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1. 发明授权

US07280470B2 Ring network for sharing protection resource by working communication paths 有权
标题翻译：环网通过工作通信路径共享保护资源
公开(公告)号：US07280470B2
公开(公告)日：2007-10-09
申请号：US10654222
申请日：2003-09-03
申请人： Tatsuya Shiragaki , Naoya Henmi , Makoto Nishio , Hitoshi Takeshita , Hirofumi Shimomura
发明人： Tatsuya Shiragaki , Naoya Henmi , Makoto Nishio , Hitoshi Takeshita , Hirofumi Shimomura
IPC分类号： H04J3/04 , H04J14/00 , G01R31/08 , G02F1/00 , H04B10/08
CPC分类号： H04J14/0283 , H04J14/0206 , H04J14/0212 , H04J14/0295 , H04J14/0297
摘要： Multiple working paths are established on each working rings and multiple protection paths are established on each of multiple protection rings. A working path on a first working ring spans across first and second nodes for signal transmission in a first direction of the ring, and a working path on a second working ring spans across the first and second nodes for signal transmission in a second, opposite direction of the ring. A protection path on a first protection ring spans across the first and second nodes for signal transmission in said second direction, and a protection path on a second protection ring spans across the first and second nodes for signal transmission in said first direction. The first and second nodes normally use the working paths, respectively. When one of the working paths fails, the first and second nodes use a corresponding protection path.
摘要翻译：在每个工作环上建立多个工作路径，并在多个保护环中的每一个上建立多个保护路径。第一工作环上的工作路径横跨第一和第二节点，用于在环的第一方向上进行信号传输，并且第二工作环上的工作路径跨越第一和第二节点跨过第二和相反方向进行信号传输的戒指第一保护环上的保护路径穿过第一和第二节点，用于在所述第二方向上进行信号传输，并且第二保护环上的保护路径横跨第一和第二节点跨过所述第一方向进行信号传输。第一和第二节点通常分别使用工作路径。当其中一个工作路径发生故障时，第一个和第二个节点使用相应的保护路径。

2. 发明授权

US06657952B1 Ring network for sharing protection resource by working communication paths 有权
标题翻译：环网通过工作通信路径共享保护资源
公开(公告)号：US06657952B1
公开(公告)日：2003-12-02
申请号：US09200583
申请日：1998-11-27
申请人： Tatsuya Shiragaki , Naoya Henmi , Makoto Nishio , Hitoshi Takeshita , Hirofumi Shimomura
发明人： Tatsuya Shiragaki , Naoya Henmi , Makoto Nishio , Hitoshi Takeshita , Hirofumi Shimomura
IPC分类号： G01R3108
CPC分类号： H04J14/0283 , H04J14/0206 , H04J14/0212 , H04J14/0295 , H04J14/0297
摘要： In a ring topology network, a number of nodes interconnect transmission links to form first and second working rings and first and second optical protection rings in a ring topology. Multiple working paths are established on each working ring and multiple protection paths are established on each protection ring corresponding to the working paths. A first working path spans across first and second nodes for transmission of a signal in a first direction of the ring topology, and a second working path of the second working rings spans across the first and second nodes for transmission of a signal in a second direction of the ring topology opposite to the first direction. A first protection path on the first protection ring spans across the first and second nodes for transmission of a signal in the second direction of the ring topology, and a second protection path of the second protection ring spans across the first and second nodes for transmission of a signal in the first direction of the ring topology. The first and second nodes normally use the first and second working paths, respectively. Responsive to a failure of one of the first and second working paths, the first and second nodes use a corresponding one of the first and second protection paths, instead of the failed working path.
摘要翻译：在环形拓扑网络中，多个节点互连传输链路以形成环形拓扑中的第一和第二工作环以及第一和第二光学保护环。在每个工作环上建立多个工作路径，并在与工作路径对应的每个保护环上建立多条保护路径。第一工作路径横跨第一和第二节点，用于在环形拓扑的第一方向传输信号，并且第二工作环的第二工作路径横跨第一和第二节点跨过第二方向传输信号的环形拓扑与第一个方向相反。第一保护环上的第一保护路径穿过第一和第二节点，用于在环形拓扑的第二方向上传输信号，并且第二保护环的第二保护路径跨过第一和第二节点传输环形拓扑的第一个方向的信号。第一和第二节点通常分别使用第一和第二工作路径。响应于第一和第二工作路径之一的故障，第一和第二节点使用第一和第二保护路径中的对应的一个，而不是故障工作路径。

3. 发明授权

US06407834B1 Optical wave network system and method of monitoring a network trouble 失效
标题翻译：光波网络系统和监控网络故障的方法
公开(公告)号：US06407834B1
公开(公告)日：2002-06-18
申请号：US09153217
申请日：1998-09-14
申请人： Hitoshi Takeshita , Naoya Henmi
发明人： Hitoshi Takeshita , Naoya Henmi
IPC分类号： H04B1008
CPC分类号： H04J14/0295 , H04J14/0201 , H04J14/0227 , H04J14/0245 , H04J14/0249 , H04J14/0283 , H04J14/0284 , H04J14/0286
摘要： Optical regenerative relay amplifier 102 has a function for monitoring the power of optical signals from an optical fiber 101, and issuing an optical signal trouble detection signal (AIS (Alarm Indication Signal)) for shutting down the optical power in case that optical signal inputs are lost, and notifying the trouble, and optical ADMs 103 have a wavelength path selecting function, a wavelength path bundle function, and a wavelength path trouble or quality monitoring function in addition to an AIS issue function, and the optical cross-connect systems 104 have an AIS issue function, a function for monitoring a trouble or quality deterioration of optical signals for every wavelength path, a wavelength path grooming function, and a wavelength path protection function, and the terminal stations 105 transmit and receive services by optical signals having predetermined wavelengths, and monitoring a trouble or quality deterioration of optical signals for every wavelength path is conducted without depending on signal speed and format.
摘要翻译：光学再生继电器放大器102具有用于监视来自光纤101的光信号的功率的功能，并且发出光信号故障检测信号（AIS（报警指示信号）），用于在光信号输入为丢失并通知故障，除了AIS发布功能之外，光ADM103具有波长路径选择功能，波长路径束功能，波长路径故障或质量监视功能，并且光交叉连接系统104具有 AIS发布功能，用于监视每个波长路径的光信号的故障或质量恶化的功能，波长路径梳理功能和波长路径保护功能，并且终端105通过具有预定波长的光信号来发送和接收业务并且对于每个波长路径监视光信号的故障或质量恶化进行根据信号速度和格式。

4. 发明授权

US06771907B1 Optical ring system 失效
标题翻译：光环系统
公开(公告)号：US06771907B1
公开(公告)日：2004-08-03
申请号：US09576240
申请日：2000-05-24
申请人： Yuuki Yoshifuji , Shuichi Iida , Takashi Yamazaki , Youko Nakabayashi , Shinya Nakamura , Kimio Ozawa , Naoki Ando , Hitoshi Kikuchi , Tukasa Haga , Hiromitu Watanabe , Minoru Shinta , Hitoshi Takeshita , Shinobu Sasaki , Ryou Yamada , Naoya Henmi
发明人： Yuuki Yoshifuji , Shuichi Iida , Takashi Yamazaki , Youko Nakabayashi , Shinya Nakamura , Kimio Ozawa , Naoki Ando , Hitoshi Kikuchi , Tukasa Haga , Hiromitu Watanabe , Minoru Shinta , Hitoshi Takeshita , Shinobu Sasaki , Ryou Yamada , Naoya Henmi
IPC分类号： H04J1400
CPC分类号： H04J14/0295 , H04J14/0227 , H04J14/0241 , H04J14/0283
摘要： An optical ring system having: a wavelength demultiplexer to which wavelength-multiplexed optical signal to be sent through an optical fiber from a previous node of multiple nodes is input and in which optical signal with each wavelength assigned to itself is demultiplexed; an optical ring device which is disposed in a predetermined node of the multiple nodes to the each wavelength assigned and which is composed of a failure existence judging part which terminates an overhead of each optical signal with a wavelength demultiplexed by the wavelength demultiplexer and judges whether a failure occurs in regard to a wavelength in a previous section through which optical signal with the assigned wavelength is sent, and a switching part which, when the failure existence judging means determines the occurrence of failure, selects a path that allows optical signal with the wavelength to be transmitted to the previous node while avoiding the previous section incurring the failure; and a wavelength multiplexer which multiplexes optical signal to be output from the optical ring part and then outputs it to an optical fiber connected to a next node.
摘要翻译：一种光环系统，具有波长解复用器，通过来自多个节点的先前节点的光纤输入波分复用光信号，其中分配有每个波长的光信号被解复用; 光环设备，被布置在多个节点的预定节点到分配的每个波长，并且由故障存在判断部分组成，故障存在判断部分终止由波长解复用器解复用的波长的每个光信号的开销，并判断是否关于发送了具有指定波长的光信号的先前部分中的波长发生故障，以及当故障存在判断装置确定故障发生时，选择允许具有波长的光信号的路径的切换部分被发送到上一个节点，同时避免前一个部分发生故障; 以及多路复用从光环部分输出的光信号，然后将其输出到连接到下一个节点的光纤。

5. 发明授权

US6061156A Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：US6061156A
公开(公告)日：2000-05-09
申请号：US16306
申请日：1998-01-30
申请人： Hitoshi Takeshita , Naoya Henmi
发明人： Hitoshi Takeshita , Naoya Henmi
IPC分类号： G02B6/00 , G02B6/122 , H04B10/03 , H04B10/032 , H04B10/079 , H04B10/2507 , H04B10/27 , H04B10/294 , H04B10/299 , H04M3/18 , H04Q3/52 , H04Q11/00 , H04J14/00 , H04J4/00 , H04J14/02 , H04J14/08
CPC分类号： H04Q11/0005 , H04Q2011/0011 , H04Q2011/0015 , H04Q2011/0043 , H04Q2011/0045 , H04Q2011/0052
摘要： In an optical transmission system comprising an optical branch unit, first through fourth OR/OS pairs each of which includes optical receiver and optical transmitter, optical switch devices for active and standby systems, each of the optical switch devices having an N number of input ports and M number of output ports; and an optical multiplexer for multiplexing an M number of optical signal supplied from the third OR/OS pair and an M number of optical signals supplied from the fourth OR/OS pair to produce an M number of optical signals, the optical switch devices and the first through the fourth OR/OS pairs have a 3-dB margin with respect to the input optical strength. First and second paths are each adjusted such that the time required for transmitting an optical signal is identical for all paths. The first path is from an output port of the optical branch unit to the point where the optical signals are multiplexed in the optical multiplexer via the first and the third OR/OS pairs, and the optical switch device for the active system. The second path is from an output port of the optical branch unit to the point where the optical signals are multiplexed in the optical multiplexer via the second and the fourth OR/OS pairs, and the optical switch device for the standby system.
摘要翻译：在包括光分支单元的光传输系统中，第一到第四OR / OS对，其中每一个包括光接收器和光发射器，用于主动和待机系统的光开关装置，每个光开关装置具有N个输入端口和M个输出端口; 以及光复用器，用于复用从第三OR / OS对提供的M个光信号和从第四OR / OS对提供的M个光信号，以产生M个光信号，光开关器件和首先通过第四个OR / OS对相对于输入光强度具有3-dB的余量。每个调整第一和第二路径，使得发送光信号所需的时间对于所有路径是相同的。第一路径是从光分支单元的输出端口到光信号经由第一和第三OR / OS对复用在光复用器中的点，以及用于主动系统的光开关装置。第二路径是从光分支单元的输出端口到光信号经由第二和第四OR / OS对复用在光复用器中的点，以及备用系统的光开关器件。

6. 发明授权

US06538779B1 Optical signal monitoring method and apparatus 有权
标题翻译：光信号监控方法及装置
公开(公告)号：US06538779B1
公开(公告)日：2003-03-25
申请号：US09332930
申请日：1999-06-14
申请人： Hitoshi Takeshita , Hirofumi Shimomura , Tatsuya Shiragaki , Naoya Henmi
发明人： Hitoshi Takeshita , Hirofumi Shimomura , Tatsuya Shiragaki , Naoya Henmi
IPC分类号： H04B1008
CPC分类号： H04L1/20 , H04B10/07953 , H04L25/063 , H04Q11/0005 , H04Q2011/0039 , H04Q2011/0045 , H04Q2011/0083
摘要： A signal quality monitoring method with reliability is disclosed. After extracting a clock signal from the light signal, a decision region is set for each bit of the light signal. The decision region is defined by a plurality of threshold amplitudes corresponding respectively to threshold phases which are produced with respect to the clock signal. The quality of the light signal is monitored depending on whether an amplitude of the light signal falls into the decision region at timings of the N threshold phases.
摘要翻译：公开了一种具有可靠性的信号质量监测方法。在从光信号提取时钟信号之后，为光信号的每一位设置判定区域。决定区域由分别对应于相对于时钟信号产生的阈值相位的多个阈值幅度来定义。根据在N个阈值相位的定时，光信号的幅度是否落入判定区域来监视光信号的质量。

7. 发明授权

US06895183B2 Optical add-drop multiplexer 有权
标题翻译：光分插复用器
公开(公告)号：US06895183B2
公开(公告)日：2005-05-17
申请号：US10134479
申请日：2002-04-30
申请人： Hirofumi Shimomura , Naoya Henmi , Hitoshi Takeshita
发明人： Hirofumi Shimomura , Naoya Henmi , Hitoshi Takeshita
IPC分类号： H04B10/02 , H04B10/08 , H04J14/02
CPC分类号： H04B10/03 , H04B10/0771 , H04B2210/071 , H04B2210/072 , H04J14/0212 , H04J14/0216 , H04J14/0227 , H04J14/0241 , H04J14/0245 , H04J14/0249 , H04J14/0278 , H04J14/0283 , H04J14/0287 , H04J14/0293
摘要： An optical wavelength division coupler 11 wavelength-divides a wavelength multiplexed light to respective wavelength lights each of which is dropped to an optical gate switch 15-i (i=1˜n) and a light receiver 13-i by an optical coupler 12-i and supplied to an optical light fault monitor 14 through the light receiver 13-i. When the optical signal deterioration monitor 14 detects an optical loss of wavelength (OLOW), an optical loss of signal (OLOS) or an optical signal degrade (OSD) in wavelength lights processed by the optical coupler 12-i as a fault detection signal in an optical layer, a controller 19 controls the optical gate switch 15-i to cut off wavelength light passing therethrough and sends an optical alarm indication signal (AIS-O) to a downstream side. Therefore, when a loss of signal is detected by the light receiver 13-i, the optical signal deterioration monitor 14 can know the alarm indication signal (AIS) from the upstream side, removing the necessity of special hardware therefor.
摘要翻译：光波长分离耦合器11将波长复用的光分别波长到分别通过光耦合器12的光栅开关15-i（i = 1〜n）和光接收器13 -i的各波长光，并通过光接收器13 -i提供给光学灯故障监视器14。当光信号劣化监视器14检测到光学损耗波长（OLOW）时，由光耦合器12 -i处理的波长光中的光信号损失（OLOS）或光信号降级（OSD）作为故障检测信号光学层，控制器19控制光栅开关15 -i以截去通过其中的波长的光，并向下游侧发送光学报警指示信号（AIS-O）。因此，当由光接收器13 -i检测到信号丢失时，光信号劣化监视器14可以从上游侧知道报警指示信号（AIS），从而消除了特殊硬件的必要性。

8. 发明授权

US06404525B1 Optical add-drop multiplexer 失效
标题翻译：光分插复用器
公开(公告)号：US06404525B1
公开(公告)日：2002-06-11
申请号：US09123529
申请日：1998-07-28
申请人： Hirofumi Shimomura , Naoya Henmi , Hitoshi Takeshita
发明人： Hirofumi Shimomura , Naoya Henmi , Hitoshi Takeshita
IPC分类号： H04J1402
CPC分类号： H04B10/03 , H04B10/0771 , H04B2210/071 , H04B2210/072 , H04J14/0212 , H04J14/0216 , H04J14/0227 , H04J14/0241 , H04J14/0245 , H04J14/0249 , H04J14/0278 , H04J14/0283 , H04J14/0287 , H04J14/0293
摘要： An optical wavelength division coupler 11 wavelength-divides a wavelength multiplexed light to respective wavelength lights each of which is dropped to an optical gate switch 15-i (i=1˜n) and a light receiver 13-i by an optical coupler 12-i and supplied to an optical light fault monitor 14 through the light receiver 13-i. When the optical signal deterioration monitor 14 detects an optical loss of wavelength (OLOW), an optical loss of signal (OLOS) or an optical signal degrade (OSD) in wavelength lights processed by the optical coupler 12-i as a fault detection signal in an optical layer, a controller 19 controls the optical gate switch 15-i to cut off wavelength light passing therethrough and sends an optical alarm indication signal (AIS-O) to a downstream side. Therefore, when a loss of signal is detected by the light receiver 13-i, the optical signal deterioration monitor 14 can know the alarm indication signal (AIS) from the upstream side, removing the necessity of special hardware therefor.
摘要翻译：光波长分离耦合器11将波长复用的光分别通过光耦合器12-D将各个波长的光分别投射到光栅开关15-i（i = 1〜n）和光接收器13-i上，并通过光接收器13-i提供给光学灯故障监视器14。当光信号劣化监视器14检测到波长的光学损失（OLOW）时，由光耦合器12-i处理的波长光中的信号（OLOS）的光损失或光信号降级（OSD）作为故障检测信号光学层，控制器19控制光栅开关15-i截止通过的波长的光，向下游侧发送光学警报指示信号（AIS-O）。因此，当由光接收器13-i检测到信号丢失时，光信号劣化监视器14可以从上游侧知道报警指示信号（AIS），从而消除了特殊硬件的必要性。

9. 发明授权

US06271949B1 Optical communication system using wavelength-division multiplexed light 失效
标题翻译：光通信系统采用波分复用光
公开(公告)号：US06271949B1
公开(公告)日：2001-08-07
申请号：US08991049
申请日：1997-12-16
申请人： Yoshihiko Suemura , Naoya Henmi
发明人： Yoshihiko Suemura , Naoya Henmi
IPC分类号： H04J1402
CPC分类号： H04Q11/0005 , H04J14/02 , H04Q2011/0015 , H04Q2011/0022 , H04Q2011/0032 , H04Q2011/0075 , H04Q2011/0086
摘要： An optical wavelength selector is provided that selects WDM channels from WDM optical signal and outputs each WDM channels from a plurality of ports. WDM optical signal in which m×n WDM channels are multiplexed is divided into n WDM channel groups and outputted by means of one wavelength-division demultiplexer. One WDM channel group is selected from the n WDM channel groups by means of n optical gate switches. The selected WDM optical signal is then separated into m WDM channels by wavelength and outputted by means of an optical wavelength router. As a result, m WDM channels of a specific WDM channel group can be received by m optical receivers.
摘要翻译：提供一种光波长选择器，其从WDM光信号中选择WDM信道，并从多个端口输出每个WDM信道。其中m×n个WDM信道被多路复用的WDM光信号被分成n个WDM信道组，并通过一个波分解多路复用器输出。通过n个光栅开关从n个WDM信道组中选择一个WDM信道组。所选择的WDM光信号经波长分离为m个WDM信道，并通过光波长路由器输出。结果，m个光接收机可以接收特定WDM信道组的m个WDM信道。

10. 发明授权

US5392303A Frequency stabilization method of semiconductor laser, frequency-stabilized light source and laser module 失效
标题翻译：半导体激光器，频率稳定光源和激光模块的频率稳定方法
公开(公告)号：US5392303A
公开(公告)日：1995-02-21
申请号：US220223
申请日：1994-03-30
申请人： Takahiro Shiozawa , Masayuki Yamaguchi , Naoya Henmi
发明人： Takahiro Shiozawa , Masayuki Yamaguchi , Naoya Henmi
IPC分类号： H01S5/024 , H01S5/068 , H01S5/0687 , H01S3/13
CPC分类号： H01S5/06808 , H01S5/024 , H01S5/02415 , H01S5/06804 , H01S5/0687
摘要： A frequency stabilization method of a semiconductor laser is provided. A driving current, a forward voltage and an output light power of the laser mounted on a heat sink is detected. A temperature of the heat sink is also detected. A consumption power of the laser is obtained from the driving current and voltage thus detected, providing a relationship between the output light power and the consumption power. The driving current is controlled so that the output light power is kept constant, and the temperature of the heat sink is controlled based on the relationship so that a temperature of an active layer of the laser is maintained. The output light power is kept constant and at the same time, any temperature change of the active layer is cancelled through the temperature control of the heat sink. Even if the consumption power changes due to an leakage current and/or a recombination current without luminescence to maintain the output light power during long time operation, the temperature of the active layer is maintained by cancelling the consumption power change through the temperature control of the heat sink. Thus, the oscillation frequency of the semiconductor laser can be stabilized at a given value.
摘要翻译：提供半导体激光器的频率稳定方法。检测安装在散热器上的激光器的驱动电流，正向电压和输出光功率。还检测散热器的温度。从所检测的驱动电流和电压获得激光的消耗功率，提供输出光功率与消耗功率之间的关系。控制驱动电流，使得输出光功率保持恒定，并且基于保持激光器的有源层的温度的关系来控制散热器的温度。输出光功率保持恒定，同时通过散热器的温度控制来消除有源层的任何温度变化。即使消耗功率由于泄漏电流而变化，和/或没有发光的复合电流在长时间运行期间保持输出光功率，有源层的温度通过消除功率变化来维持散热器。因此，半导体激光器的振荡频率可以稳定在给定值。

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