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    Transmission system and method employing electrical return-to-zero modulation
    1.
    发明申请
    Transmission system and method employing electrical return-to-zero modulation 审中-公开
    采用电归零调制的传输系统和方法

    公开(公告)号：US20060120729A1

    公开(公告)日：2006-06-08

    申请号：US11004404

    申请日：2004-12-03

    申请人： Yu Bai ,  Fei Zhu

    发明人： Yu Bai ,  Fei Zhu

    IPC分类号： H04B10/12

    CPC分类号： H04B10/541 ,  H04B10/5162

    摘要： A system and method for transmitting a signal for optical network applications. The system includes an optical transmitter configured to output an optical signal. The optical signal is associated with a return-to-zero modulation. Additionally, the system includes an optical fiber transmission system coupled to the optical transmitter and configured to transmit the optical signal and output the transmitted optical signal. The optical transmitter includes a return-to-zero driver configured to receive at least a first data signal and generate a drive signal, a light source configured to generate a laser, and an electroabsorption modulator configured to receive the laser and the drive signal and generate the optical signal. Each of the first data signal and the drive signal is an electrical signal. The optical signal includes data associated with the return-to-zero modulation. The optical fiber transmission system is free from any dispersion compensation device.

    摘要翻译： 一种用于发送光网络应用信号的系统和方法。 该系统包括被配置为输出光信号的光发送器。 光信号与归零调制相关联。 此外，该系统包括耦合到光发射机的光纤传输系统，并被配置为发送光信号并输出​​所发射的光信号。 所述光发射机包括：归零驱动器，被配置为接收至少第一数据信号并产生驱动信号;被配置为产生激光的光源;以及电吸收调制器，被配置为接收所述激光器和所述驱动信号并产生 光信号。 第一数据信号和驱动信号中的每一个都是电信号。 光信号包括与归零调制相关联的数据。 光纤传输系统不含任何色散补偿装置。

    System and method for chirped light source
    2.
    发明申请
    System and method for chirped light source 有权
    啁啾光源的系统和方法

    公开(公告)号：US20060263099A1

    公开(公告)日：2006-11-23

    申请号：US11347558

    申请日：2006-02-02

    申请人： Yu Bai ,  Fei Zhu

    发明人： Yu Bai ,  Fei Zhu

    IPC分类号： H04B10/12

    CPC分类号： H04B10/508 ,  H04B10/505 ,  H04B2210/254

    摘要： A system and method for providing chirped light for an optical network. The system includes a light source configured to provide a light. The system additionally includes a driving signal source configured to provide a first driving signal. The system also includes an amplifier configured to receive the first driving signal, amplify the first driving signal, and provide a second driving signal at a predetermined amplification level, the second driving signal being the amplified first signal. Additionally, the system includes a splitter configured to receive the second driving signal and split the second driving signal into a third driving signal and a fourth driving signal. The system also includes a first attenuator configured to receive the third driving signal, attenuate the third driving signal at a first attenuation level, and provide a fifth driving signal, the fifth driving signal being the third driving signal attenuated by the first attenuator.

    摘要翻译： 一种用于为光网络提供啁啾光的系统和方法。 该系统包括被配置为提供光的光源。 该系统还包括被配置为提供第一驱动信号的驱动信号源。 该系统还包括放大器，其被配置为接收第一驱动信号，放大第一驱动信号，并以预定的放大电平提供第二驱动信号，第二驱动信号是放大的第一信号。 另外，该系统包括分配器，其被配置为接收第二驱动信号并将第二驱动信号分成第三驱动信号和第四驱动信号。 该系统还包括被配置为接收第三驱动信号的第一衰减器，以第一衰减电平衰减第三驱动信号，并提供第五驱动信号，第五驱动信号是由第一衰减器衰减的第三驱动信号。

    Method and Apparatus of Using Joint Timing Recovery for a Coherent Optical System
    4.
    发明申请
    Method and Apparatus of Using Joint Timing Recovery for a Coherent Optical System 有权
    用于相干光学系统的联合定时恢复的方法和装置

    公开(公告)号：US20130243420A1

    公开(公告)日：2013-09-19

    申请号：US13423959

    申请日：2012-03-19

    申请人： Chuandong Li ,  Zhuhong Zhang ,  Fei Zhu ,  Yu Sheng Bai

    发明人： Chuandong Li ,  Zhuhong Zhang ,  Fei Zhu ,  Yu Sheng Bai

    IPC分类号： H04B10/08

    CPC分类号： H04B10/6162

    摘要： An apparatus and method for performing joint equalization and timing recovery in coherent optical systems. The method includes equalizing signals to generate compensated polarization signals, wherein timing error in a distorted optical signal is calculated based on one of the compensated polarization signals. The method further includes performing resampling polarization signals to correct timing offset in an optical signal based on the calculated timing error. The calculated timing error may also be used to adaptively control one or more operating parameters of an external device.

    摘要翻译： 用于在相干光学系统中执行联合均衡和定时恢复的装置和方法。 该方法包括均衡信号以产生补偿的偏振信号，其中基于补偿的偏振信号中的一个来计算失真的光信号中的定时误差。 该方法还包括基于所计算的定时误差来执行重采样偏振信号以校正光信号中的定时偏移。 所计算的定时误差也可用于自适应地控制外部设备的一个或多个操作参数。

    Side band pilot tone for digital signal processing in polarization multiplexed coherent optical communication system
    5.
    发明授权
    Side band pilot tone for digital signal processing in polarization multiplexed coherent optical communication system 有权
    用于偏振复用相干光通信系统中数字信号处理的边带导频

    公开(公告)号：US08340534B2

    公开(公告)日：2012-12-25

    申请号：US12847749

    申请日：2010-07-30

    申请人： Zhuhong Zhang ,  Chuandong Li ,  Fei Zhu ,  Yusheng Bai

    发明人： Zhuhong Zhang ,  Chuandong Li ,  Fei Zhu ,  Yusheng Bai

    IPC分类号： H04B10/06

    CPC分类号： H04J14/06 ,  H04J14/002

    摘要： A method comprising generating a plurality of first symbols that correspond to a side band pilot tone (SBPT) signal for a plurality of data streams, mapping the first symbols into a plurality of second symbols that correspond to a plurality of signal components of the polarization multiplexed (PM) optical signal, and transmitting the second symbols in a plurality of data blocks of a PM optical signal. An apparatus comprising at least one processor coupled to a memory and configured to obtain a data block that comprises a plurality of SBPTs in a received PM optical signal, estimate a set of values for a carrier frequency and a polarization state, update a tap weight of a master equalizer based on the estimated set of values, and update a plurality of slave equalizers based on the updated tap weight of the master equalizer.

    摘要翻译： 一种方法，包括生成对应于多个数据流的边带导频（SBPT）信号的多个第一符号，将第一符号映射成与偏振复用的多个信号分量相对应的多个第二符号 （PM）光信号，并且在PM光信号的多个数据块中发送第二符号。 一种装置，包括耦合到存储器并被配置为获得包含接收的PM光信号中的多个SBPT的数据块的至少一个处理器，估计载波频率和极化状态的一组值，更新一个 基于估计的值集合的主均衡器，并且基于主均衡器的更新抽头权重来更新多个从均衡器。

    METHOD AND SYSTEM FOR BAND BLOCKING IN AN OPTICAL TELECOMMUNICATION NETWORK
    6.
    发明申请
    METHOD AND SYSTEM FOR BAND BLOCKING IN AN OPTICAL TELECOMMUNICATION NETWORK 有权
    光通信网络中的带阻塞方法和系统

    公开(公告)号：US20080138066A1

    公开(公告)日：2008-06-12

    申请号：US11863226

    申请日：2007-09-27

    申请人： Fei Zhu ,  Yu Sheng Bai

    发明人： Fei Zhu ,  Yu Sheng Bai

    IPC分类号： H04K3/00

    CPC分类号： H04J14/0204 ,  H04J14/0205 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0221

    摘要： Method and system for band blocking in an optical telecommunication network. According to an embodiment, the present invention provides a system for optical network. The system includes an input that is configured to receive an input signal through a first optical input. The system also includes a band splitting module that is coupled to the input. The band splitting module is configured to separate the input signal into a plurality of bands. The plurality of bands includes a first band and a second band. The first band includes a first plurality of wave channels. The first plurality of wave channels is characterized by a first channel spacing. The second band includes a second plurality of wave channels, which is characterized by a second channel spacing.

    摘要翻译： 光通信网络中带阻的方法和系统。 根据实施例，本发明提供了一种用于光网络的系统。 该系统包括被配置为通过第一光学输入接收输入信号的输入。 该系统还包括耦合到输入的频带分割模块。 带分割模块被配置为将输入信号分离成多个频带。 多个频带包括第一频带和第二频带。 第一频带包括第一多个波道。 第一多个波通道的特征在于第一通道间隔。 第二频带包括第二多个波通道，其特征在于第二通道间隔。

    METHOD WITH IMPROVED PHASE ROBUSTNESS IN COHERENT DETECTED OPTICAL SYSTEM
    7.
    发明申请
    METHOD WITH IMPROVED PHASE ROBUSTNESS IN COHERENT DETECTED OPTICAL SYSTEM 有权
    在相干检测光学系统中改进相位稳定性的方法

    公开(公告)号：US20130315609A1

    公开(公告)日：2013-11-28

    申请号：US13480230

    申请日：2012-05-24

    申请人： Chuandong Li ,  Yuanjie Chen ,  Zhuhong Zhang ,  Yi Cai ,  Fei Zhu

    发明人： Chuandong Li ,  Yuanjie Chen ,  Zhuhong Zhang ,  Yi Cai ,  Fei Zhu

    IPC分类号： H04B10/06

    CPC分类号： H04B10/613 ,  H04B10/6164

    摘要： An optical signal receiver tracks local oscillator frequency offset (LOFO) and compensates for the phase distortion introduced in the received signals as a result of utilizing the local oscillator within a coherent detection scheme. This phase distortion is basically a constant phase rotation caused by the LOFO and implementation of the receiver using coherent detection and a digital interferometer instead of a conventional (yet complex) carrier phase estimation or recovery scheme. With an optical receiver implemented in this manner, the requirement of using a precise local oscillator laser with low frequency offset is less important.

    摘要翻译： 光信号接收器跟踪本地振荡器频率偏移（LOFO），并且通过在相干检测方案中利用本地振荡器来补偿在接收信号中引入的相位失真。 该相位失真基本上是由LOFO引起的恒定相位旋转和使用相干检测的接收机的实现以及数字干涉仪而不是常规（但复杂的）载波相位估计或恢复方案。 通过以这种方式实现的光接收机，使用具有低频偏移的精确本地振荡器激光器的要求不那么重要。

    Method with improved phase robustness in coherent detected optical system
    10.
    发明授权
    Method with improved phase robustness in coherent detected optical system 有权
    相干检测光学系统相位鲁棒性提高的方法

    公开(公告)号：US09025969B2

    公开(公告)日：2015-05-05

    申请号：US13480230

    申请日：2012-05-24

    申请人： Chuandong Li ,  Yuanjie Chen ,  Zhuhong Zhang ,  Yi Cai ,  Fei Zhu

    发明人： Chuandong Li ,  Yuanjie Chen ,  Zhuhong Zhang ,  Yi Cai ,  Fei Zhu

    IPC分类号： H04B10/06 ,  H04B10/61

    CPC分类号： H04B10/613 ,  H04B10/6164

    摘要： An optical signal receiver tracks local oscillator frequency offset (LOFO) and compensates for the phase distortion introduced in the received signals as a result of utilizing the local oscillator within a coherent detection scheme. This phase distortion is basically a constant phase rotation caused by the LOFO and implementation of the receiver using coherent detection and a digital interferometer instead of a conventional (yet complex) carrier phase estimation or recovery scheme. With an optical receiver implemented in this manner, the requirement of using a precise local oscillator laser with low frequency offset is less important.

    摘要翻译： 光信号接收器跟踪本地振荡器频率偏移（LOFO），并且通过在相干检测方案中利用本地振荡器来补偿在接收信号中引入的相位失真。 该相位失真基本上是由LOFO引起的恒定相位旋转和使用相干检测的接收机的实现以及数字干涉仪而不是常规（但复杂的）载波相位估计或恢复方案。 通过以这种方式实现的光接收机，使用具有低频偏移的精确本地振荡器激光器的要求不那么重要。