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1. 发明授权

US6016219A Optical protection switching system 有权
标题翻译：光保护切换系统
公开(公告)号：US6016219A
公开(公告)日：2000-01-18
申请号：US168267
申请日：1998-10-07
申请人： Mohammad T. Fatehi , Wayne Harvey Knox
发明人： Mohammad T. Fatehi , Wayne Harvey Knox
IPC分类号： H04B10/02 , H04B1/74 , H04B10/00 , H04Q11/00 , G02B6/26 , H01S3/00
CPC分类号： H04B10/032 , H04Q11/0005 , H04J14/0279 , H04J14/0294 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0039 , H04Q2011/0043 , H04Q2011/0047 , H04Q2011/0081 , H04Q2011/0083
摘要： An optical line protection switching system is realized by employing a plurality of rare earth-doped fiber optical amplifiers as gain-switched optical connections, for example gain-switched optical distributors, i.e., commutators, and/or gain-switched optical selectors in a gain switched optical line protection switching system. In one embodiment, at least one or more gain switched optical distributors are employed to realize so-called head-end switching of an incoming optical signal and one or more gain switched optical selectors are employed to realize so-called tail-end switching of the optical signal to form a 1.times.1 (1.times.N) optical line protection switching system. In another embodiment, an incoming optical signal is bridged to one or more optical paths, while the tail-end switching is realized by employing one or more gain-switched optical selectors to form a 1+1 (1+N) optical line protection switching system.
摘要翻译：通过采用多个稀土掺杂光纤放大器作为增益切换光学连接，例如增益切换光分配器，即换向器和/或增益开关光学选择器的增益来实现光线路保护开关系统交换光线路保护倒换系统。在一个实施例中，采用至少一个或多个增益切换光分配器来实现进入的光信号的所谓的头端切换，并且采用一个或多个增益交换光选择器来实现所谓的后端切换光信号形成1x1（1xN）光线路保护倒换系统。在另一个实施例中，输入光信号被桥接到一个或多个光路，而尾端切换通过采用一个或多个增益切换光学选择器来实现，以形成1 + 1（1 + N）个光线路保护切换系统。

2. 发明授权

US5959767A Loss-less optical cross-connect 失效
标题翻译：无损光学交叉连接
公开(公告)号：US5959767A
公开(公告)日：1999-09-28
申请号：US777890
申请日：1996-12-31
申请人： Mohammad T. Fatehi , Wayne Harvey Knox
发明人： Mohammad T. Fatehi , Wayne Harvey Knox
IPC分类号： G02B6/00 , H01S3/06 , H01S3/10 , H04B10/02 , H04Q11/00 , H04J14/00
CPC分类号： H04Q11/0005 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0018 , H04Q2011/0039 , H04Q2011/0047 , H04Q2011/0052 , H04Q2011/0083
摘要： A loss-less optical cross-connect advantageously employs a plurality of optical rare earth-doped fiber optical amplifiers as gain-switched optical connections, for example, gain-switched optical distributors and gain-switched optical selectors. Each of the optical rare earth-doped fiber optical amplifiers acts as an ON/OFF switch. Also, both the gain-switched optical distributors and selectors employed in the optical cross-connect arrangement of this invention are a natural fit into today's optically amplified optical communication systems. In one embodiment, this is realized by employing a pump select circuit in conjunction with a plurality of pumps and the plurality of corresponding rare earth-doped fiber optical amplifiers. The particular pump and corresponding optical amplifier are selected by use of a control circuit arrangement to determine which output port or ports is (are) connected to the input port. The rare earth-doped fiber optical amplifiers and the corresponding pumps are employed advantageously for both the gain-switched optical distributors and the gain-switched optical selectors. In another embodiment, a so-called tuned pump arrangement is employed in conjunction with a plurality of filters and a corresponding plurality of rare earth-doped fiber optical amplifiers. A pump tuning arrangement is employed to control the tunable pump in order to select the appropriate one of a plurality of optical amplifiers to be activated, thus routing the input signals at any of a plurality of given wavelengths to the corresponding output line (or lines if broadcasting capability is employed). Again, the rare earth-doped fiber optical amplifiers and the corresponding pumps are employed advantageously for both the gain-switched optical distributors and the gain-switched optical selectors.
摘要翻译：无损光学交叉连接有利地使用多个光稀土掺杂光纤放大器作为增益切换光学连接，例如增益开关光分配器和增益开关光学选择器。每个光稀土掺杂光纤放大器用作ON / OFF开关。此外，本发明的光学交叉连接装置中采用的增益开关光分配器和选择器都是天然适合当今光学放大的光通信系统。在一个实施例中，这通过结合多个泵和多个对应的稀土掺杂光纤放大器采用泵选择电路来实现。通过使用控制电路装置来选择特定的泵和相应的光放大器，以确定哪个输出端口连接到输入端口。稀土掺杂光纤放大器和对应的泵有利地用于增益开关光分配器和增益开关光学选择器。在另一个实施例中，所谓的调谐泵装置与多个滤波器和相应的多个稀土掺杂光纤放大器结合使用。采用泵调谐装置来控制可调谐泵，以便选择要激活的多个光放大器中适当的一个，从而将多个给定波长中的任何一个的输入信号路由到相应的输出线（或者，如果广播能力）。再次，稀土掺杂光纤放大器和相应的泵有利地用于增益开关光分配器和增益开关光学选择器。

3. 发明授权

US5930013A Optical switched selector 失效
标题翻译：光开关选择器
公开(公告)号：US5930013A
公开(公告)日：1999-07-27
申请号：US777891
申请日：1996-12-31
申请人： Mohammad T. Fatehi , Wayne Harvey Knox
发明人： Mohammad T. Fatehi , Wayne Harvey Knox
IPC分类号： G02B6/00 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/10 , H04Q11/00 , H04J14/00
CPC分类号： H01S3/094003 , H04Q11/0005 , H01S3/06754 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0018
摘要： A gain-switched optical selector is realized by employing an optical rare earth-doped fiber optical amplifier as the switching element per se. Each of the optical rare earth-doped optical amplifiers acts as an ON/OFF switch. Also, the gain-switched optical selector of this invention is a natural fit into today's optically amplified optical communication systems. In one embodiment, this is realized by employing a pump select circuit in conjunction with a plurality of pumps and a plurality of corresponding rare earth-doped fiber optical amplifiers. The particular pump and corresponding optical amplifier are selected by use of a monitor arrangement to determine which signal is to be selected and routed to an output. In another embodiment, a so-called tuned pump arrangement is employed in conjunction with a plurality of filters and a corresponding plurality of rare earth-doped fiber optical amplifiers. A pump tuning arrangement is employed to control the tunable pump in order to select the appropriate one of a plurality of optical input signals at any of a plurality of given wavelengths.
摘要翻译：增益开关光选择器通过采用光稀土掺杂光纤放大器作为开关元件本身实现。每个光学稀土掺杂光放大器用作ON / OFF开关。此外，本发明的增益切换光学选择器是当今光学放大的光通信系统中的天然适配。在一个实施例中，这通过结合多个泵和多个对应的稀土掺杂光纤放大器采用泵选择电路来实现。通过使用监视装置来选择特定的泵和对应的光放大器，以确定哪个信号被选择并被路由到输出。在另一个实施例中，所谓的调谐泵装置与多个滤波器和相应的多个稀土掺杂光纤放大器结合使用。采用泵调谐装置来控制可调谐泵，以便以多个给定波长中的任何一个选择多个光输入信号中适当的一个。

4. 发明授权

US5815613A Optical switched distributor 失效
标题翻译：光交换分配器
公开(公告)号：US5815613A
公开(公告)日：1998-09-29
申请号：US777894
申请日：1996-12-31
申请人： Mohammad T. Fatehi , Wayne Harvey Knox
发明人： Mohammad T. Fatehi , Wayne Harvey Knox
IPC分类号： G02B6/00 , G02B6/122 , G02B6/35 , H01S3/06 , H01S3/07 , H01S3/10 , H04Q11/00 , G02B6/26
CPC分类号： H04Q11/0001
摘要： A gain-switched optical distributor, i.e., commutator, is realized by employing an optical rare earth-doped fiber optical amplifier as the switching element per se. Each of the optical rare earth-doped fiber optical amplifiers acts as an ON/OFF switch. Also, the gain-switched optical distributor of this invention is a natural fit into today's optically amplified optical communication systems. In one embodiment, this is realized by employing a pump select circuit in conjunction with a plurality of pumps and a plurality of corresponding rare earth-doped fiber optical amplifiers. The particular pump and corresponding amplifier is selected by use of a monitor arrangement to determine which signal is to be selected and routed to an output. In another embodiment, a so-called tuned pump arrangement is employed in conjunction with a plurality of filters and a corresponding plurality of rare earth-doped fiber optical amplifiers. A pump tuning arrangement is employed to control the tunable pump in order to select the appropriate one of a plurality of optical input signals at any of a plurality of given wavelengths.
摘要翻译：通过采用光稀土掺杂光纤放大器作为开关元件本身，实现增益开关光分配器即换向器。每个光稀土掺杂光纤放大器用作ON / OFF开关。此外，本发明的增益切换光分配器是当今光放大光通信系统中的天然适配。在一个实施例中，这通过结合多个泵和多个对应的稀土掺杂光纤放大器采用泵选择电路来实现。通过使用监视装置来选择特定的泵和相应的放大器，以确定哪个信号被选择并被路由到输出。在另一个实施例中，所谓的调谐泵装置与多个滤波器和相应的多个稀土掺杂光纤放大器结合使用。采用泵调谐装置来控制可调谐泵，以便以多个给定波长中的任何一个选择多个光输入信号中适当的一个。

5. 发明授权

US5889610A Optical protection switching system 失效
公开(公告)号：US5889610A
公开(公告)日：1999-03-30
申请号：US777892
申请日：1996-12-31
申请人： Mohammad T. Fatehi , Wayne Harvey Knox
发明人： Mohammad T. Fatehi , Wayne Harvey Knox
IPC分类号： H04B10/02 , H04B1/74 , H04B10/00 , H04Q11/00 , H01S3/00 , G02B6/26 , G02F3/00
CPC分类号： H04B10/032 , H04Q11/0005 , H04J14/0279 , H04J14/0294 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0039 , H04Q2011/0043 , H04Q2011/0047 , H04Q2011/0081 , H04Q2011/0083
摘要： An optical line protection switching system is realized by employing a plurality of rare earth-doped fiber optical amplifiers as gain-switched optical connections, for example gain-switched optical distributors, i.e., commutators, and/or gain-switched optical selectors in a gain switched optical line protection switching system. In one embodiment, at least one or more gain switched optical distributors are employed to realize so-called head-end switching of an incoming optical signal and one or more gain switched optical selectors are employed to realize so-called tail-end switching of the optical signal to form a 1.times.1 (1.times.N) optical line protection switching system. In another embodiment, an incoming optical signal is bridged to one or more optical paths, while the tail-end switching is realized by employing one or more gain-switched optical selectors to form a 1+1 (1+N) optical line protection switching system.

6. 发明授权

US6141127A High capacity chirped-pulse wavelength-division multiplexed communication method and apparatus 失效
标题翻译：高容量啁啾脉冲波分复用通信方法和装置
公开(公告)号：US6141127A
公开(公告)日：2000-10-31
申请号：US27055
申请日：1998-02-20
申请人： Luc Boivin , Wayne Harvey Knox , Martin C. Nuss , Jason Blain Stark
发明人： Luc Boivin , Wayne Harvey Knox , Martin C. Nuss , Jason Blain Stark
IPC分类号： H04J14/08 , H04B10/02 , H04B10/155 , H04J14/00 , H04J14/02
CPC分类号： H04J14/02 , H04B10/505 , H04B10/50595 , H04B10/506 , H04B10/508 , H01S3/0057 , H01S3/0085 , H01S3/06754 , H01S3/2383
摘要： A high-capacity, chirped-pulse wavelength-division multiplexed communications apparatus and method in which a chirped-pulse, wavelength-division multiplexed signal is further optically multiplexed thereby enhancing bit rates per channel. A multifrequency optical source for supplying an optical signal having a number of wavelength division multiplexed (WDM) channels; a power splitter for splitting the optical signal from the multifrequency source into a number of signals; a number of time delay lines, for delaying each one of the signals independently; a number of data encoding modulators for modulating each one of the delayed signals; and a power combiner for combining the number of delayed, modulated signals into a single signal such that the multifrequency optical source signal is multiplexed by a desired amount.
摘要翻译：大容量啁啾脉冲波分复用通信装置和方法，其中啁啾脉冲波分复用信号进一步光学多路复用，从而提高每个信道的比特率。一种用于提供具有多个波分复用（WDM）信道的光信号的多频光源; 功率分配器，用于将来自多频源的光信号分离成多个信号; 多个时间延迟线，用于独立地延迟每个信号; 用于调制延迟信号中的每一个的多个数据编码调制器; 以及功率合成器，用于将延迟的调制信号的数量组合成单个信号，使得多频光源信号被多路复用期望的量。

7. 发明授权

US07024111B2 Dynamic measurement of and compensation for impairments to optical data communication pulses using photon-counting silicon avalanche photodiode 失效
标题翻译：使用光子计数硅雪崩光电二极管对光数据通信脉冲的损伤进行动态测量和补偿
公开(公告)号：US07024111B2
公开(公告)日：2006-04-04
申请号：US10099180
申请日：2002-03-16
申请人： Wayne Harvey Knox , Jeffrey M. Roth , Chunhui Xu
发明人： Wayne Harvey Knox , Jeffrey M. Roth , Chunhui Xu
IPC分类号： H04B10/08
CPC分类号： H04B10/2569 , H04B10/079
摘要： Apparatus and method is described for using a silicon photon-counting avalanche photodiode (APD) to detect at least two-photon absorption (TPA) of an optical signal, the optical signal having a wavelength range extending from 1.2 μm to an upper wavelength region that increases as the number of photons simultaneously absorbed by the APD increases beyond two. In one embodiment, the TPA count is used by a signal compensation apparatus to reduce dispersion of a received optical pulse communication signal subjected to group velocity dispersion, polarization mode dispersion, or other signal impairment phenomena which effect the TPA count. Another embodiment, the TPA count is used to determine the optical signal-to-noise ratio of a received optical pulse communication signal. Another embodiment uses the TPA count to determine the autocorrelation between a first and second optical pulse signals as a function of the relative delay between the first and second optical pulse signals. Another embodiment uses the TPA count to achieve synchronization of a second optical pulse signal to a first optical pulse signal.
摘要翻译：描述了使用硅光子计数雪崩光电二极管（APD）来检测光信号的至少双光子吸收（TPA）的装置和方法，该光信号具有从1.2μm延伸到上波长区的波长范围，随着APD同时吸收的光子数量增加超过两倍而增加。在一个实施例中，TPA计数由信号补偿装置使用，以减少受到组速度色散，偏振模色散或影响TPA计数的其他信号损害现象的接收光脉冲通信信号的色散。另一实施例中，TPA计数用于确定接收到的光脉冲通信信号的光信噪比。另一实施例使用TPA计数来确定作为第一和第二光脉冲信号之间的相对延迟的函数的第一和第二光脉冲信号之间的自相关。另一实施例使用TPA计数来实现第二光脉冲信号与第一光脉冲信号的同步。

8. 发明授权

US6067389A Wavelength-selective optical cross-connect 失效
标题翻译：波长选择光交叉连接
公开(公告)号：US6067389A
公开(公告)日：2000-05-23
申请号：US123085
申请日：1998-07-27
申请人： Mohammad Taghi Fatehi , Wayne Harvey Knox
发明人： Mohammad Taghi Fatehi , Wayne Harvey Knox
IPC分类号： H04B10/02 , G02B6/293 , G02B6/34 , G02B6/35 , G02F1/313 , H04Q3/52 , H04Q11/00 , G02B6/26
CPC分类号： H04Q11/0005 , G02B6/2932 , G02B6/29322 , G02F1/3131 , G02F2201/307 , G02F2203/055 , H04Q2011/0022 , H04Q2011/0035
摘要： An optical switch includes an optical router portion for distributing multi-wavelength optical signals received at input ports of the switch, an optical combiner portion for supplying multi-wavelength signals at the output ports of the switch, and optical fibers for interconnecting the optical router portion and optical combiner portion. Selected ones of the interconnecting optical fibers include wavelength-selective elements, such as fiber gratings, which are capable of transmitting or reflecting individual channels within the multi-wavelength optical signal so that a selected channel of a particular wavelength can be routed from any of the input ports to any of the output ports of the switch. In one exemplary embodiment, the optical router portion includes a plurality of input optical couplers, wherein each input optical coupler is associated with a corresponding input port of the optical switch. Similarly, the optical combiner portion includes a plurality of output optical couplers, wherein each output optical coupler is associated with a corresponding output port of the optical switch. Each input optical coupler together with its associated fiber gratings on the interconnecting optical fibers is used for distributing the signals received via the input ports while each output optical coupler together with its associated fiber gratings is used for combining the signals to be supplied at the output ports of the switch.
摘要翻译：一种光学开关包括用于分配在开关的输入端口处接收的多波长光信号的光路由器部分，用于在开关的输出端口处提供多波长信号的光合成器部分，以及用于互连光路由器部分和光组合器部分。互连光纤中的选定的光纤包括诸如光纤光栅的波长选择元件，其能够传输或反射多波长光信号内的各个通道，使得特定波长的所选通道可以从输入端口到交换机的任何输出端口。在一个示例性实施例中，光路由器部分包括多个输入光耦合器，其中每个输入光耦合器与光开关的对应输入端口相关联。类似地，光组合器部分包括多个输出光耦合器，其中每个输出光耦合器与光开关的对应输出端口相关联。每个输入光耦合器和互连光纤上的相关联的光纤光栅用于分配经由输入端口接收的信号，而每个输出光耦合器及其相关联的光纤光栅用于组合要在输出端口处提供的信号的开关。

9. 发明授权

US06392769B1 Automatic level control circuit for optical system 有权
标题翻译：光学系统自动电平控制电路
公开(公告)号：US06392769B1
公开(公告)日：2002-05-21
申请号：US09272976
申请日：1999-03-19
申请人： Joseph Earl Ford , Wayne Harvey Knox
发明人： Joseph Earl Ford , Wayne Harvey Knox
IPC分类号： H04B1008
CPC分类号： H04B10/07 , H04B10/2942
摘要： Feedback instabilities arising from interactions between automatic control loops at the amplifier nodes of an optical network are eliminated by restricting operation to a single amplifier node at a time. Amplifier node activation is accomplished using a global control signal which is sequentially passed from an upstream node through all of the nodes of the system. By controlling the state of the global control signal, an upstream node has operational priority over downstream nodes.
摘要翻译：通过将操作一次限制到单个放大器节点来消除由光网络的放大器节点处的自动控制回路之间的相互作用产生的反馈不稳定性。使用从上游节点依次通过系统的所有节点依次传递的全局控制信号来实现放大器节点激活。通过控制全局控制信号的状态，上游节点具有比下游节点更高的运行优先级。

10. 发明授权

US6002513A Optical modulator providing independent control of attenuation and spectral tilt 失效
标题翻译：提供独立的衰减和光谱倾斜控制的光学调制器
公开(公告)号：US6002513A
公开(公告)日：1999-12-14
申请号：US102514
申请日：1998-06-22
申请人： Keith Wayne Goossen , Wayne Harvey Knox
发明人： Keith Wayne Goossen , Wayne Harvey Knox
IPC分类号： G02B6/26 , G02B6/34 , G02B6/35 , G02B6/38 , G02B26/00 , G02B26/02 , H04J14/02 , G02B26/08
CPC分类号： G02B26/02 , G02B26/001 , G02B6/264 , G02B6/266 , G02B6/3833 , H04J14/02
摘要： An optical modulator comprises at least two optically coupled MARS modulators, at least one having positive spectral tilt and at least one having negative spectral tilt. Both tilt and attenuation can be independently controlled by adjusting the air gaps of the constituent modulators. Preferred designs present linear spectral tilt.
摘要翻译：光学调制器包括至少两个光学耦合的MARS调制器，至少一个具有正的频谱倾斜和至少一个具有负的谱倾斜。倾斜和衰减都可以通过调节组分调节剂的气隙来独立控制。优选的设计呈现线性光谱倾斜。

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