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1. 发明授权

US6043914A Dense WDM in the 1310 nm band 失效
标题翻译： 1310 nm波段的密集WDM
公开(公告)号：US6043914A
公开(公告)日：2000-03-28
申请号：US106725
申请日：1998-06-29
申请人： Joseph C. Cook , Xiaoping Charles Mao
发明人： Joseph C. Cook , Xiaoping Charles Mao
IPC分类号： H04B10/18 , H04J14/02
CPC分类号： H04B10/2513 , H04B10/25133 , H04J14/02 , H04B2210/258 , H04J14/0224
摘要： Dense wavelength division multiplexing within a 1310 nm band is accomplished over a single mode fiber. Carrier wavelengths are selected from within two windows, a low subband and/or a high subband, on either side of a guardband. The guardband includes the zero dispersion wavelength .lambda..sub.0 of a single-mode fiber in the optical communication link and separates low subband and high subband within the 1310 nm band. Dispersion compensation is provided for carrier signals in each dense WDM channel in the low and high subbands.
摘要翻译：在1310nm波段内的密集波分复用通过单模光纤实现。载波波长从保护带两侧的两个窗口内选择，一个低子带和/或一个高子带。保护带包括光通信链路中的单模光纤的零色散波长λ0，并且在1310nm波段内分离低子带和高子带。在低和高子带中的每个密集WDM信道中为载波信号提供色散补偿。

2. 发明授权

US06396606B1 Method of avoiding excessive polarization mode dispersion in an optical communications link 有权
标题翻译：避免光通信链路过度偏振模色散的方法
公开(公告)号：US06396606B1
公开(公告)日：2002-05-28
申请号：US09220732
申请日：1998-12-24
申请人： Xiaoping Charles Mao
发明人： Xiaoping Charles Mao
IPC分类号： H04B1000
CPC分类号： H04B10/2569
摘要： A method and apparatus for managing state-of-polarization (SOP) controllers along an optical communications link. When the polarization-mode dispersion (PMD) in the link exceeds a preset limit as determined by a PMD compensator, the SOP controller is directed to change rotation angle in an arbitrary fashion. This shift is only undertaken after other indicators are examined to determine that PMD is the main problem affecting the link, and not simply a consequence of a separate problem that the SOP controller rotation angle should not try to fix. By reducing unnecessary SOP adjustments which can disrupt data traffic, the reliability of the optical link is improved.
摘要翻译：一种用于沿光通信链路管理偏振态（SOP）控制器的方法和装置。当链路中的偏振模色散（PMD）超过由PMD补偿器确定的预设极限时，SOP控制器被以任意方式改变旋转角度。这种转变仅在其他指标被检查以确定PMD是影响链路的主要问题之后进行，而不仅仅是SOP控制器旋转角度不应该修复的单独问题的结果。通过减少可能中断数据流量的不必要的SOP调整，提高了光链路的可靠性。

3. 发明授权

US5689594A Multiple wavelength bidirectional lightwave amplifier 失效
标题翻译：多波长双向光波放大器
公开(公告)号：US5689594A
公开(公告)日：1997-11-18
申请号：US769201
申请日：1996-12-18
申请人： Xiaoping Charles Mao
发明人： Xiaoping Charles Mao
IPC分类号： H04B10/08 , H04B10/17 , H04B10/24 , H04J14/02 , G02B6/28
CPC分类号： H04B10/2971 , H04B10/077 , H04B10/07955 , H04B10/2503 , H04B10/2912 , H04J14/0221
摘要： A system and method for optimizing the performance, in a multichannel optical transmission system, of an optical signal regenerator, by compensating for input signal power fluctuation and for output signal gain change, and by mildly filtering individual wavelengths between gain block stages. A system and method to provide amplification and refinement of a bidirectional optical signal in a single amplification and refinement stage.
摘要翻译：一种用于通过补偿输入信号功率波动和输出信号增益变化以及通过在增益块级之间轻微过滤各个波长来优化光信号再生器在多通道光传输系统中的性能的系统和方法。一种用于在单个放大和细化阶段中提供双向光信号的放大和细化的系统和方法。

4. 发明授权

US06704510B2 PMD characterization across multiple optical channels of an optical link 有权
标题翻译：光链路的多个光信道的PMD表征
公开(公告)号：US06704510B2
公开(公告)日：2004-03-09
申请号：US09993644
申请日：2001-11-27
申请人： Andrew Niall Robinson , Xiaoping Charles Mao
发明人： Andrew Niall Robinson , Xiaoping Charles Mao
IPC分类号： H04J1402
CPC分类号： H04B10/2569
摘要： A fiber optic communications link having PMD characterization across multiple optical channels to identify PMD problems. The communications link has adaptive PMD controls employed along the optical link, whereby PMD phenomena detected by instruments, such as PMD compensators, are interpreted as being either attributable to perturbation of fiber characteristics at large, or by failure of PMD equipment along the link. The present invention avoids taking unnecessary control or maintenance actions upon PMD related controllers and compensators. PMD notifications from various PMD compensators are correlated to identify which portion of the link has undergone a change in polarization characteristics to further identify PMD related errors and problems.
摘要翻译：一种光纤通信链路，其具有跨多个光信道的PMD表征以识别PMD问题。通信链路具有沿着光学链路采用的自适应PMD控制，由PMD补偿器等仪器检测到的PMD现象被解释为可能归因于光纤特性的大幅度扰动，或者是沿着链路的PMD设备的故障。本发明避免了对PMD相关控制器和补偿器的不必要的控制或维护动作。来自各种PMD补偿器的PMD通知被相关联以识别链路的哪个部分已经经历了偏振特性的变化，以进一步识别PMD相关的误差和问题。

5. 发明授权

US06681081B2 Method of avoiding excessive polarization mode dispersion in an optical communications link 有权
标题翻译：避免光通信链路过度偏振模色散的方法
公开(公告)号：US06681081B2
公开(公告)日：2004-01-20
申请号：US10093638
申请日：2002-03-11
申请人： Xiaoping Charles Mao
发明人： Xiaoping Charles Mao
IPC分类号： H04B1000
CPC分类号： H04B10/2569
摘要： A method and apparatus for managing state-of-polarization (SOP) controllers along an optical communications link. When the polarization-mode dispersion (PMD) in the link exceeds a preset limit as determined by a PMD compensator, the SOP controller is directed to change rotation angle in an arbitrary fashion. This shift is only undertaken after other indicators are examined to determine that PMD is the main problem affecting the link, and not simply a consequence of a separate problem that the SOP controller rotation angle should not try to fix. By reducing unnecessary SOP adjustments which can disrupt data traffic, the reliability of the optical link is improved.
摘要翻译：一种用于沿光通信链路管理偏振态（SOP）控制器的方法和装置。当链路中的偏振模色散（PMD）超过由PMD补偿器确定的预设极限时，SOP控制器被以任意方式改变旋转角度。这种转变仅在其他指标被检查以确定PMD是影响链路的主要问题之后进行，而不仅仅是SOP控制器旋转角度不应该修复的单独问题的结果。通过减少可能中断数据流量的不必要的SOP调整，提高了光链路的可靠性。

6. 发明授权

US06493116B1 PMD characterization across multiple optical channels of an optical link 有权
标题翻译：光链路的多个光通道的PMD表征
公开(公告)号：US06493116B1
公开(公告)日：2002-12-10
申请号：US09248521
申请日：1999-02-09
申请人： Andrew Niall Robinson , Xiaoping Charles Mao
发明人： Andrew Niall Robinson , Xiaoping Charles Mao
IPC分类号： H04B1008
CPC分类号： H04B10/2569
摘要： A fiber optic communications link having PMD characterization across multiple optical channels to identify PMD problems. The communications link has adaptive PMD controls employed along the optical link, whereby PMD phenomena detected by instruments, such as PMD compensators, are interpreted as being either attributable to perturbation of fiber characteristics at large, or by failure of PMD equipment along the link. The present invention avoids taking unnecessary control or maintenance actions upon PMD related controllers and compensators. PMD notifications from various PMD compensators are correlated to identify which portion of the link has undergone a change in polarization characteristics to further identify PMD related errors and problems.
摘要翻译：一种光纤通信链路，其具有跨多个光信道的PMD表征以识别PMD问题。通信链路具有沿着光学链路采用的自适应PMD控制，由PMD补偿器等仪器检测到的PMD现象被解释为可能归因于光纤特性的大幅度扰动，或者是沿着链路的PMD设备的故障。本发明避免了对PMD相关控制器和补偿器的不必要的控制或维护动作。来自各种PMD补偿器的PMD通知被相关联以识别链路的哪个部分已经经历了偏振特性的变化，以进一步识别PMD相关的误差和问题。

7. 发明授权

US5926590A Power equalizer in a multiple wavelength bidirectional lightwave amplifier 失效
标题翻译：功率均衡器在多波长双向光波放大器中
公开(公告)号：US5926590A
公开(公告)日：1999-07-20
申请号：US947678
申请日：1997-10-24
申请人： Xiaoping Charles Mao
发明人： Xiaoping Charles Mao
IPC分类号： G02F1/01 , G02B6/293 , H01S3/06 , H01S3/10 , H04B10/08 , H04B10/16 , H04B10/17 , H04B10/24 , H04J14/00 , H04J14/02 , G02B6/28
CPC分类号： H04B10/2971 , H04B10/077 , H04B10/07955 , H04B10/2503 , H04B10/2912 , H04J14/0221
摘要： A system and method for optimizing the performance, in a multichannel optical transmission system, of an optical signal regenerator, by compensating for input signal power fluctuation and for output signal gain change, and by mildly filtering individual wavelengths between gain block stages. A system and method to provide amplification and refinement of a bidirectional optical signal in a single amplification and refinement stage.
摘要翻译：一种用于通过补偿输入信号功率波动和输出信号增益变化以及通过在增益块级之间轻微过滤各个波长来优化光信号再生器在多通道光传输系统中的性能的系统和方法。一种用于在单个放大和细化阶段中提供双向光信号的放大和细化的系统和方法。

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