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26 条记录 (耗时 0.023 秒)

    Modulation E-field based control of a non-linear transmitter
    11.
    发明申请
    Modulation E-field based control of a non-linear transmitter 有权
    一种非线性变送器的调制电场控制

    公开(公告)号：US20060127102A1

    公开(公告)日：2006-06-15

    申请号：US11008515

    申请日：2004-12-10

    申请人： Kim Roberts ,  James Harley

    发明人： Kim Roberts ,  James Harley

    IPC分类号： H04B10/04

    CPC分类号： H04B10/5053 ,  H04B10/505 ,  H04B10/5055 ,  H04B10/50572 ,  H04B10/50575 ,  H04B10/58

    摘要： In a method of synthesizing an optical signal, a multi-bit digital representation of a desired optical E-field is generated. The multi-bit digital representation has a resolution of N1-bits, where N1 is an integer greater than 2. At least two analog drive signals are synthesized based on the multi-bit digital representation. Each analog drive signal exhibits excursions between 2M discrete states (i.e. has a resolution of M-bits), where M is an integer greater than 2. An electrical-to-optical (E/O) converter is driven using the analog drive signals to generate an output optical E-field at an output of the E/O converter. An error is detected between the output optical E-field and the desired complex E-field waveform, and at least one parameter adjusted so as to minimize the detected error.

    摘要翻译： 在合成光信号的方法中，产生期望的光电场的多位数字表示。 多位数字表示具有N1位的分辨率，其中N1是大于2的整数。至少两个模拟驱动信号基于多位数字表示被合成。 每个模拟驱动信号表现出两个离散状态之间的偏移（即，具有M比特的分辨率），其中M是大于2的整数。电 - 光（E / O）转换器 使用模拟驱动信号驱动，以在E / O转换器的输出端产生输出光电场。 在输出光电场和期望的复电场场波形之间检测到误差，并且调整至少一个参数以使检测到的误差最小化。

    Optimization of a communications system based on identification of an optical member
    13.
    发明申请
    Optimization of a communications system based on identification of an optical member 审中-公开
    基于光学构件的识别的通信系统的优化

    公开(公告)号：US20050074244A1

    公开(公告)日：2005-04-07

    申请号：US10625696

    申请日：2003-07-24

    申请人： Kim Roberts ,  Maurice O'Sullivan ,  Paul Warren ,  Les Chan

    发明人： Kim Roberts ,  Maurice O'Sullivan ,  Paul Warren ,  Les Chan

    IPC分类号： H04B10/02 ,  H04B10/08 ,  H04B10/00

    CPC分类号： H04B10/0793

    摘要： An optical communications system is adapted for connection to an optical fiber link of an optical communications network. The system obtains a fiber identifier respecting the optical fiber link; a respective optimum setting of one or more parameters of the optical communications system; and adjusts a respective value of each parameter in accordance with the respective optimum setting. The fiber identifier can be obtained from a value of at least one fiber transmission property of the optical fiber link. The fiber transmission property value is used to search a look-up table of class definitions, each class definition including a respective class identifier and at least one corresponding characteristic transmission property value. A class identifier is selected as the fiber identifier from the class definition for which each characteristic transmission property value most closely matches a corresponding fiber transmission property value. Each class definition may also include an optimum setting for each parameter.

    摘要翻译： 光通信系统适于连接到光通信网络的光纤链路。 该系统获得关于光纤链路的光纤标识符; 光通信系统的一个或多个参数的相应最佳设置; 并根据各自的最佳设定调整各参数的相应值。 可以从光纤链路的至少一个光纤传输特性的值获得光纤标识符。 光纤传输属性值用于搜索类定义的查找表，每个类定义包括相应的类标识符和至少一个对应的特征传输属性值。 从类别定义中选择类别标识符作为每个特征传输特性值与其对应的光纤传输属性值最匹配的类定义。 每个类定义也可以包括每个参数的最佳设置。

    Mapping arbitrary signals into SONET
    18.
    发明申请
    Mapping arbitrary signals into SONET 有权
    将任意信号映射到SONET

    公开(公告)号：US20060088061A1

    公开(公告)日：2006-04-27

    申请号：US11289351

    申请日：2005-11-30

    申请人： Kim Roberts

    发明人： Kim Roberts

    IPC分类号： H04L12/56 ,  H04J3/24

    CPC分类号： H04J3/1629 ,  H04J3/1611

    摘要： A synchronizer/de-synchronizer maps continuous format signals of an arbitrary rate into frames of pre-selected single common rate, such as SONET frames, with no bite changed and very little jitter or wander added. In this way, the continuous format signal may be carried transparently as a tributary of a SONET network. Each frame comprises a definite number of fixed stuff bits, including transport overhead bits and reminder fixed stuff bits. A frame also comprises an adjustable number of adaptive stuff bits, resulting from the phase difference between the arbitrary rate and the common rate. A mapping function is performed in a tributary unit shelf of a SONET transport shelf, and the reverse mapping function is performed in a similar way at the far end of a SONET connection. The stuff bits are spread uniformly within the frame.

    摘要翻译： 同步器/去同步器将任意速率的连续格式信号映射到预先选择的单个公共速率的帧，例如SONET帧，没有变化，并且添加了很少的抖动或漂移。 以这种方式，连续格式信号可以作为SONET网络的支路透明地携带。 每个帧包括一定数量的固定填充位，包括传输开销位和提醒固定填充位。 帧还包括可调数量的自适应填充位，由任意速率和公共速率之间的相位差产生。 在SONET传输架的支路单元架中执行映射功能，并且以类似的方式在SONET连接的远端执行反向映射功能。 填充位在帧内均匀分布。

    Optical dispersion compesnation in the electrical domain in an optical communications system
    19.
    发明申请
    Optical dispersion compesnation in the electrical domain in an optical communications system 有权
    在光通信系统中的电域中的光散射合成

    公开(公告)号：US20060078336A1

    公开(公告)日：2006-04-13

    申请号：US10531314

    申请日：2003-07-11

    申请人： John McNicol ,  Kieran Parsons ,  Leo Strawczynski ,  Kim Roberts ,  Maurice O'Sullivan

    发明人： John McNicol ,  Kieran Parsons ,  Leo Strawczynski ,  Kim Roberts ,  Maurice O'Sullivan

    IPC分类号： H04B10/12

    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。

    Method and apparatus for laser line-width compensation
    20.
    发明授权
    Method and apparatus for laser line-width compensation 有权
    用于激光线宽补偿的方法和装置

    公开(公告)号：US07200339B1

    公开(公告)日：2007-04-03

    申请号：US10411332

    申请日：2003-04-11

    申请人： Kim Roberts ,  Maurice O'Sullivan

    发明人： Kim Roberts ,  Maurice O'Sullivan

    IPC分类号： H04B10/00 ,  H04B10/04

    CPC分类号： H04B10/58 ,  H04B10/505 ,  H04B10/50572 ,  H04B10/50577 ,  H04B10/50593 ,  H04B10/50597

    摘要： Laser line-width compensation is performed by detecting noise in an optical signal output by a laser of an optical communications system and controlling a complex modulator to cancel the detected noise. Line-width compensation can be performed for both amplitude and phase noise in the optical signal. Noise measurements are used to compute a complex scalar. The complex scalar is used by a compensation processor to modify an input signal that is to be transmitted by the optical communications system. The modified input signal controls the complex modulator, which modulates the output signal to cancel the noise.

    摘要翻译： 通过检测由光通信系统的激光器输出的光信号中的噪声来执行激光线宽补偿，并且控制复调制器以消除检测到的噪声。 可对光信号中的幅度和相位噪声进行线宽补偿。 噪声测量用于计算复杂标量。 复数标量由补偿处理器使用以修改由光通信系统传输的输入信号。 修改的输入信号控制复调制器，其调制输出信号以消除噪声。