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公开(公告)号：US20070206493A1
公开(公告)日：2007-09-06
申请号：US11745974
申请日：2007-05-08
申请人： Susumu Kinoshita , Koji Takeguchi , Satoru Odate , Cechan Tian
发明人： Susumu Kinoshita , Koji Takeguchi , Satoru Odate , Cechan Tian
IPC分类号： G01R31/08
CPC分类号： H04J14/0291 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0212 , H04J14/0227 , H04J14/0241 , H04J14/0283
摘要： A flexible open ring optical network includes a plurality of nodes connected by twin or other suitable optical rings. Each node is operable to passively add and passively drop traffic from the rings. The nodes may include a transport element for each ring. The transport elements include an optical splitter element and an optical combiner element. The optical splitter element is operable to passively combine an add signal including local add traffic and a first transport signal including ingress traffic from a coupled optical ring to generate a second transport signal including egress traffic for transmission on the coupled optical ring. The optical combiner element is coupled to the optical splitter element and is operable to passively split a third transport signal including the ingress traffic to generate a drop signal including local drop traffic and a fourth transport signal including the ingress traffic. Protection switching may be provided by selectively openable switches disposed in and distributed around the rings.
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公开(公告)号：US07024121B2
公开(公告)日：2006-04-04
申请号：US10274537
申请日：2002-10-17
IPC分类号： H04J14/02
CPC分类号： H04L7/0008 , H04J3/0638 , H04J3/0641 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J14/028 , H04J14/0282 , H04J14/0283 , H04J14/0284
摘要： Proposed is an optical clock distribution system in the WDM network, which particularly relates to a system to control clock synchronization between optical transmission devices constituting an optical communication network. The optical clock distribution system includes an optical clock generator converting a clock signal of PRC (Primary Reference Clock) level into an optical clock signal having a wavelength λ0; a wavelength multiplexer wavelength-multiplexing the optical clock signal having wavelength λ0 together with other optical wavelength data; and a wavelength-demultiplexer provided in a unit of the network, wavelength-demultiplexing the optical clock signal having wavelength λ0, wherein the other optical wavelength data are processed in the unit of the network using the wavelength-demultiplexed optical clock signal having wavelength λ0 as a reference clock.
摘要翻译： 提出了WDM网络中的光时钟分配系统，其特别涉及一种控制构成光通信网络的光传输设备之间的时钟同步的系统。 光时钟分配系统包括将PRC（主参考时钟）电平的时钟信号转换成具有波长λ0的光时钟信号的光时钟发生器; 波长复用器将具有波长λ0的光时钟信号与其他光波长数据一起波长多路复用; 以及以网络为单位设置的波长解复用器，对具有波长λ0的光时钟信号进行波长解复用，其中使用具有波长λ的波长解复用的光时钟信号以网络为单位处理其它光波长数据 0作为参考时钟。
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公开(公告)号：US20050213970A1
公开(公告)日：2005-09-29
申请号：US10900763
申请日：2004-07-28
申请人： Gaku Kimura , Koji Takeguchi
发明人： Gaku Kimura , Koji Takeguchi
IPC分类号： H04B10/2507 , H04B10/25 , H04B10/275 , H04B10/29 , H04B10/299 , H04J14/00 , H04J14/02
CPC分类号： H04J14/0291 , H04J14/0283 , H04J14/0294
摘要： A relay transmission apparatus in which the effectiveness of a protecting function is improved by suppressing variation of an OSNR value of a signal regardless of the distance that the signal is transmitted. The relay transmission apparatus is comprised of a first regenerative relay unit, a second regenerative relay unit, and a protection process unit for extracting a signal component from each of the first and second regenerative relay units and selectively outputting either of the extracted signal components as a drop signal.
摘要翻译： 一种中继发送装置，其中通过抑制信号的OSNR值的变化而改善保护功能的有效性，而与信号的发送距离无关。 中继传输装置包括第一再生中继单元，第二再生中继单元和保护处理单元，用于从第一和第二再生中继单元中的每一个提取信号分量，并且将所提取的信号分量中的任一个选择性地输出为 丢弃信号。
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公开(公告)号：US09264167B2
公开(公告)日：2016-02-16
申请号：US13053766
申请日：2011-03-22
申请人： Kazuo Takatsu , Koji Takeguchi
发明人： Kazuo Takatsu , Koji Takeguchi
CPC分类号： H04J14/0212 , H04J14/0204 , H04J14/0205 , H04J14/0209 , H04J14/021
摘要： An optical add-drop multiplexer having first and second routes includes: an optical cross connect; a first multiplexer optically coupled to a plurality of output ports of the optical cross connect; a second multiplexer optically coupled to a plurality of other output ports of the optical cross connect; a first wavelength selective switch to generate a first WDM optical signal including an optical signal output from the first multiplexer and to guide the first WDM optical signal to the first route; and a second wavelength selective switch to generate a second WDM optical signal including optical signal output from the second multiplexer and to guide the second WDM optical signal to the second route.
摘要翻译： 具有第一和第二路由的光分插复用器包括：光交叉连接; 第一复用器，光耦合到所述光交叉连接的多个输出端口; 光学交叉连接的多个其他输出端口光耦合的第二复用器; 第一波长选择开关，用于产生包括从第一多路复用器输出的光信号并将第一WDM光信号引导到第一路由的第一WDM光信号; 以及第二波长选择开关，用于产生包括从第二多路复用器输出的光信号并将第二WDM光信号引导到第二路由的第二WDM光信号。
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公开(公告)号：US07957429B2
公开(公告)日：2011-06-07
申请号：US11803692
申请日：2007-05-15
CPC分类号： H04J3/1611 , H04J3/0623 , H04J14/02 , H04J2203/006 , H04J2203/0089 , H04J2203/0094 , H04Q11/0478
摘要： In order to increase the efficiency of large-capacity transmission, the continuity of divided signals generated by dividing a multiplexed signal is maintained and the original large-capacity multiplexed signal is restored. A signal dividing section divides a multiplexed signal to generate a plurality of divided signals in the STS or STM transmission interface format. A guarantee information adding section adds guarantee information for guaranteeing the continuity of the divided signals to each of the divided signals to generate transmission signals. A signal sending section sends the transmission signals via a transmission line in the transmission interface format. A signal receiving section receives the transmission signals. A signal restoring section restores the multiplexed signal by constructing the divided signals on the basis of the guarantee information.
摘要翻译： 为了提高大容量传输的效率，维持通过分割多路复用信号而产生的分频信号的连续性，并恢复原来的大容量复用信号。 信号分割部分分复用信号以产生STS或STM传输接口格式的多个分频信号。 保证信息添加部分添加保证信息，以保证分割信号的连续性到每个分割信号以产生传输信号。 信号发送部通过发送接口格式的传输线路发送发送信号。 信号接收部接收发送信号。 信号恢复部通过基于保证信息构成分割信号来恢复复用信号。
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公开(公告)号：US07239649B2
公开(公告)日：2007-07-03
申请号：US09886268
申请日：2001-06-21
IPC分类号： H04J3/24
CPC分类号： H04J3/1611 , H04J3/0623 , H04J14/02 , H04J2203/006 , H04J2203/0089 , H04J2203/0094 , H04Q11/0478
摘要： In order to increase the efficiency of large-capacity transmission, the continuity of divided signals generated by dividing a multiplexed signal is maintained and the original large-capacity multiplexed signal is restored. A signal dividing section divides a multiplexed signal to generate a plurality of divided signals in the STS or STM transmission interface format. A guarantee information adding section adds guarantee information for guaranteeing the continuity of the divided signals to each of the divided signals to generate transmission signals. A signal sending section sends the transmission signals via a transmission line in the transmission interface format. A signal receiving section receives the transmission signals. A signal restoring section restores the multiplexed signal by constructing the divided signals on the basis of the guarantee information.
摘要翻译： 为了提高大容量传输的效率，维持通过分割多路复用信号而产生的分频信号的连续性，并恢复原来的大容量复用信号。 信号分割部分分复用信号以产生STS或STM传输接口格式的多个分频信号。 保证信息添加部分添加保证信息，以保证分割信号的连续性到每个分割信号以产生传输信号。 信号发送部通过发送接口格式的传输线路发送发送信号。 信号接收部接收发送信号。 信号恢复部通过基于保证信息构成分割信号来恢复复用信号。
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公开(公告)号：US07184663B2
公开(公告)日：2007-02-27
申请号：US10262818
申请日：2002-10-01
IPC分类号： H04B10/20
CPC分类号： H04Q11/0005 , H04J14/021 , H04J14/0283 , H04J14/0294 , H04J14/0297 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0024 , H04Q2011/0092
摘要： An optical network includes an optical ring and a plurality of add/drop nodes coupled to the optical ring. Each of the add/drop nodes is operable to passively add and drop one or more traffic streams to and from the optical ring, and each traffic stream comprises a channel. A hub node also coupled to the optical ring is operable to selectively pass and terminate individual traffic streams.
摘要翻译： 光网络包括光环和耦合到光环的多个添加/分出节点。 每个添加/分出节点可操作以将一个或多个业务流被动地添加到光环上并从光环中移除，并且每个业务流包括信道。 还耦合到光环的集线器节点可操作以选择性地通过和终止各个业务流。
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公开(公告)号：US20050117909A1
公开(公告)日：2005-06-02
申请号：US10726167
申请日：2003-12-02
申请人： Yasuhiko Aoki , Susumu Kinoshita , Koji Takeguchi
发明人： Yasuhiko Aoki , Susumu Kinoshita , Koji Takeguchi
CPC分类号： H04Q11/0005 , H04J14/0204 , H04J14/0205 , H04J14/021 , H04J14/0217 , H04J14/0219 , H04Q2011/0009 , H04Q2011/0015
摘要： An optical cross-connect includes multiple input ports that each receive an optical input signal and multiple output ports that each output an optical output signal. The optical cross-connect also includes a distributing amplifier associated with each input port that generates multiple copies of the input signal received at the associated input port. Furthermore, the optical cross-connect includes multiple filter units that receive a copy of one or more of the input signals from one or more of the distributing amplifiers and forward traffic in selected channels of one or more of the received copies. In addition, the optical cross-connect includes a combining amplifier associated with each output port. Each combining amplifier receives the traffic in one or more of the channels forwarded by one or more of the filter units and combines the received traffic into an output signal to be output from the associated output port.
摘要翻译： 光交叉连接包括多个输入端口，每个输入端口接收光输入信号和多个输出端口，每个输出端口输出光输出信号。 光交叉连接还包括与每个输入端口相关联的分配放大器，其产生在相关联的输入端口处接收的输入信号的多个副本。 此外，光交叉连接包括多个滤波器单元，其接收来自一个或多个分配放大器的一个或多个输入信号的副本以及一个或多个所接收副本的所选频道中的前向业务。 此外，光交叉连接包括与每个输出端口相关联的组合放大器。 每个组合放大器接收由一个或多个滤波器单元转发的一个或多个信道中的业务，并将接收到的业务组合成输出信号以从相关联的输出端口输出。
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公开(公告)号：US06567422B1
公开(公告)日：2003-05-20
申请号：US09363357
申请日：1999-07-29
IPC分类号： H04J306
CPC分类号： H04J3/0647 , H04J3/0641 , H04J3/0679 , H04J2203/0042 , H04J2203/006 , H04J2203/0089
摘要： A network synchronization controller and method for effectively preventing a timing loop from happening in a synchronous network. A clock status message controller, disposed in each network element on the network, produces and sends clock status messages which are each composed of clock quality data and synchronization control data. The clock quality data indicates the quality level of a clock signal that each network element supplies to its neighboring network elements. The synchronization control data contains information to be used to make the network synchronized with a single reference timing source. A clock selector chooses one of the clock signals received from other network elements, based on the clock status messages received along with the clock signals.
摘要翻译： 一种网络同步控制器和方法，用于有效地防止定时环路在同步网络中发生。 设置在网络中的每个网络元件中的时钟状态消息控制器产生并发送每个由时钟质量数据和同步控制数据组成的时钟状态消息。 时钟质量数据表示每个网络元件向其相邻网络元件提供的时钟信号的质量水平。 同步控制数据包含用于使网络与单个参考定时源同步的信息。 时钟选择器基于与时钟信号一起接收的时钟状态消息来选择从其他网络元件接收的时钟信号之一。
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公开(公告)号：US07970278B2
公开(公告)日：2011-06-28
申请号：US11745946
申请日：2007-05-08
申请人： Susumu Kinoshita , Koji Takeguchi , Satoru Odate , Cechan Tian
发明人： Susumu Kinoshita , Koji Takeguchi , Satoru Odate , Cechan Tian
CPC分类号： H04J14/0291 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0212 , H04J14/0227 , H04J14/0241 , H04J14/0283
摘要： A flexible open ring optical network includes a plurality of nodes connected by twin or other suitable optical rings. Each node is operable to passively add and passively drop traffic from the rings. The nodes may include a transport element for each ring. The transport elements include an optical splitter element and an optical combiner element. The optical splitter element is operable to passively combine an add signal including local add traffic and a first transport signal including ingress traffic from a coupled optical ring to generate a second transport signal including egress traffic for transmission on the coupled optical ring. The optical combiner element is coupled to the optical splitter element and is operable to passively split a third transport signal including the ingress traffic to generate a drop signal including local drop traffic and a fourth transport signal including the ingress traffic. Protection switching may be provided by selectively openable switches disposed in and distributed around the rings.
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