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1. 发明授权

US07613402B2 Duobinary receiver 有权
标题翻译：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。

2. 发明授权

US07609976B2 Method and system for ultra-high bit rate fiber-optic communications 有权
标题翻译：超高比特率光纤通信的方法和系统
公开(公告)号：US07609976B2
公开(公告)日：2009-10-27
申请号：US11239656
申请日：2005-09-29
申请人： Xiang Liu , Lothar Benedict Erhard Josef Moeller , Yikai Su , Chongjin Xie
发明人： Xiang Liu , Lothar Benedict Erhard Josef Moeller , Yikai Su , Chongjin Xie
IPC分类号： H04B10/04
CPC分类号： H04B10/5165 , H04B10/505 , H04B10/5162 , H04B10/5167 , H04L7/0075 , H04L7/027
摘要： A method and system for ultra-high bit rate fiber-optic communications (e.g., 160 Gb/s) utilize a phase-correlated modulation format where phases of bits in adjacent four-bit groups in transmitted optical pulse trains are altered by π (or 180°).
摘要翻译：用于超高比特率光纤通信（例如，160Gb / s）的方法和系统利用相位相关调制格式，其中传输的光脉冲串中的相邻四比特组中的比特的相位被pi（或 180°）。

3. 发明申请

US20050123068A1 Duobinary receiver 有权
标题翻译：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。

4. 发明申请

US20070071454A1 Method and system for ultra-high bit rate fiber-optic communications 有权
标题翻译：超高比特率光纤通信的方法和系统
公开(公告)号：US20070071454A1
公开(公告)日：2007-03-29
申请号：US11239656
申请日：2005-09-29
申请人： Xiang Liu , Lothar Benedict Josef Moeller , Yikai Su , Chongjin Xie
发明人： Xiang Liu , Lothar Benedict Josef Moeller , Yikai Su , Chongjin Xie
IPC分类号： H04B10/04
CPC分类号： H04B10/5165 , H04B10/505 , H04B10/5162 , H04B10/5167 , H04L7/0075 , H04L7/027
摘要： A method and system for ultra-high bit rate fiber-optic communications (e.g., 160 Gb/s) utilize a phase-correlated modulation format where phases of bits in adjacent four-bit groups in transmitted optical pulse trains are altered by π (or 180°).
摘要翻译：用于超高比特率光纤通信（例如，160Gb / s）的方法和系统利用相位相关调制格式，其中传输的光脉冲串中的相邻四比特组中的比特的相位被pi（或 180°）。

5. 发明授权

US07330663B2 PMD-reduction processing for a multi-channel receiver 有权
标题翻译：用于多通道接收机的PMD减少处理
公开(公告)号：US07330663B2
公开(公告)日：2008-02-12
申请号：US10425432
申请日：2003-04-29
申请人： Randy C. Giles , Xiang Liu , Chongjin Xie
发明人： Randy C. Giles , Xiang Liu , Chongjin Xie
IPC分类号： H04B10/12
CPC分类号： H04B10/2569 , H04J14/02
摘要： A multi-channel (e.g. WDM) receiver, in which l PMD compensators are time-shared by n (n>1) communication channels, where 1≦l≦n−1. The receiver implements PMD monitoring to identify channels exhibiting relatively high amounts of PMD. Some or all of the identified channels are then subjected, before decoding, to PMD-reduction processing, while the remaining channels are decoded without such processing. Channel allocation for the processing may be changed dynamically depending on the current amounts of PMD exhibited by various channels. Due to efficient utilization of PMD compensators, multi-channel receivers of the invention are capable of performance comparable to that of the corresponding fully compensated (i.e., having a dedicated PMD compensator for each channel) receivers, but at appreciably lower cost.
摘要翻译：多通道（例如WDM）接收机，其中1个PMD补偿器由n（n> 1）个通信信道共享，其中1≤l≤n-1。接收机实现PMD监测，以识别显示相对较高量的PMD的信道。然后在解码之前将所识别的一些或全部信道进行PMD减少处理，而在不进行这种处理的情况下对其余信道进行解码。用于处理的信道分配可以根据各种信道所呈现的PMD的当前量而动态地改变。由于PMD补偿器的有效利用，本发明的多通道接收机能够与相应的完全补偿（即，具有用于每个通道的专用PMD补偿器）接收机的性能相当，但成本明显较低。

6. 发明授权

US07010180B2 System and method for multi-channel mitigation of PMD/PDL/PDG 有权
标题翻译： PMD / PDL / PDG的多通道缓解系统和方法
公开(公告)号：US07010180B2
公开(公告)日：2006-03-07
申请号：US10639824
申请日：2003-08-13
申请人： Adriaan J. de Lind van Wijngaarden , Xiang Liu , Chongjin Xie
发明人： Adriaan J. de Lind van Wijngaarden , Xiang Liu , Chongjin Xie
IPC分类号： G02B6/00
CPC分类号： H04B10/2569 , H04B2210/256
摘要： A system and method for multi-channel PMD/PDL/PDG mitigation, the system including polarization scramblers adapted to vary the state of polarization of an optical signal propagated through the system to effectively vary the polarization mode dispersion experienced by the signal during each burst-error-correcting-period of the forward error correction used in the system.
摘要翻译：一种用于多通道PMD / PDL / PDG减轻的系统和方法，所述系统包括偏振加扰器，其适于改变通过系统传播的光信号的偏振状态，以有效地改变在每个突发脉冲期间由信号经历的偏振模色散，系统中使用的前向纠错误差校正周期。

7. 发明申请

US20050036727A1 System and method for multi-channel mitigation of PMD/PDL/PDG 有权
标题翻译： PMD / PDL / PDG的多通道缓解系统和方法
公开(公告)号：US20050036727A1
公开(公告)日：2005-02-17
申请号：US10639824
申请日：2003-08-13
申请人： Adriaan Wijngaarden , Xiang Liu , Chongjin Xie
发明人： Adriaan Wijngaarden , Xiang Liu , Chongjin Xie
IPC分类号： H04B10/02 , G02B6/27 , H04B10/18 , H04J14/00 , H04J14/02
CPC分类号： H04B10/2569 , H04B2210/256
摘要： A system and method for multi-channel PMD/PDL/PDG mitigation, the system including polarization scramblers adapted to vary the state of polarization of an optical signal propagated through the system to effectively vary the polarization mode dispersion experienced by the signal during each burst-error-correcting-period of the forward error correction used in the system.
摘要翻译：一种用于多通道PMD / PDL / PDG减轻的系统和方法，所述系统包括偏振加扰器，其适于改变通过系统传播的光信号的偏振状态，以有效地改变在每个突发脉冲期间由信号经历的偏振模色散，系统中使用的前向纠错误差校正周期。

8. 发明授权

US07277647B2 System and method of optical transmission 有权
标题翻译：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。

9. 发明授权

US07277645B2 High-bit-rate long-haul fiber optic communication system techniques and arrangements 有权
标题翻译：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。

10. 发明授权

US08045862B2 Optical communication method and apparatus 有权
标题翻译：光通信方法及装置
公开(公告)号：US08045862B2
公开(公告)日：2011-10-25
申请号：US10790434
申请日：2004-02-27
申请人： Xiang Liu , Yikai Su , Xing Wei
发明人： Xiang Liu , Yikai Su , Xing Wei
IPC分类号： H04B10/02
CPC分类号： H04B10/291 , H04B10/2914 , H04B2210/258
摘要： An optical amplification method and apparatus implemented using RZ-DPSK modulation or variants thereof and a deeply saturated semiconductor optical amplifier.
摘要翻译：使用RZ-DPSK调制或其变体和深饱和半导体光放大器实现的光放大方法和装置。

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