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1. 发明授权

US07680420B1 Optical E-field modulation using a directly driven laser 有权
标题翻译：使用直接驱动激光的光学电场调制
公开(公告)号：US07680420B1
公开(公告)日：2010-03-16
申请号：US10872850
申请日：2004-06-21
申请人： Dave Walker , Kim B. Roberts , Maurice O'Sullivan , Leo Strawczynski , James Whiteaway , Christopher Fludger , Han Henry Sun , Adrien Comeau
发明人： Dave Walker , Kim B. Roberts , Maurice O'Sullivan , Leo Strawczynski , James Whiteaway , Christopher Fludger , Han Henry Sun , Adrien Comeau
IPC分类号： H04B10/00
CPC分类号： H04B10/5051 , H04B10/25137
摘要： A method of synthesizing a modulated optical signal using a laser cascaded with an amplitude modulator. A phase drive signal VF(t) is derived for driving the laser to generate an optical carrier signal with a desired phase φ(t). An amplitude drive signal VS(t) is then derived for driving the amplitude modulator to impose a desired amplitude S(t) onto the optical carrier signal generated by the laser. The amplitude drive signal VS(t) is compensated for amplitude modulation of the optical carrier signal generated by the laser.
摘要翻译：使用与幅度调制器级联的激光来合成调制光信号的方法。导出相位驱动信号VF（t），用于驱动激光器以产生具有期望相位（t）的光载波信号。然后导出幅度驱动信号VS（t），用于驱动幅度调制器，以将期望的振幅S（t）施加到由激光器产生的光载波信号上。振幅驱动信号VS（t）被补偿由激光器产生的光载波信号的幅度调制。

2. 发明授权

US07382985B2 Electrical domain mitigation of polarization dependent effects in an optical communications system 有权
标题翻译：光通信系统中电场减轻偏振相关效应
公开(公告)号：US07382985B2
公开(公告)日：2008-06-03
申请号：US10307466
申请日：2002-12-02
申请人： Kim B. Roberts , Leo Strawczynski , Adrien Comeau , John McNicol , Maurice O'Sullivan , Kieran Parsons
发明人： Kim B. Roberts , Leo Strawczynski , Adrien Comeau , John McNicol , Maurice O'Sullivan , Kieran Parsons
IPC分类号： H04B10/00 , H04B10/12 , H04B10/04
CPC分类号： H04B10/25137 , H04B10/2572
摘要： Polarization Dependent Effects (PDEs), including Polarization Mode Dispersion (PMD) and Polarization Dependent Loss (PDL) imposed on optical signals conveyed through an optical link are compensated by processing an input signal in the electrical domain prior to transmission. A compensation function is derived that at least partially compensates the PDEs. The communications signal is then processed in the electrical domain using the compensation function to generate an electrical predistorted signal. The electrical predistorted signal is then used to modulate an optical source to generate a corresponding predistorted optical signal for transmission through the optical link. The PDEs of the optical link operate of the predistorted optical signal such at that substantially undistorted optical signal is received at a receiving end of the link.
摘要翻译：通过在传输之前处理电域中的输入信号，来补偿施加在通过光链路传送的光信号上的极化相关效应（PDE），包括极化模式色散（PMD）和极化相关损耗（PDL）。导出补偿功能，至少部分补偿PDE。然后使用补偿功能在电域中处理通信信号以产生电预失真信号。然后，电预失真信号用于调制光源以产生用于通过光链路传输的相应的预失真光信号。光链路的PDE操作预失真的光信号，因为在链路的接收端处接收到基本上未失真的光信号。

3. 发明授权

US07356256B1 Digital performance monitoring for an optical communications system 有权
标题翻译：光通信系统的数字性能监控
公开(公告)号：US07356256B1
公开(公告)日：2008-04-08
申请号：US10629834
申请日：2003-07-30
申请人： Leo Strawczynski , Kim B. Roberts , John McNicol
发明人： Leo Strawczynski , Kim B. Roberts , John McNicol
IPC分类号： H04B10/08
CPC分类号： H04B10/077 , H04B10/07955 , H04B2210/258
摘要： A digital performance monitoring method and system for an optical communications system utilizes a channel monitor and a digital signal processor (DSP). The channel monitor is designed to monitor a respective channel signal of the optical communications system, and includes a sample memory for storing sample data including a set of sequential N-bit (where N>1) samples generated by an Analog-to-Digital (A/D) converter at a predetermined sample rate. The digital signal processor (DSP) is designed to calculate at least one performance parameter of the optical communications system based on the stored sample data. The sample rate of the A/D converter is at least equal to a baud rate of the channel, and preferably satisfies the Nyquist criterion. Multiple A/D converters may be used parallel to sample respective orthogonal components of the channel signal. In this case, the stored sample data may be representative of the complex E-field of the channel signal.
摘要翻译：用于光通信系统的数字性能监测方法和系统利用信道监视器和数字信号处理器（DSP）。信道监视器被设计为监视光通信系统的相应信道信号，并且包括用于存储样本数据的采样存储器，该采样数据包括由模数（数字）信号产生的一组顺序N位（其中N≥1） A / D）转换器。数字信号处理器（DSP）被设计为基于存储的采样数据来计算光通信系统的至少一个性能参数。 A / D转换器的采样率至少等于通道的波特率，并且优选地满足奈奎斯特准则。可以并行地使用多个A / D转换器来采样信道信号的各个正交分量。在这种情况下，存储的采样数据可以表示信道信号的复电场。

4. 发明授权

US07894721B2 Control of parameters in a global optical controller 有权
标题翻译：控制全局光控制器中的参数
公开(公告)号：US07894721B2
公开(公告)日：2011-02-22
申请号：US11533166
申请日：2006-09-19
申请人： Kim B. Roberts , Genzao G. Zhang , James Harley , Feng Shi , Leo Strawczynski
发明人： Kim B. Roberts , Genzao G. Zhang , James Harley , Feng Shi , Leo Strawczynski
IPC分类号： H04B10/08 , H04B17/00
CPC分类号： H04J14/0227 , H04B10/0793 , H04J14/0201 , H04J14/0221 , H04J14/0246 , H04J14/0279
摘要： An optical network system having a global controller capable of controlling all the elements of the network. The controller receives performance data from each optical network element and calculates a performance value for each channel transmitting through the system. The controller then isolates the channel with the minimum performance value and tests possible changes in network element parameters to find a change which would increase this performance value. Once such a change is found, it is implemented and the system is reoptimized.
摘要翻译：一种具有能够控制网络的所有元素的全局控制器的光网络系统。控制器从每个光网络元件接收性能数据，并计算通过系统传输的每个通道的性能值。然后，控制器将通道与最小性能值隔离，并测试网元参数的可能变化，以找到会增加此性能值的更改。一旦发现了这样的变化，就会实现这一改变，系统被重新优化。

5. 发明授权

US07756421B2 Electrical domain compensation of non-linear effects in an optical communications system 有权
标题翻译：光通信系统中非线性效应的电域补偿
公开(公告)号：US07756421B2
公开(公告)日：2010-07-13
申请号：US10405236
申请日：2003-04-03
申请人： Kim B. Roberts , Leo Strawczynski , Maurice S. O'Sullivan
发明人： Kim B. Roberts , Leo Strawczynski , Maurice S. O'Sullivan
IPC分类号： H04B10/00
CPC分类号： H04B10/2543
摘要： Nonlinearity-induced signal distortions are compensated by processing an input communications signal, in the electrical domain prior to Electrical-to-optical conversion and transmission through an optical link of a communications system. According to the invention, a compensation operator is determined that substantially mitigates the nonlinearity-induced signal distortions imparted to an optical signal traversing the communications system. The input communications signal is then input to the compensation operator to generate a predistorted electrical signal. This predistorted electrical signal is then used to modulate an optical source to generate a corresponding predistorted optical signal for transmission through the optical communications system. With this arrangement, arbitrary nonlinearity-induced signal distortions imparted by the optical link can be compensated in such a manner that a comparatively undistorted optical signal is obtained at the receiving end of the optical link.
摘要翻译：在通过通信系统的光链路的电 - 光转换和传输之前，通过处理电域中的输入通信信号来补偿非线性引起的信号失真。根据本发明，确定补偿算子，其基本上减轻施加到穿过通信系统的光信号的非线性引起的信号失真。然后将输入通信信号输入到补偿操作器以产生预失真的电信号。然后，该预失真的电信号用于调制光源以产生用于通过光通信系统传输的相应的预失真光信号。通过这种布置，可以以在光链路的接收端获得相对不失真的光信号的方式来补偿由光链路赋予的任意非线性引起的信号失真。

6. 发明授权

US07382984B2 Electrical domain compensation of optical dispersion in an optical communications system 有权
标题翻译：光通信系统中光散射的电域补偿
公开(公告)号：US07382984B2
公开(公告)日：2008-06-03
申请号：US10262944
申请日：2002-10-03
申请人： John McNicol , Kieran Parsons , Leo Strawczynski , Kim B. Roberts
发明人： John McNicol , Kieran Parsons , Leo Strawczynski , Kim B. Roberts
IPC分类号： H04B10/12 , H04B10/00 , H04B10/04
CPC分类号： H04B10/07951 , H04B10/07953 , H04B10/25137 , H04B10/505 , H04B10/50597 , H04B10/508 , H04B10/6161
摘要： Optical dispersion imposed on a communications signal conveyed through an optical communications system is compensated by modulating the communications signal in the electrical domain. A compensation function is determined that substantially mitigates the chromatic dispersion. The communications signal is then modulated in the electrical domain using the compensation function. Electrical domain compensation can be implemented in either the transmitter or the receiver end of the communications system. In preferred embodiments, compensation is implemented in the transmitter, using a look-up-table and digital-to-analog converter to generate an electrical predistorted signal. The electrical predistorted signal is then used to modulate an optical source to generate a corresponding predistorted optical signal for transmission through the optical communications system.
摘要翻译：施加在通过光通信系统传送的通信信号上的光色散通过调制电域中的通信信号来补偿。确定基本上减轻色散的补偿功能。然后使用补偿功能在电域中调制通信信号。可以在通信系统的发射机或接收机端实现电域补偿。在优选实施例中，使用查找表和数模转换器来在发射机中实现补偿以产生电预失真信号。然后，电预失真信号用于调制光源以产生用于通过光通信系统传输的相应的预失真光信号。

7. 发明授权

US09559778B2 Optical dispersion compensation in the electrical domain in an optical communications system 有权
标题翻译：光通信系统中电域的光色散补偿
公开(公告)号：US09559778B2
公开(公告)日：2017-01-31
申请号：US10531314
申请日：2003-07-11
申请人： John McNicol , Kieran Parsons , Leo Strawczynski , Kim B. Roberts , Maurice S. O'Sullivan
发明人： John McNicol , Kieran Parsons , Leo Strawczynski , Kim B. Roberts , Maurice S. O'Sullivan
IPC分类号： H04B10/516 , H04B10/50 , H04B10/2513 , H04B10/508
CPC分类号： H04B10/07951 , H04B10/07953 , H04B10/25137 , H04B10/505 , H04B10/50597 , H04B10/508 , H04B10/6161
摘要： Optical dispersion imposed on a communications signal conveyed through an optical communications system is compensated by modulating the communications signal in the electrical domain. A compensation function is determined that substantially mitigates the chromatic dispersion. The communications signal is then modulated in the electrical domain using the compensation function. In preferred embodiments, compensation is implemented in the transmitter, using a look-up-table and digital-to-analog converter to generate an electrical predistorted signal. The electrical predistorted signal is then used to modulate an optical source to generate a corresponding predistorted optical signal for transmission through the optical communications system.
摘要翻译：施加在通过光通信系统传送的通信信号上的光色散通过调制电域中的通信信号来补偿。确定基本上减轻色散的补偿功能。然后使用补偿功能在电域中调制通信信号。在优选实施例中，使用查找表和数模转换器来在发射机中实现补偿以产生电预失真信号。然后，电预失真信号用于调制光源以产生用于通过光通信系统传输的相应的预失真光信号。

8. 发明授权

US07457538B2 Digital performance monitoring for an optical communications system 有权
标题翻译：光通信系统的数字性能监控
公开(公告)号：US07457538B2
公开(公告)日：2008-11-25
申请号：US10145035
申请日：2002-05-15
申请人： Leo Strawczynski , Kim B. Roberts
发明人： Leo Strawczynski , Kim B. Roberts
IPC分类号： H04B10/08
CPC分类号： H04B10/077 , H04B10/07955 , H04B2210/258
摘要： A digital performance monitoring method and system for an optical communications system utilizes a channel monitor and a digital signal processor (DSP). The channel monitor is designed to monitor a respective channel signal of the optical communications system, and includes: a sample memory adapted to store sample data including a set of sequential N-bit (where N≧1) samples generated by an Analog-to-Digital (A/D) converter at a timing of a predetermined sample clock during a predetermined time interval; and a controller adapted to control storage of the sample data to the sample memory. The digital signal processor (DSP) is designed to calculate at least one performance parameter of the optical communications system based on the sample data.
摘要翻译：用于光通信系统的数字性能监测方法和系统利用信道监视器和数字信号处理器（DSP）。信道监视器被设计为监视光通信系统的相应信道信号，并且包括：采样存储器，其适于存储采样数据，该采样数据包括由模数转换器产生的一组顺序N位（其中N> = 1）样本数字（A / D）转换器在预定时间间隔内在预定采样时钟的定时; 以及控制器，其适于将样本数据的存储控制到所述样本存储器。数字信号处理器（DSP）被设计为基于样本数据来计算光通信系统的至少一个性能参数。

9. 发明申请

US20180343078A1 Power Control in an Optical Fiber Network 审中-公开
公开(公告)号：US20180343078A1
公开(公告)日：2018-11-29
申请号：US15796393
申请日：2017-10-27
申请人： Kim B. Roberts , James Harley , Qunbi Zhuge , Michael Andrew Reimer , Maurice O'Sullivan
发明人： Kim B. Roberts , James Harley , Qunbi Zhuge , Michael Andrew Reimer , Maurice O'Sullivan
IPC分类号： H04J14/02 , H04B10/079 , H04Q11/00 , H04B10/58
CPC分类号： H04J14/0221 , H04B10/0793 , H04B10/07955 , H04B10/2543 , H04B10/255 , H04B10/2557 , H04B10/58 , H04B2210/254 , H04J14/0275 , H04Q11/0066 , H04Q2011/0041 , H04Q2011/0083
摘要： Multiple receivers are comprised in a flexible coherent transceiver of a multi-span optical fiber network. Each of the multiple receivers is operative to handle communications on a respective channel. The multiple receivers measure optical characteristics. For each of the multiple receivers, the optical characteristics include optical nonlinear interactions on the respective channel, the optical nonlinear interactions being at least partially dependent from one span to another span. An optical power of a signal on each of the multiple channels is adjusted as a function of the optical characteristics.

10. 发明授权

US09143238B2 Optical modulation schemes having reduced nonlinear optical transmission impairments 有权
标题翻译：具有降低的非线性光传输损伤的光调制方案
公开(公告)号：US09143238B2
公开(公告)日：2015-09-22
申请号：US13969694
申请日：2013-08-19
申请人： Kim B. Roberts , Maurice O'Sullivan , Mahmoud Taherzadehboroujeni , Shahab Oveis Gharan , Andrew D. Shiner , Michael Andrew Reimer
发明人： Kim B. Roberts , Maurice O'Sullivan , Mahmoud Taherzadehboroujeni , Shahab Oveis Gharan , Andrew D. Shiner , Michael Andrew Reimer
IPC分类号： H04B10/04 , H04B10/00 , H04B10/532 , H04B10/516
CPC分类号： H04B10/532 , H04B10/516
摘要： A method of transmitting a data signal using an optical transmitter of an optical communications system. The optical transmitter is configured to modulate an optical carrier in successive signalling intervals to generate an optical signal. A modulation scheme is provided which comprises a multi-dimensional symbol constellation. The modulation scheme is designed such that an average degree of polarization of a modulated optical signal output from the optical transmitter has a first value when averaged across a first signaling interval, and has a second value when averaged across more than one and fewer than 100 signaling intervals. The second value is less than 10 percent of the first value. During run-time, an encoder of the optical transmitter encoding a data signal to be transmitted as symbols of the constellation, and a modulator of the optical transmitter modulating available dimensions of the optical carrier in accordance with the symbols.
摘要翻译：一种使用光通信系统的光发射机发送数据信号的方法。光发射机被配置为在连续的信令间隔中调制光载波以产生光信号。提供了一种包括多维符号星座的调制方案。调制方案被设计成使得当从第一信令间隔平均时，从光发送器输出的调制光信号的平均偏振度具有第一值，并且当平均多于一个且少于100个信令时具有第二值间隔第二个值小于第一个值的10％。在运行时间期间，光发送器的编码器编码要作为星座符号发送的数据信号，以及根据符号调制光载波的可用尺寸的光发射机的调制器。

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