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1. 发明申请

US20050007642A1 Optical E-field modulation using a Mach-Zehnder interferometer 有权
标题翻译：使用马赫 - 曾德干涉仪的光学电场调制
公开(公告)号：US20050007642A1
公开(公告)日：2005-01-13
申请号：US10677223
申请日：2003-10-03
申请人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
发明人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
IPC分类号： H04B10/18 , G02F1/00 , G02B26/00
CPC分类号： G02F1/225 , H04B10/25137 , H04B10/505
摘要： A method for modulating the E-field of an optical carrier signal utilizes a Mach-Zehnder modulator having a pair of independently controllable branches. A pair of independent branch drive signals VL(t) and VR(t) are derived. Each branch of the MZ modulator is driven with a respective one of the independent branch drive signals. By this means, a low cost conventional MZ modulator (interferometer) can be used to perform complex modulation of the E-field of the optical carrier. In some embodiments, this functionality is used to facilitate precompensation of optical impairments of an optical communications system.
摘要翻译：用于调制光载波信号的电场的方法利用具有一对可独立控制的分支的马赫 - 曾德调制器。导出一对独立的分支驱动信号VL（t）和VR（t）。 MZ调制器的每个分支由独立的分支驱动信号中的相应一个驱动。通过这种方式，可以使用低成本的常规MZ调制器（干涉仪）来执行光学载体的E场的复杂调制。在一些实施例中，该功能用于促进光学通信系统的光学损伤的预补偿。

2. 发明授权

US07023601B2 Optical E-field modulation using a Mach-Zehnder interferometer 有权
标题翻译：使用马赫 - 曾德干涉仪的光学电场调制
公开(公告)号：US07023601B2
公开(公告)日：2006-04-04
申请号：US10677223
申请日：2003-10-03
申请人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
发明人： Douglas McGhan , Maurice O'Sullivan , Yves Beaulieu
IPC分类号： G02F1/03 , G02F1/07
CPC分类号： G02F1/225 , H04B10/25137 , H04B10/505
摘要： A method for modulating the E-field of an optical carrier signal utilizes a Mach-Zehnder modulator having a pair of independently controllable branches. A pair of independent branch drive signals VL(t) and VR(t) are derived. Each branch of the MZ modulator is driven with a respective one of the independent branch drive signals. By this means, a low cost conventional MZ modulator (interferometer) can be used to perform complex modulation of the E-field of the optical carrier. In some embodiments, this functionality is used to facilitate precompensation of optical impairments of an optical communications system.
摘要翻译：用于调制光载波信号的电场的方法利用具有一对可独立控制的分支的马赫 - 曾德调制器。导出一对独立的分支驱动信号V L（t）和V R（t）。 MZ调制器的每个分支由独立的分支驱动信号中的相应一个驱动。通过这种方式，可以使用低成本的常规MZ调制器（干涉仪）来执行光学载体的E场的复杂调制。在一些实施例中，该功能用于促进光学通信系统的光学损伤的预补偿。

3. 发明授权

US08059970B2 Control system for a polar optical transmitter 有权
标题翻译：极性光发射机的控制系统
公开(公告)号：US08059970B2
公开(公告)日：2011-11-15
申请号：US12830663
申请日：2010-07-06
申请人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
发明人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
IPC分类号： H04B10/00
CPC分类号： H04B10/58 , H04B10/5053 , H04B10/5055 , H04B10/50572 , H04B10/50575
摘要： A method of controlling a polar optical transmitter comprising a dual-branch Mach-Zehnder (MZ) modulator driven by a pair of independent electrical drive signals. A cost function is provided which defines a relationship between a control parameter of the optical transmitter and a power level of an output optical signal generated by the MZ modulator. A selected component of the electrical drive signals is dithered using a predetermined dither signal. A modulation depth of the output optical signal power level corresponding to the dither signal is detected, and the control parameter adjusted based on the cost function and the detection result.
摘要翻译：一种控制极光学发射机的方法，包括由一对独立电驱动信号驱动的双分支马赫 - 曾德（MZ）调制器。提供了一种成本函数，其定义了光发射机的控制参数与由MZ调制器产生的输出光信号的功率电平之间的关系。电驱动信号的选定分量使用预定的抖动信号进行抖动。检测与抖动信号对应的输出光信号功率电平的调制深度，并根据成本函数和检测结果调整控制参数。

4. 发明授权

US07787778B2 Control system for a polar optical transmitter 有权
标题翻译：极性光发射机的控制系统
公开(公告)号：US07787778B2
公开(公告)日：2010-08-31
申请号：US11067011
申请日：2005-02-28
申请人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
发明人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
IPC分类号： H04B10/00
CPC分类号： H04B10/58 , H04B10/5053 , H04B10/5055 , H04B10/50572 , H04B10/50575
摘要： A method of controlling a polar optical transmitter comprising a dual-branch Mach-Zehnder (MZ) modulator driven by a pair of independent electrical drive signals. A cost function is provided which defines a relationship between a control parameter of the optical transmitter and a power level of an output optical signal generated by the MZ modulator. A selected component of the electrical drive signals is dithered using a predetermined dither signal. A modulation depth of the output optical signal power level corresponding to the dither signal is detected, and the control parameter adjusted based on the cost function and the detection result.
摘要翻译：一种控制极光学发射机的方法，包括由一对独立电驱动信号驱动的双分支马赫 - 曾德（MZ）调制器。提供了一种成本函数，其定义了光发射机的控制参数与由MZ调制器产生的输出光信号的功率电平之间的关系。电驱动信号的选定分量使用预定的抖动信号进行抖动。检测与抖动信号对应的输出光信号功率电平的调制深度，并根据成本函数和检测结果调整控制参数。

5. 发明授权

US08983309B2 Constrained continuous phase modulation and demodulation in an optical communications system 有权
标题翻译：光通信系统中的约束连续相位调制和解调
公开(公告)号：US08983309B2
公开(公告)日：2015-03-17
申请号：US13371846
申请日：2012-02-13
申请人： James Harley , Douglas McGhan , Shahab Oveis Gharan , Kim B. Roberts , Mark Rollins
发明人： James Harley , Douglas McGhan , Shahab Oveis Gharan , Kim B. Roberts , Mark Rollins
IPC分类号： H04B10/06 , H04B10/04
CPC分类号： H04B10/5561
摘要： A transmitter in an optical communications system includes a digital signal processor for processing a data signal to generate a sample stream encoding successive symbols in accordance with a constrained phase modulation scheme having a constellation of at least two symbols and a modulation phase constrained to a phase range spanning less than 4π. A digital-to-analog converter converts the sample stream into a corresponding analog drive signal. A finite range phase modulator modulates a phase of a continuous wavelength channel light in accordance with the analog drive signal, to generate a modulated channel light for transmission through the optical communications system. A receiver in the optical communications system includes an optical stage for detecting phase and amplitude of the modulated channel light and for generating a corresponding sample stream, and a digital signal processor for processing the sample stream to estimate each successive symbol of the modulated channel light.
摘要翻译：光通信系统中的发射机包括数字信号处理器，用于处理数据信号以产生根据具有至少两个符号的星座的约束相位调制方案编码连续码元的采样流，以及限制为相位范围的调制相位跨度小于4＆pgr。数模转换器将采样流转换成相应的模拟驱动信号。有限范围相位调制器根据模拟驱动信号调制连续波长信道光的相位，以产生用于通过光通信系统传输的调制信道光。光通信系统中的接收机包括用于检测调制信道光的相位和幅度并用于产生相应样本流的光学级，以及用于处理样本流以估计调制信道光的每个连续符号的数字信号处理器。

6. 发明申请

US20100272446A1 CONTROL SYSTEM FOR A POLAR OPTICAL TRANSMITTER 有权
标题翻译：极光发射机的控制系统
公开(公告)号：US20100272446A1
公开(公告)日：2010-10-28
申请号：US12830663
申请日：2010-07-06
申请人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
发明人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
IPC分类号： H04B10/04
CPC分类号： H04B10/58 , H04B10/5053 , H04B10/5055 , H04B10/50572 , H04B10/50575
摘要： A method of controlling a polar optical transmitter comprising a dual-branch Mach-Zehnder (MZ) modulator driven by a pair of independent electrical drive signals. A cost function is provided which defines a relationship between a control parameter of the optical transmitter and a power level of an output optical signal generated by the MZ modulator. A selected component of the electrical drive signals is dithered using a predetermined dither signal. A modulation depth of the output optical signal power level corresponding to the dither signal is detected, and the control parameter adjusted based on the cost function and the detection result.
摘要翻译：一种控制极光学发射机的方法，包括由一对独立电驱动信号驱动的双分支马赫 - 曾德（MZ）调制器。提供了一种成本函数，其定义了光发射机的控制参数与由MZ调制器产生的输出光信号的功率电平之间的关系。电驱动信号的选定分量使用预定的抖动信号进行抖动。检测与抖动信号对应的输出光信号功率电平的调制深度，并根据成本函数和检测结果调整控制参数。

7. 发明申请

US20060127104A1 Control system for a polar optical transmitter 有权
标题翻译：极性光发射机的控制系统
公开(公告)号：US20060127104A1
公开(公告)日：2006-06-15
申请号：US11067011
申请日：2005-02-28
申请人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
发明人： James Harley , Douglas McGhan , Mohammad Sotoodeh , Anant Grewal , Mark Hawryluck
IPC分类号： H04B10/04
CPC分类号： H04B10/58 , H04B10/5053 , H04B10/5055 , H04B10/50572 , H04B10/50575
摘要： A method of controlling a polar optical transmitter comprising a dual-branch Mach-Zehnder (MZ) modulator driven by a pair of independent electrical drive signals. A cost function is provided which defines a relationship between a control parameter of the optical transmitter and a power level of an output optical signal generated by the MZ modulator. A selected component of the electrical drive signals is dithered using a predetermined dither signal. A modulation depth of the output optical signal power level corresponding to the dither signal is detected, and the control parameter adjusted based on the cost function and the detection result.
摘要翻译：一种控制极光学发射机的方法，包括由一对独立电驱动信号驱动的双分支马赫 - 曾德（MZ）调制器。提供了一种成本函数，其定义了光发射机的控制参数与由MZ调制器产生的输出光信号的功率电平之间的关系。电驱动信号的选定分量使用预定的抖动信号进行抖动。检测与抖动信号对应的输出光信号功率电平的调制深度，并根据成本函数和检测结果调整控制参数。

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