公开(公告)号：US09130681B2

公开(公告)日：2015-09-08

申请号：US13851574

申请日：2013-03-27

申请人： Han H. Sun ,  John D. McNicol ,  Kuang-Tsan Wu

发明人： Han H. Sun ,  John D. McNicol ,  Kuang-Tsan Wu

IPC分类号： H04B10/50 ,  H04J14/02 ,  H04B10/61 ,  H04B10/58

CPC分类号： H04B10/6165 ,  H04B10/506 ,  H04B10/58 ,  H04J14/02

摘要： An optical transmitter may include an optical source to provide a first optical signal having a varying frequency; an optical circuit to receive a portion of the first optical signal and provide a second optical signal corresponding to a change in frequency of the first optical signal; a photodetector to receive the first optical signal and provide an electrical signal that is indicative of the change in frequency of the first optical signal; an integrator to receive the electrical signal and provide an inverted electrical signal; and a controller to process the inverted electrical signal and provide a current, associated with the inverted electrical signal, to the optical source. The optical source may reduce the phase noise associated with the first optical signal based on the current.

摘要翻译： 光发射机可以包括光源以提供具有变化频率的第一光信号; 光电路，用于接收所述第一光信号的一部分，并提供对应于所述第一光信号的频率变化的第二光信号; 光电检测器，用于接收第一光信号并提供指示第一光信号的频率变化的电信号; 积分器，用于接收电信号并提供反相电信号; 以及控制器，用于处理所述反相电信号并将与所述反相电信号相关联的电流提供给所述光源。 光源可以基于电流减小与第一光信号相关联的相位噪声。

公开(公告)号：US08639118B2

公开(公告)日：2014-01-28

申请号：US12897787

申请日：2010-10-05

申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/616 ,  H04J14/0224 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/026 ,  H04J14/0279 ,  H04J14/06 ,  H04L1/0007 ,  H04L1/0009 ,  H04L5/0008 ,  H04L25/03834 ,  H04L27/0008 ,  H04L27/2035 ,  H04L27/223 ,  H04L27/34

摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。

公开(公告)号：US20120082466A1

公开(公告)日：2012-04-05

申请号：US12897786

申请日：2010-10-05

申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

IPC分类号： H04B10/04

CPC分类号： H04B10/516 ,  H04B10/2575

摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。

公开(公告)号：US20120082453A1

公开(公告)日：2012-04-05

申请号：US12897784

申请日：2010-10-05

申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

IPC分类号： H04J14/00

CPC分类号： H04J14/06 ,  H04J14/026 ,  H04L1/007

摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。

公开(公告)号：US20110291865A1

公开(公告)日：2011-12-01

申请号：US12791694

申请日：2010-06-01

申请人： Han Henry Sun ,  Kuang-Tsan Wu ,  Yuejian Wu ,  Sandy Thomson ,  John D. McNicol ,  David J. Krause

发明人： Han Henry Sun ,  Kuang-Tsan Wu ,  Yuejian Wu ,  Sandy Thomson ,  John D. McNicol ,  David J. Krause

IPC分类号： H03M7/00

CPC分类号： H03H17/0621 ,  H03H17/0685 ,  H03H2017/0298

摘要： A system, method, and apparatus is disclosed for interpolation of an output of an analog to digital converter (ADC) to enable operation of the ADC at a sampling rate that is independent of the sampling rate for a DSP core so as to efficiently enable operation at higher date rates. According to one of the embodiments, an interpolation circuit is coupled between the ADC and DSP core and receives a first plurality of samples of data at the first data rate from the ADC and supplies a plurality of samples of second data at a second data rate to the DSP core; the second data rate being less than the first data rate. According to one of the embodiments, the interpolation circuit includes a memory and a FIR filter circuit having filter tap coefficient values selected to provide attenuation at high frequencies to reduce aliasing noise.

摘要翻译： 公开了一种用于对模数转换器（ADC）的输出进行插值的系统，方法和装置，以使得能够以独立于DSP核的采样率的采样速率对ADC进行操作，以便有效地使能操作 以较高的日期率。 根据实施例之一，内插电路耦合在ADC和DSP内核之间，并从ADC接收第一数据速率的第一多个数据采样，并将第二数据的多个样本以第二数据速率提供给 DSP内核; 第二数据速率小于第一数据速率。 根据实施例中的一个，内插电路包括存储器和具有滤波器抽头系数值的FIR滤波器电路，该滤波器抽头系数值被选择以在高频率下提供衰减以减少混叠噪声。

公开(公告)号：US06119008A

公开(公告)日：2000-09-12

申请号：US961198

申请日：1997-10-30

申请人： David P. Weeks ,  John D. McNicol ,  Jie Lin ,  Keith Russell Edwards ,  Richard Driscoll

发明人： David P. Weeks ,  John D. McNicol ,  Jie Lin ,  Keith Russell Edwards ,  Richard Driscoll

IPC分类号： H04Q11/04 ,  H04W84/14 ,  H04Q7/28

CPC分类号： H04W84/14 ,  H04Q11/0471 ,  H04Q2213/13034 ,  H04Q2213/13098 ,  H04Q2213/13174 ,  H04Q2213/13176 ,  H04Q2213/13202 ,  H04Q2213/13209 ,  H04Q2213/13292 ,  H04Q2213/13294 ,  H04Q2213/13298 ,  H04Q2213/13299

摘要： A radio access system comprises a base station and a plurality of subscriber locations. The subscriber locations each comprise a residential base unit or subscriber interface which includes line termination equipment. A group of subscribers is served by a pool of residential radio transceiver units in radio communication with the base station which is connected to the residential base units by a shared bus. A group of subscriber locations may be served by a lesser number of residential transceiver units, while at the same time providing individual locations with access to increased bandwidth for ISDN services and the like. Also described is a system in which a subscriber's base unit is connected to two or more residential transceiver units to allow increased bandwidth without requiring additional residential base units.

摘要翻译： 无线电接入系统包括基站和多个用户位置。 用户位置各自包括住宅基站单元或用户接口，其包括线路终端设备。 一组用户由与通过共享总线连接到住宅基地单元的基站进行无线电通信的住宅无线电收发单元池供电。 一组用户位置可以由较少数量的住宅收发器单元服务，同时为各个位置提供对ISDN服务等的增加的带宽的访问。 还描述了一种系统，其中用户的基本单元连接到两个或更多个住宅收发器单元，以允许增加的带宽而不需要额外的住宅基本单元。

公开(公告)号：US20140328584A1

公开(公告)日：2014-11-06

申请号：US13851574

申请日：2013-03-27

申请人： Han H. Sun ,  John D. McNicol ,  Kuang-Tsan Wu

发明人： Han H. Sun ,  John D. McNicol ,  Kuang-Tsan Wu

IPC分类号： H04B10/61 ,  H04J14/02 ,  H04B10/079 ,  H04B10/58

CPC分类号： H04B10/6165 ,  H04B10/506 ,  H04B10/58 ,  H04J14/02

摘要： An optical transmitter may include an optical source to provide a first optical signal having a varying frequency; an optical circuit to receive a portion of the first optical signal and provide a second optical signal corresponding to a change in frequency of the first optical signal; a photodetector to receive the first optical signal and provide an electrical signal that is indicative of the change in frequency of the first optical signal; an integrator to receive the electrical signal and provide an inverted electrical signal; and a controller to process the inverted electrical signal and provide a current, associated with the inverted electrical signal, to the optical source. The optical source may reduce the phase noise associated with the first optical signal based on the current.

摘要翻译： 光发射机可以包括光源以提供具有变化频率的第一光信号; 光电路，用于接收所述第一光信号的一部分，并提供对应于所述第一光信号的频率变化的第二光信号; 光电检测器，用于接收第一光信号并提供指示第一光信号的频率变化的电信号; 积分器，用于接收电信号并提供反相电信号; 以及控制器，用于处理所述反相电信号并将与所述反相电信号相关联的电流提供给所述光源。 光源可以基于电流减小与第一光信号相关联的相位噪声。

公开(公告)号：US08768177B2

公开(公告)日：2014-07-01

申请号：US12897784

申请日：2010-10-05

申请人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

发明人： Kuang-Tsan Wu ,  John D. McNicol ,  David F. Welch ,  Stephen G. Grubb ,  Pierre Mertz

IPC分类号： H04B10/58

CPC分类号： H04J14/06 ,  H04J14/026 ,  H04L1/007

摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit nodes of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data. The modulated light is then transmitted over an optical communication path to a receive node. At the receive node, the modulated optical signal, as well as other modulated optical signals are supplied to a photodetector circuit, which receives additional light at one of the optical signal wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of individual channels is unnecessary.

摘要翻译： 与本公开一致，数字形式的数据由光通信的发射节点接收，并由数模转换器（DAC）转换为模拟信号以驱动调制器。 调制器又根据接收的数据调制多个波长中的一个波长的光。 然后将调制的光通过光通信路径传输到接收节点。 在接收节点处，调制的光信号以及其它调制的光信号被提供给光电检测器电路，光电检测器电路从本地振荡器激光器接收来自光信号波长之一的附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对来自ADC的输出进行滤波，使得各个信道的光解复用是不必要的。

公开(公告)号：US20120251119A1

公开(公告)日：2012-10-04

申请号：US13078888

申请日：2011-04-01

申请人： John D. McNicol ,  Matthew L. Mitchell ,  David F. Welch

发明人： John D. McNicol ,  Matthew L. Mitchell ,  David F. Welch

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04J14/0256 ,  H04J14/026 ,  H04J14/06

摘要： Consistent with the present disclosure, data, in digital form, is received by a transmit node of an optical communication, and converted to analog signal by a digital-to-analog converter (DAC) to drive a modulator. The modulator, in turn, modulates light at one of a plurality of wavelengths in accordance with the received data forming a plurality of corresponding carriers. The plurality of carriers are then optically combined with a fixed spacing combiner to form a superchannel of a fixed capacity. Accordingly, the number of carriers are selected according to a modulation format and symbol rate to realize the fixed capacity, for example. The superchannel is then transmitted over an optical communication path to a receive node. At the receive node, the superchannel is optically demultiplexed from a plurality of other superchannels. The plurality of carriers are then supplied to a photodetector circuit, which receives additional light at one of the optical signal carrier wavelengths from a local oscillator laser. An analog-to-digital converter (ADC) is provided in the receive node to convert the electrical signals output from the photodetector into digital form. The output from the ADC is then filtered in the electrical domain, such that optical demultiplexing of the carriers is unnecessary.

摘要翻译： 根据本公开，数字形式的数据由光通信的发送节点接收，并由数模转换器（DAC）转换成模拟信号以驱动调制器。 调制器又根据形成多个相应载波的接收数据调制多个波长中的一个波长的光。 然后将多个载波与固定间隔组合器光学组合以形成固定容量的超级通道。 因此，例如，根据调制格式和符号率来选择载波的数量以实现固定容量。 然后，超信道通过光通信路径传输到接收节点。 在接收节点处，超级信道从多个其他超级信道被光解复用。 然后将多个载波提供给光电检测器电路，该电路从本地振荡器激光器接收来自光信号载波波长的其中一个附加光。 在接收节点中提供模数转换器（ADC），以将从光电检测器输出的电信号转换为数字形式。 然后在电域中对ADC的输出进行滤波，使得载波的光解复用是不必要的。

公开(公告)号：US20120251118A1

公开(公告)日：2012-10-04

申请号：US13078157

申请日：2011-04-01

申请人： John D. McNicol

发明人： John D. McNicol

IPC分类号： H04J14/02

CPC分类号： H04J14/06 ,  H04B10/61 ,  H04J14/02

摘要： Consistent with the present disclosure, a coherent detector is provided that includes an optical hybrid that supplies optical signals including local oscillator light to a balanced detector. The amount of imbalance or “balance error” in the balanced detector is identified by comparing an output of the balanced detector and an output of a photodiode that receives a portion of an input optical signal provided to the optical hybrid. Based on the balance error, electrical signals generated by the balanced detector or the power of optical signals passing through (or output from) the optical hybrid circuit can be adjusted so that the balance error is minimized or reduced to zero. As a result, imbalance associated with the balanced detector is corrected so that unwanted currents and/or related electrical signals are cancelled out or substantially cancelled out. Such unwanted currents and/or related electrical signals are generated in response to noise in the local oscillator light as well as intensity noise associated with non-selected optical signals in a superchannel.

摘要翻译： 根据本公开，提供了一种相干检测器，其包括将包括本地振荡器光的光学信号提供给平衡检测器的光学混合器。 通过比较平衡检测器的输出和接收提供给光混合器的输入光信号的一部分的光电二极管的输出来识别平衡检测器中的不平衡或平衡误差的量。 基于平衡误差，可以调节由平衡检测器产生的电信号或通过光混合电路（或从光混合电路输出）的光信号的功率，使得平衡误差最小化或减小到零。 结果，校正与平衡检测器相关的不平衡，使得不需要的电流和/或相关的电信号被抵消或基本上被抵消。 响应于本地振荡器光中的噪声以及与超声道中的未选择的光信号相关联的强度噪声而产生这种不需要的电流和/或相关的电信号。