-inverted output. One of the outputs is delayed one bit and attenuated, then combined with the other output to produce an equalized signal for further processing by the receive train. The solution may be analogously applied on the transmit side for introducing pre-distortion, either in addition to or in lieu of in the receiver.

摘要翻译： 一种用于处理光网络中的通信信号的方法和装置。 网络节点通常包括用于生成传输的传输列，以及用于从另一网络节点接收传输的接收列。 网络节点可以是例如OLT或ONU。 在实现所述解决方案的接收机中，采用光电二极管将接收到的光信号转换成电信号，然后将其提供给TIA或其他设备，以产生具有反相输出和非反相输出的差分输出。 其中一个输出被延迟一位并衰减，然后与另一个输出相结合，以产生均衡信号，以便接收列进一步处理。 该解决方案可以类似地应用于发射侧，用于引入预失真，或者在接收机中或代替接收机中。

公开(公告)号：US07831147B2

公开(公告)日：2010-11-09

申请号：US12268441

申请日：2008-11-10

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.