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公开(公告)号：US07110674B2
公开(公告)日：2006-09-19
申请号：US11066465
申请日：2005-02-28
CPC分类号： H04Q11/0062 , H04J14/0212 , H04J14/0217 , H04J14/022 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0283 , H04J14/0291 , H04J14/0295 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0039 , H04Q2011/0045 , H04Q2011/0079 , H04Q2011/0081 , H04Q2011/0092
摘要： Disclosed herein is an optical add/drop device including an optical demultiplexer for separating WDM signal light into n optical signals where n is an integer not less than 2, n first optical switches to which the n optical signals output from the optical demultiplexer are supplied, respectively, a second optical switch for adding provided on the input side of the first optical switches, a third optical switch for dropping provided on the output side of the first optical switches, n regenerators for wavelength converting the optical signals passed through the first optical switches, and an optical multiplexer for wavelength division multiplexing the wavelength-converted optical signals. A transmission distance between nodes can be increased by using this device.
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2.发明授权公开(公告)号：US06643422B2
公开(公告)日：2003-11-04
申请号：US09797731
申请日：2001-03-05
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.
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公开(公告)号：US06433900B1
公开(公告)日：2002-08-13
申请号：US09229863
申请日：1999-03-01
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。
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公开(公告)号：US06404940B1
公开(公告)日：2002-06-11
申请号：US09558553
申请日：2000-04-25
IPC分类号： G02B635
CPC分类号： H04Q11/0005 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0047 , H04Q2011/0049
摘要： In an optical cross connect apparatus, an optical multiplexing/distributing section wavelength-multiplexes optical signals of wavelengths after routing by an optical input switch section and distributively outputs the resultant multiplexed optical signal as input optical signals to an optical output switch section. In addition, an optical wavelength selecting section conducts wavelength selection processing so that, of the resultant multiplexed optical signal, an optical signal of a desired wavelength is outputted to an output port. With this configuration, it is possible to economically offer an optical cross connect apparatus having an excellent extensibility on a change (particularly, an increase) of the number of wavelengths to be accommodated per port.
摘要翻译： 在光交叉连接装置中，光复用/分配部通过光输入开关部对路由后的波长的光信号进行波分复用，并将所生成的复用光信号作为输入光信号分配输出到光输出开关部。 此外，光波长选择部分进行波长选择处理，使得所得到的复用光信号中所需波长的光信号被输出到输出端口。 利用这种配置，可以经济地提供一种在每个端口容纳的波长数量的变化（特别是增加）上具有优异的可扩展性的光学交叉连接装置。
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公开(公告)号：US06496289B1
公开(公告)日：2002-12-17
申请号：US09111770
申请日：1998-07-08
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。
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公开(公告)号：US20050175342A1
公开(公告)日：2005-08-11
申请号：US11066465
申请日：2005-02-28
IPC分类号： H04B10/27 , H04B10/032 , H04B10/07 , H04B10/275 , H04B10/29 , H04B10/291 , H04J14/02 , H04Q3/52 , H04Q11/00 , H04J14/00
CPC分类号： H04Q11/0062 , H04J14/0212 , H04J14/0217 , H04J14/022 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0283 , H04J14/0291 , H04J14/0295 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0039 , H04Q2011/0045 , H04Q2011/0079 , H04Q2011/0081 , H04Q2011/0092
摘要： Disclosed herein is an optical add/drop device including an optical demultiplexer for separating WDM signal light into n optical signals where n is an integer not less than 2, n first optical switches to which the n optical signals output from the optical demultiplexer are supplied, respectively, a second optical switch for adding provided on the input side of the first optical switches, a third optical switch for dropping provided on the output side of the first optical switches, n regenerators for wavelength converting the optical signals passed through the first optical switches, and an optical multiplexer for wavelength division multiplexing the wavelength-converted optical signals. A transmission distance between nodes can be increased by using this device.
摘要翻译： 本发明公开了一种光分插装置，包括用于将WDM信号光分离为n为不小于2的整数的n个光信号的光解复用器，n个从光解复用器输出的n个光信号提供给的第一光开关， 分别设置在第一光开关的输入侧的第二光开关，设置在第一光开关的输出侧的第三光开关，用于波长转换通过第一光开关的光信号的再生器 以及用于波分复用波长转换光信号的光复用器。 通过使用该设备可以增加节点之间的传输距离。
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公开(公告)号：US06741811B2
公开(公告)日：2004-05-25
申请号：US09813951
申请日：2001-03-22
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。
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公开(公告)号：US06718081B2
公开(公告)日：2004-04-06
申请号：US09960299
申请日：2001-09-24
IPC分类号： G02B626
CPC分类号： H04Q11/0005 , H04Q2011/0011 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/003 , H04Q2011/0039 , H04Q2011/0049 , H04Q2011/0058
摘要： In an optical switch comprising a plurality of input ports and output ports, and performing a path establishment between the input ports and output ports, interception means intercept an optical signal inputted to the optical switch during a path switchover. Alternatively, a controller of the optical switch controls input movable mirrors, during the path switchover, so as to prevent optical signals deflected by movable mirrors from being outputted to all of the output ports except an output port for a new path establishment, e.g. during a path switchover, so that optical signals reflected by the input movable mirrors may not be entered into other output movable mirrors except an output movable mirror necessary for a new path establishment. Alternatively, the output movable mirrors of the optical switch are separated into a plurality of areas to be arranged, and are arranged in each area so that the path switchover between two output movable mirrors is performed without the optical signal crossing other output movable mirrors.
摘要翻译： 在包括多个输入端口和输出端口的光开关中，并且在输入端口和输出端口之间执行路径建立，截取装置在路径切换期间截取输入到光开关的光信号。 或者，光开关的控制器在路径切换期间控制输入可移动反射镜，以防止由可移动镜偏转的光信号被输出到除了用于新路径建立的输出端口之外的所有输出端口，例如新路径建立的输出端口。 在路径切换期间，使得由输入可移动镜反射的光信号可能不被输入到除了新路径建立所需的输出可移动镜之外的其它输出可移动镜中。 或者，光开关的输出可移动反射镜被分离成多个要布置的区域，并且被布置在每个区域中，使得在两个输出可移动反射镜之间的路径切换被执行而光信号不与其他输出可移动反射镜交叉。
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公开(公告)号：US06522803B1
公开(公告)日：2003-02-18
申请号：US09558072
申请日：2000-04-26
IPC分类号： G02B628
CPC分类号： H04Q11/0005 , H04J14/0204 , H04J14/0205 , H04J14/0212 , H04J14/0213 , H04J14/0221 , H04Q2011/0009 , H04Q2011/0011 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0049
摘要： Optical cross-connect equipment in which the intensity of a signal light input to optical amplifiers is held constant. Optical cross-connect equipment includes an optical pre-amplifier; a demultiplexer for demultiplexing an input multi-wavelength signal light into wavelength-split lights each having different wavelength; and a routing portion for routing each wavelength-split signal light having different wavelength to a desired output port. The routing portion further includes a control light generator for generating control lights corresponding to the signal lights split by the demultiplexer; a route switch to switch a route for each split signal light having different wavelength to output; an optical amplifier for amplifying each signal light output from the route switch; a control light insertion portion for inserting the control light generated by the control light generator; and a wavelength selector for selecting an output of the control light insertion portion having a wavelength assigned to the wavelength selector to forward to an output port.
摘要翻译： 输入到光放大器的信号光的强度保持恒定的光交叉连接设备。 光交叉连接设备包括光学前置放大器; 多路分解器，用于将输入的多波长信号光解复用为各自具有不同波长的波长分离光; 以及路由部分，用于将具有不同波长的每个波长分离信号光路路由到期望的输出端口。 路由部分还包括控制光发生器，用于产生对应于由解复用器分离的信号光的控制光; 路由开关，用于切换具有不同波长的每个分离信号光的路由以输出; 光放大器，用于放大从路径开关输出的每个信号光; 用于插入由控制光发生器产生的控制光的控制光插入部; 以及波长选择器，用于选择具有分配给波长选择器的波长的控制光插入部分的输出以转发到输出端口。
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公开(公告)号：US06154583A
公开(公告)日：2000-11-28
申请号：US114937
申请日：1998-07-14
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。
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