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    System and method for optically labeled packet transmission
    1.
    发明授权
    System and method for optically labeled packet transmission 失效
    用于光标签包传输的系统和方法

    公开(公告)号：US07340168B2

    公开(公告)日：2008-03-04

    申请号：US10673701

    申请日：2003-09-29

    申请人： Randy Clinton Giles ,  Xiang Liu ,  Yikai Su ,  Xing Wei

    发明人： Randy Clinton Giles ,  Xiang Liu ,  Yikai Su ,  Xing Wei

    IPC分类号： H04J14/00 ,  H04B10/02

    CPC分类号： H04B10/505 ,  H04B10/5051

    摘要： A system and method for transmitting optically labeled packets using DPSK/ASK modulation. The system comprises a transmitter including at least two modulators adapted to provide DPSK modulation of a payload portion of optically labeled packets and ASK modulation for a label portion of the optically labeled packets. A receiver is also provided which includes a balanced detector for detection of the payload portion of the optically labeled packets.

    摘要翻译： 一种使用DPSK / ASK调制发送光标签分组的系统和方法。 该系统包括发射机，包括至少两个调制器，其适于提供光学标记的分组的有效载荷部分的DPSK调制和用于光学标记的分组的标签部分的ASK调制。 还提供了一种接收机，其包括用于检测光学标记的分组的有效载荷部分的平衡检测器。

    System and method for optically labeled packet transmission
    4.
    发明申请
    System and method for optically labeled packet transmission 失效
    用于光标签包传输的系统和方法

    公开(公告)号：US20050069329A1

    公开(公告)日：2005-03-31

    申请号：US10673701

    申请日：2003-09-29

    申请人： Randy Giles ,  Xiang Liu ,  Yikai Su ,  Xing Wei

    发明人： Randy Giles ,  Xiang Liu ,  Yikai Su ,  Xing Wei

    IPC分类号： H04L27/36 ,  H04B10/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04J14/08

    CPC分类号： H04B10/505 ,  H04B10/5051

    摘要： A system and method for transmitting optically labeled packets using DPSK/ASK modulation. The system comprises a transmitter including at least two modulators adapted to provide DPSK modulation of a payload portion of optically labeled packets and ASK modulation for a label portion of the optically labeled packets. A receiver is also provided which includes a balanced detector for detection of the payload portion of the optically labeled packets.

    摘要翻译： 一种使用DPSK / ASK调制发送光标签分组的系统和方法。 该系统包括发射机，包括至少两个调制器，其适于提供光学标记的分组的有效载荷部分的DPSK调制和用于光学标记的分组的标签部分的ASK调制。 还提供了一种接收机，其包括用于检测光学标记的分组的有效载荷部分的平衡检测器。

    System and method of optical transmission
    5.
    发明授权
    System and method of optical transmission 有权
    光传输系统和方法

    公开(公告)号：US07277647B2

    公开(公告)日：2007-10-02

    申请号：US10099105

    申请日：2002-03-14

    申请人： Douglas M Gill ,  Xiang Liu ,  Xing Wei

    发明人： Douglas M Gill ,  Xiang Liu ,  Xing Wei

    IPC分类号： H04B10/04

    CPC分类号： H04B10/505 ,  H04B10/5053 ,  H04B10/5563

    摘要： Minimum shift keying (MSK) is used as the coding scheme in a high bit rate optical transmission system, and the signal format is either RZ (return-to-zero) or NRZ (non-return-to-zero). The system can combine multiple individual channels with different wavelengths in a WDM or dense wavelength division multiplexed (DWDM) arrangement. Dispersion management can be provided using several techniques, such as quasi-linear transmissions or conventional RZ transmissions. At the transmitter, an optical MSK transmitter is used to modulate the phase of a stream of high bit rate (e.g., 40 Gbit/s) optical signals. Many such data streams can be combined in a wavelength division multiplexer and transmitted to a remote receiver, where the signal is wavelength division demultiplexed. The encoded data in each wavelength channel is then recovered by an MSK receiver, which may consist of a delay demodulator and a balanced detector.

    摘要翻译： 最小移位键控（MSK）用作高比特率光传输系统中的编码方案，信号格式为RZ（归零）或NRZ（非归零）。 该系统可以在WDM或密集波分复用（DWDM）布置中组合具有不同波长的多个单独信道。 可以使用几种技术来提供色散管理，例如准线性传输或常规RZ传输。 在发射机处，使用光学MSK发射机来调制高比特率（例如40Gbit / s）光信号流的相位。 许多这样的数据流可以组合在波分多路复用器中并被发送到远程接收机，其中信号被波分解复用。 每个波长信道中的编码数据然后由MSK接收机恢复，MSK接收机可以由延迟解调器和平衡检测器组成。

    High-bit-rate long-haul fiber optic communication system techniques and arrangements
    6.
    发明授权
    High-bit-rate long-haul fiber optic communication system techniques and arrangements 有权
    高比特率长距离光纤通信系统的技术和布置

    公开(公告)号：US07277645B2

    公开(公告)日：2007-10-02

    申请号：US10099077

    申请日：2002-03-14

    申请人： Douglas M Gill ,  Xiang Liu ,  Xing Wei

    发明人： Douglas M Gill ,  Xiang Liu ,  Xing Wei

    IPC分类号： H04B10/04

    CPC分类号： H04B10/2563 ,  G02B2006/12142 ,  G02B2006/12159 ,  G02F1/225

    摘要： A 90 degree Alternate-Phase (AP) on-off keying (OOK) transmission format for high bit rate, long-haul optical transmission systems employing a chirped or a chirp-free pulse stream generated by a pulse generator (e.g., Mach Zehnder modulator) driven by mixing two electrical signals—one for intensity modulation and another for pulse modulation. These electrical signals may be two properly skewed sinusoidal electrical signals at half the desired data rate thereby generating a pulse stream in which the maximum optical phase modulation occurs at the intensity peak of each pulse and is 90 degrees out of phase with its nearest neighbors.

    摘要翻译： 采用由脉冲发生器产生的啁啾或无啁啾脉冲流的高比特率，长途光传输系统的90度交替相位（AP）开关键控（OOK）传输格式（例如，Mach Zehnder调制器 ）通过混合两个电信号驱动，一个用于强度调制，另一个用于脉冲调制。 这些电信号可以是两倍于所需数据速率的两个正确偏斜的正弦电信号，从而产生脉冲流，其中最大光相位调制发生在每个脉冲的强度峰值处，并且与其最近的相邻部分相差90度。

    Reconstruction and restoration of an optical signal field
    7.
    发明授权
    Reconstruction and restoration of an optical signal field 有权
    光信号场的重建和恢复

    公开(公告)号：US09312964B2

    公开(公告)日：2016-04-12

    申请号：US11525786

    申请日：2006-09-22

    申请人： Xiang Liu ,  Xing Wei

    发明人： Xiang Liu ,  Xing Wei

    IPC分类号： H04B10/60 ,  H04B10/516 ,  H04B10/67

    CPC分类号： H04B10/60 ,  H04B10/5161 ,  H04B10/677

    摘要： A digital version of both amplitude and phase of a received optical is developed by employing direct differential detection in conjunction with digital signal processing. The signal is split into three copies. An intensity profile is conventionally obtained using one of the copies. Phase information is obtained by supplying each remaining copy to a respective one of a pair of optical delay interferometers that have orthogonal phase offsets, followed by respective balanced intensity detectors. The output of each of the balanced intensity detectors, and the intensity profile, are each converted to respective digital representations. Signal processing is used to develop the phase information from the digital representations of the output of the balanced intensity detector outputs.

    摘要翻译： 通过采用与数字信号处理相结合的直接差分检测来开发接收光学的幅度和相位的数字版本。 信号分为三份。 通常使用其中一个副本来获得强度分布。 通过将每个剩余副本提供给具有正交相位偏移的一对光学延迟干涉仪中的相应一个，随后是相应的平衡强度检测器来获得相位信息。 每个平衡强度检测器的输出和强度分布都被转换成各自的数字表示。 信号处理用于从平衡强度检测器输出的输出的数字表示中开发相位信息。

    Duobinary receiver
    8.
    发明授权
    Duobinary receiver 有权
    二元接收器

    公开(公告)号：US07613402B2

    公开(公告)日：2009-11-03

    申请号：US10730413

    申请日：2003-12-08

    申请人： Xiang Liu ,  Lothar Benedict Erhard Josef Moeller ,  Xing Wei ,  Chongjin Xie

    发明人： Xiang Liu ,  Lothar Benedict Erhard Josef Moeller ,  Xing Wei ,  Chongjin Xie

    IPC分类号： H04B10/06

    CPC分类号： H04L25/068 ,  H04B10/69 ,  H04L7/042 ,  H04L25/4923

    摘要： An optical receiver adapted to process an optical duobinary signal received over a transmission link in an optical communication system. In one embodiment, the receiver has an optical-to-electrical signal converter coupled to a decoder. The decoder processes an electrical signal generated by the converter to generate a bit sequence corresponding to the optical signal. To generate a bit value, the decoder integrates the electrical signal using a sampling window and compares the integration result with a decision threshold value. In one configuration, the width of the sampling window and the decision threshold value are selected based on the eye diagram and noise distribution function, respectively, corresponding to the optical signal. Advantageously, embodiments of the present invention improve overall back-to-back (i.e., source-to-destination) system performance, e.g., by improving dispersion tolerance and/or reducing optical power corresponding to a selected bit error rate value.

    摘要翻译： 一种适于处理在光通信系统中通过传输链路接收的光双二进制信号的光接收机。 在一个实施例中，接收机具有耦合到解码器的光电信号转换器。 解码器处理由转换器产生的电信号以产生对应于光信号的比特序列。 为了产生位值，解码器使用采样窗口对电信号进行积分，并将积分结果与判定阈值进行比较。 在一种配置中，分别基于对应于光信号的眼图和噪声分布函数来选择采样窗口的宽度和判定阈值。 有利地，本发明的实施例例如通过改善对应于所选位错误率值的色散容限和/或减少光功率来改进整体背靠背（即源到目的地）系统性能。

    Duobinary receiver
    9.
    发明申请
    Duobinary receiver 有权
    二元接收器

    公开(公告)号：US20050123068A1

    公开(公告)日：2005-06-09

    申请号：US10730413

    申请日：2003-12-08

    申请人： Xiang Liu ,  Lothar Benedict Josef Moeller ,  Xing Wei ,  Chongjin Xie

    发明人： Xiang Liu ,  Lothar Benedict Josef Moeller ,  Xing Wei ,  Chongjin Xie

    IPC分类号： H04L25/497 ,  H03M5/18 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14 ,  H04B10/142 ,  H04B10/152 ,  H04B10/155 ,  H04B10/158 ,  H04B10/26 ,  H04B10/28 ,  H04L7/04 ,  H04L25/06 ,  H04L25/49

    CPC分类号： H04L25/068 ,  H04B10/69 ,  H04L7/042 ,  H04L25/4923

    摘要： An optical receiver adapted to process an optical duobinary signal received over a transmission link in an optical communication system. In one embodiment, the receiver has an optical-to-electrical signal converter coupled to a decoder. The decoder processes an electrical signal generated by the converter to generate a bit sequence corresponding to the optical signal. To generate a bit value, the decoder integrates the electrical signal using a sampling window and compares the integration result with a decision threshold value. In one configuration, the width of the sampling window and the decision threshold value are selected based on the eye diagram and noise distribution function, respectively, corresponding to the optical signal. Advantageously, embodiments of the present invention improve overall back-to-back (i.e., source-to-destination) system performance, e.g., by improving dispersion tolerance and/or reducing optical power corresponding to a selected bit error rate value.

    摘要翻译： 一种适于处理在光通信系统中通过传输链路接收的光双二进制信号的光接收机。 在一个实施例中，接收机具有耦合到解码器的光电信号转换器。 解码器处理由转换器产生的电信号以产生对应于光信号的比特序列。 为了产生位值，解码器使用采样窗口对电信号进行积分，并将积分结果与判定阈值进行比较。 在一种配置中，分别基于对应于光信号的眼图和噪声分布函数来选择采样窗口的宽度和判定阈值。 有利地，本发明的实施例例如通过改善对应于所选位错误率值的色散容限和/或减少光功率来改进整体背靠背（即源到目的地）系统性能。