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公开(公告)号：US08059970B2
公开(公告)日：2011-11-15
申请号：US12830663
申请日：2010-07-06
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。
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公开(公告)号：US07787778B2
公开(公告)日：2010-08-31
申请号：US11067011
申请日：2005-02-28
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。
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公开(公告)号：US20100272446A1
公开(公告)日：2010-10-28
申请号：US12830663
申请日：2010-07-06
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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公开(公告)号：US20060127104A1
公开(公告)日：2006-06-15
申请号：US11067011
申请日：2005-02-28
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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公开(公告)号：US08300591B1
公开(公告)日：2012-10-30
申请号：US11999919
申请日：2007-12-07
申请人： Chandra Bontu , Parsya Larijani , Mark Hawryluck
发明人： Chandra Bontu , Parsya Larijani , Mark Hawryluck
CPC分类号： H04W72/0446 , H04J11/00 , H04L5/0007 , H04L5/0037 , H04L5/0069
摘要： To allocate resources in an orthogonal frequency domain multiple access (OFDMA) system, two-dimensional rectangular regions are assigned in a frequency-time space to data bursts associated with mobile stations. At least one data burst does not fit in an available space in the frequency-time space is determined. In response to the determining, the assigned two-dimensional rectangular regions are reshaped.
摘要翻译： 为了在正交频域多址（OFDMA）系统中分配资源，在频率 - 时间空间中将二维矩形区域分配给与移动站相关联的数据突发。 确定频率 - 时间空间中的至少一个数据脉冲串不适合可用空间。 响应于确定，分配的二维矩形区域被重新形成。
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公开(公告)号：US07936999B1
公开(公告)日：2011-05-03
申请号：US11533438
申请日：2006-09-20
申请人： Mark Hawryluck , Kim B. Roberts , Kuang Tsan Wu
发明人： Mark Hawryluck , Kim B. Roberts , Kuang Tsan Wu
IPC分类号： H04B10/148
CPC分类号： H04L7/0075 , H04B10/60 , H04B10/61 , H04B10/6162 , H04B10/6165 , H04L7/0004
摘要： In a coherent optical receiver, a method of at least partially compensating Polarization Dependent Loss (PDL) of an optical signal received through an optical communications system. A respective multi-bit sample stream of each one of a pair of orthogonal received polarizations of the optical signal is tapped, and used to derive a respective metric value indicative of a quality of each multi-bit sample stream. A gain of an analog front end of the coherent optical receiver is adjusted based on the derived metric values.
摘要翻译： 在相干光接收机中，至少部分补偿通过光通信系统接收的光信号的偏振相关损耗（PDL）的方法。 光信号的一对正交接收极化中的每一个的相应多位采样流被抽头，并用于导出指示每个多位采样流的质量的相应度量值。 基于导出的度量值来调整相干光接收机的模拟前端的增益。
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