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1. 发明授权

US06643422B2 Optical switch changeover controlling method, optical node device and optical switch system 有权
公开(公告)号：US06643422B2
公开(公告)日：2003-11-04
申请号：US09797731
申请日：2001-03-05
申请人： Toru Katagiri , Satoshi Kuroyanagi , Tetsuya Nishi , Ichiro Nakajima , Takuji Maeda
发明人： Toru Katagiri , Satoshi Kuroyanagi , Tetsuya Nishi , Ichiro Nakajima , Takuji Maeda
IPC分类号： G02B635
CPC分类号： H04Q11/0005 , H04J14/0283 , H04J14/0295 , H04Q2011/0035 , H04Q2011/0049 , H04Q2011/0058 , H04Q2011/0081
摘要： The present invention aims at providing an optical switch changeover controlling method, an optical node device and an optical switch system, capable of avoiding an interruption in an optical output power when changing over an optical path making use of a spatial optical switch arranged with a plurality of optical switch elements. To this end, the optical switch changeover controlling method according to the present invention enables an uninterrupted changeover of an optical path by conducting a reconnection of the optical path after establishing a state where the optical path before the changeover and the optical path after the changeover are simultaneously set concerning the spatial optical switch within the optical node device, when conducting a changeover of the optical path so as to transmit a client optical signal having been transmitted through a working ray path to a protective ray path such as in a case that a fault occurs in the working ray path.

2. 发明授权

US06741811B2 Optical cross-connect device and system having the device 失效
标题翻译：具有该装置的光交叉连接装置和系统
公开(公告)号：US06741811B2
公开(公告)日：2004-05-25
申请号：US09813951
申请日：2001-03-22
申请人： Tetsuya Nishi , Satoshi Kuroyanagi , Ichiro Nakajima , Takuji Maeda , Toru Katagiri
发明人： Tetsuya Nishi , Satoshi Kuroyanagi , Ichiro Nakajima , Takuji Maeda , Toru Katagiri
IPC分类号： H04J1400
CPC分类号： H04J14/0213 , H04J14/0212 , H04Q11/0005 , H04Q2011/0011 , H04Q2011/0016 , H04Q2011/0033 , H04Q2011/0075
摘要： Disclosed herein is an optical cross-connect device including first wavelength demultiplexing sections each for demultiplexing WDM (wavelength division multiplexed) signal light into a plurality of optical signals, wavelength group generating sections each for receiving the optical signals from each first wavelength demultiplexing section to generate wavelength groups, first wavelength multiplexing sections each for receiving each wavelength group from each wavelength group generating section to output a WDM wavelength group, a routing section for routing the input WDM wavelength groups, second wavelength demultiplexing sections each for receiving each WDM wavelength group from the routing section to output a wavelength group having a plurality of wavelengths, wavelength converting sections each for performing wavelength conversion of each optical signal of the wavelength group output from each second wavelength demultiplexing section, and second wavelength multiplexing sections each for wavelength division multiplexing optical signals output from the wavelength converting sections. This device is suitable for construction of a large-scale optical network supporting an increase in number of wavelengths.
摘要翻译：本发明公开了一种光交叉连接装置，包括：第一波长解复用部分，用于将WDM（波分复用）信号光分解为多个光信号;波长组生成部分，用于接收来自每个第一波长解复用部分的光信号，波长组，每个用于从每个波长组生成部分接收每个波长组以输出WDM波长组的第一波长多路复用部分，用于路由输入的WDM波长组的路由部分，用于从WDM波长组接收每个WDM波长组的第二波长解复用部分输出具有多个波长的波长组的波长转换部分，每个用于对从每个第二波长解复用部分输出的波长组的每个光信号进行波长转换的波长转换部分，以及第二波长多路复用部分，每个f 或从波长转换部分输出的波分复用光信号。该器件适用于支持波长增加的大型光网络的构建。

3. 发明授权

US06433900B1 Optical wavelength multiplexing system having a redundant configuration 失效
标题翻译：具有冗余配置的光波分复用系统
公开(公告)号：US06433900B1
公开(公告)日：2002-08-13
申请号：US09229863
申请日：1999-03-01
申请人： Satoshi Kuroyanagi , Tetsuya Nishi , Ichiro Nakajima , Takuji Maeda , Isao Tsuyama
发明人： Satoshi Kuroyanagi , Tetsuya Nishi , Ichiro Nakajima , Takuji Maeda , Isao Tsuyama
IPC分类号： H04B1008
CPC分类号： H04Q11/0062 , H04J14/0279 , H04J14/0297 , H04Q2011/0016 , H04Q2011/0043 , H04Q2011/0081 , H04Q2011/0083
摘要： A protection switch comprising a demultiplexer, optical selector, a multiplexer, and a monitor circuit is provided on the input side and the output side of an optical XC node. The demultiplexer demultiplexes the wavelength-multiplexed optical signals of a 0-system and a 1-system, and transmits these optical signals to the optical selectors which are provided for the respective wavelengths. The optical selectors are controlled by the monitor circuit, and switch the optical signal of one system to that of the other system when a fault occurs. The optical signals of the respective wavelengths outputted from the optical selectors are multiplexed by a multiplexer to be transmitted. The demultiplexer and the multiplexer can be differently arranged depending on the configuration of a transmission line or the optical XC node. Further, a multi-wavelength selection filter such as an acousto-optical filter or the like can be used as a protection switch.
摘要翻译：在光学XC节点的输入侧和输出侧设置包括解复用器，光选择器，复用器和监视电路的保护开关。解复用器对0系统和1系统的波分复用光信号进行解复用，并将这些光信号发送到为各波长提供的光选择器。光电选择器由监控电路控制，当发生故障时，将一个系统的光信号切换到另一个系统的光信号。从光学选择器输出的各个波长的光信号由复用器复用以被发送。取决于传输线或光学XC节点的配置，解复用器和多路复用器可以被不同地布置。此外，可以使用诸如声光滤波器等的多波长选择滤波器作为保护开关。

4. 发明授权

US06154583A Optical switch 失效
标题翻译：光开关
公开(公告)号：US06154583A
公开(公告)日：2000-11-28
申请号：US114937
申请日：1998-07-14
申请人： Satoshi Kuroyanagi , Tetsuya Nishi , Takuji Maeda , Isao Tsuyama , Ichiro Nakajima
发明人： Satoshi Kuroyanagi , Tetsuya Nishi , Takuji Maeda , Isao Tsuyama , Ichiro Nakajima
IPC分类号： G02F1/31 , H04B10/27 , H04B10/29 , H04B10/291 , H04Q3/52 , H04Q11/00 , G02B6/26 , H04J14/00
CPC分类号： H04Q11/0005 , H04J14/0204 , H04J14/0205 , H04J14/021 , H04J14/0217 , H04J14/0219 , H04Q11/0003 , H04Q2011/0009 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0056
摘要： If an optical switch unit configuring an optical switch is implemented by a three-stage circuit, optical amplifiers are arranged on the input and output sides of an optical space switch in a first stage, and the optical space switch and the optical amplifiers on both of the input and output sides are used as an expansion unit for expanding a switching capacity. Similarly, optical amplifiers are arranged on input and output sides of an optical space switch in a third stage, and the optical space switch and the optical amplifiers on both of the input and output sides are used as an expansion unit for expanding a switching capacity. Accordingly, there is no need to arrange extra optical amplifiers even at an initial setting when only part of a maximum switching capacity is used, thereby reducing an initial investment.
摘要翻译：如果构成光开关的光开关单元由三级电路实现，则在第一级的光空间开关的输入和输出侧布置光放大器，并且光空间开关和光放大器输入和输出侧用作扩展开关容量的扩展单元。类似地，光放大器被布置在第三级的光学空间开关的输入和输出侧，并且光学空间开关和两个输入和输出侧的光放大器都用作扩展开关容量的扩展单元。因此，即使在仅使用最大开关容量的一部分的情况下，即使在初始设定时也不需要布置额外的光放大器，从而减少初始投资。

5. 发明授权

US06496289B1 Optical exchanger 失效
标题翻译：光交换器
公开(公告)号：US06496289B1
公开(公告)日：2002-12-17
申请号：US09111770
申请日：1998-07-08
申请人： Satoshi Kuroyanagi , Tetsuya Nishi , Takuji Maeda , Isao Tsuyama , Ichiro Nakajima
发明人： Satoshi Kuroyanagi , Tetsuya Nishi , Takuji Maeda , Isao Tsuyama , Ichiro Nakajima
IPC分类号： H04J1402
CPC分类号： H04J14/02
摘要： In addition to the configuration of a conventional optical XC node, a former-stage regenerator for converting optical signals to electrical signals and regenerating optical signals again is provided at an output stage of a demultiplexer and at the input stage of an optical switch unit. Since the regenerator has a 3R function, the regenerator compensates for the influence of the noise and crosstalk generated during propagation in the transmission line, and improves the S/N ratio of the optical signals. Since the optical signals with S/N ratios improved in this way are inputted to the optical switch unit, it is sufficient only if a latter-stage regenerator compensates for the S/N ratio degradation generated in the optical switch unit, and thereby the error rate characteristic of the optical signals can be improved.
摘要翻译：除了常规光学XC节点的配置之外，还在光分路器的输出级和光开关单元的输入级提供用于将光信号转换为电信号并再次再生光信号的前级再生器。由于再生器具有3R功能，所以再生器补偿传输线中产生的噪声和串扰的影响，提高了光信号的S / N比。由于以这种方式改善了S / N比的光信号被输入到光开关单元，所以仅当后级再生器补偿在光开关单元中产生的S / N比劣化，从而错误可以提高光信号的速率特性。

6. 发明授权

US06768573B1 Polarization control optical space switch 失效
标题翻译：极化控制光学空间开关
公开(公告)号：US06768573B1
公开(公告)日：2004-07-27
申请号：US09631355
申请日：2000-08-02
申请人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
发明人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
IPC分类号： G02F101
CPC分类号： H04Q11/0005 , G02B27/283 , G02F1/31 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0043 , H04Q2011/0052 , H04Q2011/0058
摘要： The present invention is directed to an optical space switch accommodating a plurality of input light paths and output light paths. The optical space switch comprises a plurality of polarization control optical switches, each consisting essentially of: polarization control means having elements, one for each input light path, for rotating through 90° the polarizing direction of light information incident from each input light path or otherwise retaining the polarizing direction thereof for output; and a light path routing element for routing the light path for the light information output from the polarization control means in accordance with the polarizing direction of the light information. These polarization control optical switches are arranged in a matrix pattern or coupled in cascade to implement a polarization control optical space switch.
摘要翻译：本发明涉及容纳多个输入光路和输出光路的光学空间开关。光学空间开关包括多个偏振控制光开关，每个偏振控制光开关主要包括：偏振控制装置，具有用于每个输入光路一个的元件，用于使来自每个输入光路入射的光信息的偏振方向旋转90° 保持其偏振方向输出; 以及光路路由元件，用于根据光信息的偏振方向路由从偏振控制装置输出的光信息的光路。这些偏振控制光开关被布置成矩阵图案或级联耦合以实现偏振控制光学空间开关。

7. 发明授权

US06285473B1 Polarization control optical space switch 失效
标题翻译：极化控制光学空间开关
公开(公告)号：US06285473B1
公开(公告)日：2001-09-04
申请号：US09631354
申请日：2000-08-02
申请人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
发明人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
IPC分类号： G02B532
CPC分类号： H04Q11/0005 , G02B27/283 , G02F1/31 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0043 , H04Q2011/0052 , H04Q2011/0058
摘要： The present invention,is directed to an optical space switch accommodating a plurality of input light paths and output light paths. The optical space switch comprises a plurality of polarization control optical switches, each consisting essentially of: polarization control means having elements, one for each input light path, for rotating through 90° the polarizing direction of light information incident from each input light path or otherwise retaining the polarizing direction thereof for output; and a light path routing element for routing the light path for the light information output from the polarization control means in accordance with the polarizing direction of the light information. These polarization control optical switches are arranged in a matrix pattern or coupled in cascade to implement a polarization control optical space switch.
摘要翻译：本发明涉及容纳多个输入光路和输出光路的光学空间开关。光学空间开关包括多个偏振控制光开关，每个偏振控制光开关主要由以下部分组成：具有元件的偏振控制装置，每个输入光路一个用于从每个输入光路入射的光信息的偏振方向旋转90° 保持其偏振方向输出; 以及光路路由元件，用于根据光信息的偏振方向路由从偏振控制装置输出的光信息的光路。这些偏振控制光开关被布置成矩阵图案或级联耦合以实现偏振控制光学空间开关。

8. 发明授权

US6134031A Polarization control optical space switch 失效
标题翻译：极化控制光学空间开关
公开(公告)号：US6134031A
公开(公告)日：2000-10-17
申请号：US200657
申请日：1994-02-23
申请人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
发明人： Tetsuya Nishi , Takuji Maeda , Satoshi Kuroyanagi , Tsuyoshi Yamamoto
IPC分类号： H04B10/27 , G02B27/28 , G02F1/31 , H04B10/2507 , H04Q3/52 , H04Q11/00 , G02B5/32 , G02F1/01 , H04J14/06
CPC分类号： H04Q11/0005 , G02B27/283 , G02F1/31 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0043 , H04Q2011/0052 , H04Q2011/0058
摘要： The present invention is directed to an optical space switch accommodating a plurality of input light paths and output light paths. The optical space switch comprises a plurality of polarization control optical switches, each consisting essentially of: polarization control means having elements, one for each input light path, for rotating through 90.degree. the polarizing direction of light information incident from each input light path or otherwise retaining the polarizing direction thereof for output; and a light path routing element for routing the light path for the light information output from the polarization control means in accordance with the polarizing direction of the light information. These polarization control optical switches are arranged in a matrix pattern or coupled in cascade to implement a polarization control optical space switch.
摘要翻译：本发明涉及容纳多个输入光路和输出光路的光学空间开关。光学空间开关包括多个偏振控制光开关，每个偏振控制光开关主要包括：具有元件的偏振控制装置，每个输入光路一个，用于从每个输入光路入射的光信息的偏振方向90度旋转90度保持其偏振方向输出; 以及光路路由元件，用于根据光信息的偏振方向路由从偏振控制装置输出的光信息的光路。这些偏振控制光开关被布置成矩阵图案或级联耦合以实现偏振控制光学空间开关。

9. 发明授权

US6072610A Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US6072610A
公开(公告)日：2000-06-06
申请号：US816078
申请日：1997-03-13
申请人： Satoshi Kuroyanagi , Kazuo Hironishi , Tetsuya Nishi , Takuji Maeda
发明人： Satoshi Kuroyanagi , Kazuo Hironishi , Tetsuya Nishi , Takuji Maeda
IPC分类号： H04J14/00 , H04B10/03 , H04B10/27 , H04B10/291 , H04J14/02 , H04L12/70 , H04M3/22 , H04Q3/52 , H04Q11/00 , H04Q11/04 , H04B10/08
CPC分类号： H04J14/0295 , H04J14/0291 , H04J14/0294 , H04Q11/0062 , H04Q11/0478 , H04J14/0284 , H04J14/0286 , H04L2012/5627 , H04Q11/0066 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0013 , H04Q2011/0015 , H04Q2011/0039 , H04Q2011/0043 , H04Q2011/0047 , H04Q2011/0052 , H04Q2011/0081 , H04Q2011/0083
摘要： An optical transmission system includes an optical path cross-connect device and an electrical cross-connect device connected by a plurality of working and standby input/output interface links. Optical signals in the working and standby systems are entered from the optical path cross-connect device into the electrical cross-connect device via the working and standby interface links, respectively, and switching of working and standby transmission lines is performed electrically by the electrical cross-connect device without momentary disconnect.
摘要翻译：光传输系统包括光路交叉连接装置和通过多个工作和备用输入/输出接口链路连接的电交叉连接装置。工作和备用系统中的光信号分别通过工作和备用接口链路从光路交叉设备进入电气交叉连接设备，工作和备用传输线路的切换由电气十字 - 连接设备，无需瞬间断开连接。

10. 发明授权

US5805320A Cross-connect device 失效
标题翻译：交叉连接设备
公开(公告)号：US5805320A
公开(公告)日：1998-09-08
申请号：US658739
申请日：1996-06-05
申请人： Satoshi Kuroyanagi , Kazuo Hironishi , Takuji Maeda
发明人： Satoshi Kuroyanagi , Kazuo Hironishi , Takuji Maeda
IPC分类号： H04Q3/52 , H04Q3/00 , H04Q11/00 , H04Q11/04 , H04J14/02
CPC分类号： H04J14/0295 , H04Q11/0062 , H04Q3/0079 , H04J14/0283 , H04J14/0284 , H04J14/0286 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0015 , H04Q2011/0043 , H04Q2011/0052 , H04Q2011/0081
摘要： An optical cross-connect device for optical networks is connected to reserve optical transmission lines and working optical transmission lines, and is used to switch optical signals. The optical cross-connect device includes a bypass component, a routing component and connection links. The bypass component includes an optical-space switch that is connected to the reserve optical transmission lines. The routing component also includes an optical-space switch that is connected to the working optical transmission lines. The connection links are connected between both input and output parts of the optical-space switch of both the bypass component and the routing component.
摘要翻译：连接用于光网络的光交叉设备，以保留光传输线路和工作光传输线路，并用于切换光信号。光学交叉连接装置包括旁路部件，路由组件和连接链路。旁路部件包括连接到备用光传输线的光空间开关。路由组件还包括连接到工作光传输线的光空间交换机。连接链路连接在旁路组件和路由组件的光空间交换机的输入和输出部分之间。

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