公开(公告)号：US20080159753A1

公开(公告)日：2008-07-03

申请号：US12007591

申请日：2008-01-11

申请人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

发明人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

IPC分类号： H04B10/04

CPC分类号： H04B10/2933 ,  H04B10/0775 ,  H04B2210/078

摘要： An optical transmission system with automatic startup functions to optimize the power level of optical signals entering each optical amplifier and operate those amplifiers in appropriate mode. In the process of starting up an optical transmission system, upstream and downstream optical transmission devices set up themselves under the coordination of their internal controllers. The downstream device controller adjusts its local variable optical attenuator by utilizing optical noise emission from a post-amplifier in the upstream optical transmission device, and it selects and sets a preamplifier unit to work in appropriate operating mode. The upstream device controller, on the other hand, selects and sets operating mode of its local post-amplifier unit. During this process, the upstream and downstream device controllers exchange messages over supervisory control channels to achieve the purpose.

摘要翻译： 具有自动启动功能的光传输系统，用于优化进入每个光放大器的光信号的功率电平，并以适当的模式操作那些放大器。 在启动光传输系统的过程中，上下游光传输设备在内部控制器的协调下建立起自身。 下游设备控制器通过利用上游光传输设备中的后置放大器的光噪声发射来调整其局部可变光衰减器，并且选择并设置前置放大器单元以适当的操作模式工作。 另一方面，上游设备控制器选择并设置其本地后置放大器单元的操作模式。 在此过程中，上游和下游设备控制器通过监控控制通道交换信息，达到目的。

公开(公告)号：US07509055B2

公开(公告)日：2009-03-24

申请号：US12007591

申请日：2008-01-11

申请人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

发明人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

IPC分类号： H04B10/00

CPC分类号： H04B10/2933 ,  H04B10/0775 ,  H04B2210/078

摘要： An optical transmission system with automatic startup functions to optimize the power level of optical signals entering each optical amplifier and operate those amplifiers in appropriate mode. In the process of starting up an optical transmission system, upstream and downstream optical transmission devices set up themselves under the coordination of their internal controllers. The downstream device controller adjusts its local variable optical attenuator by utilizing optical noise emission from a post-amplifier in the upstream optical transmission device, and it selects and sets a preamplifier unit to work in appropriate operating mode. The upstream device controller, on the other hand, selects and sets operating mode of its local post-amplifier unit. During this process, the upstream and downstream device controllers exchange messages over supervisory control channels to achieve the purpose.

摘要翻译： 具有自动启动功能的光传输系统，用于优化进入每个光放大器的光信号的功率电平，并以适当的模式操作那些放大器。 在启动光传输系统的过程中，上下游光传输设备在内部控制器的协调下建立起自身。 下游设备控制器通过利用上游光传输设备中的后置放大器的光噪声发射来调整其局部可变光衰减器，并且选择并设置前置放大器单元以适当的操作模式工作。 另一方面，上游设备控制器选择并设置其本地后置放大器单元的操作模式。 在此过程中，上游和下游设备控制器通过监控控制通道交换信息，达到目的。

公开(公告)号：US20050158057A1

公开(公告)日：2005-07-21

申请号：US10898541

申请日：2004-07-26

申请人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

发明人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

IPC分类号： H04B10/07 ,  H04B10/077 ,  H04B10/079 ,  H04B10/293 ,  H04B10/296 ,  H04B10/297 ,  H04B10/564 ,  H04B10/572 ,  H04J14/00 ,  H04J14/02 ,  H04B10/00

CPC分类号： H04B10/2933 ,  H04B10/0775 ,  H04B2210/078

摘要： An optical transmission system with automatic startup functions to optimize the power level of optical signals entering each optical amplifier and operate those amplifiers in appropriate mode. In the process of starting up an optical transmission system, upstream and downstream optical transmission devices set up themselves under the coordination of their internal controllers. The downstream device controller adjusts its local variable optical attenuator by utilizing optical noise emission from a post-amplifier in the upstream optical transmission device, and it selects and sets a preamplifier unit to work in appropriate operating mode. The upstream device controller, on the other hand, selects and sets operating mode of its local post-amplifier unit. During this process, the upstream and downstream device controllers exchange messages over supervisory control channels to achieve the purpose.

摘要翻译： 具有自动启动功能的光传输系统，用于优化进入每个光放大器的光信号的功率电平，并以适当的模式操作那些放大器。 在启动光传输系统的过程中，上下游光传输设备在内部控制器的协调下建立起自身。 下游设备控制器通过利用上游光传输设备中的后置放大器的光噪声发射来调整其局部可变光衰减器，并且选择并设置前置放大器单元以适当的操作模式工作。 另一方面，上游设备控制器选择并设置其本地后置放大器单元的操作模式。 在此过程中，上游和下游设备控制器通过监控控制通道交换信息，达到目的。

公开(公告)号：US07343102B2

公开(公告)日：2008-03-11

申请号：US10898541

申请日：2004-07-26

申请人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

发明人： Hiroaki Tomofuji ,  Takuji Maeda ,  Taizo Maeda ,  Hideki Kobayashi ,  Tatsuo Nagayoshi ,  Tetsuo Wada

IPC分类号： H04B10/00

CPC分类号： H04B10/2933 ,  H04B10/0775 ,  H04B2210/078

摘要： An optical transmission system with automatic startup functions to optimize the power level of optical signals entering each optical amplifier and operate those amplifiers in appropriate mode. In the process of starting up an optical transmission system, upstream and downstream optical transmission devices set up themselves under the coordination of their internal controllers. The downstream device controller adjusts its local variable optical attenuator by utilizing optical noise emission from a post-amplifier in the upstream optical transmission device, and it selects and sets a preamplifier unit to work in appropriate operating mode. The upstream device controller, on the other hand, selects and sets operating mode of its local post-amplifier unit. During this process, the upstream and downstream device controllers exchange messages over supervisory control channels to achieve the purpose.

公开(公告)号：US20060127101A1

公开(公告)日：2006-06-15

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/00

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入引脚的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US07970286B2

公开(公告)日：2011-06-28

申请号：US12543858

申请日：2009-08-19

申请人： Taizo Maeda

发明人： Taizo Maeda

IPC分类号： H04B10/00

CPC分类号： H04J14/0221 ,  H04B10/0777 ,  H04B10/2935 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213

摘要： In a wavelength-division multiplexing communications system including a plurality of optical transmission devices having an optical amplifier, downstream optical transmission devices transmit gain wavelength characteristic information of an optical amplifier in each of the downstream optical transmission devices to an upstream optical transmission device. The upstream optical transmission device controls gain wavelength characteristics on the basis of the received gain wavelength characteristic information.

摘要翻译： 在包括具有光放大器的多个光传输装置的波分多路复用通信系统中，下游光传输装置将下游光传输装置中的每一个的光放大器的增益波长特性信息发送到上游光传输装置。 上游光传输装置根据接收的增益波长特性信息控制增益波长特性。

公开(公告)号：US07619813B2

公开(公告)日：2009-11-17

申请号：US11155537

申请日：2005-06-20

申请人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

发明人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04J14/0212 ,  H04B10/296 ,  H04B2210/258 ,  H04J14/0221

摘要： A wavelength division multiplexing (WDM) device, an optical leakage prevention method, and a WDM communication system are disclosed. The WDM device includes a level adjusting unit for receiving an optical signal, for adjusting the optical power level of the received optical signal, and for outputting the level-adjusted optical signal; and a controlling unit for analyzing the optical power level of the optical signal output from the level adjusting unit, for controlling the level adjusting unit so that the optical power level of the output optical signal stays at a constant level, and for transitioning to an “off-state” when the optical power level of the output optical signal becomes less than a predetermined disconnection-detection threshold so that the level adjusting unit gives a predetermined attenuation to the input optical signal. The controlling unit transitions from the “off-state” when the optical power level of the output optical signal is greater than a predetermined recovery threshold and an upstream WDM device is not in the “off-state”.

摘要翻译： 公开了一种波分复用（WDM）设备，防漏漏方法和WDM通信系统。 WDM装置包括：电平调整单元，用于接收光信号，用于调整接收到的光信号的光功率电平，并输出电平调整的光信号; 以及控制单元，用于分析从电平调整单元输出的光信号的光功率电平，用于控制电平调整单元，使得输出光信号的光功率电平保持在恒定电平，并转换到“ 当输出光信号的光功率电平变得小于预定的断开检测阈值时，电平调节单元给输入光信号预定的衰减。 当输出光信号的光功率电平大于预定恢复阈值并且上游WDM设备不处于“关闭状态”时，控制单元从“截止状态”转变。

公开(公告)号：US08611446B2

公开(公告)日：2013-12-17

申请号：US12623850

申请日：2009-11-23

申请人： Taizo Maeda ,  Motoyoshi Sekiya ,  Takuya Miyashita ,  Rikiya Watanabe

发明人： Taizo Maeda ,  Motoyoshi Sekiya ,  Takuya Miyashita ,  Rikiya Watanabe

IPC分类号： H04L5/12

CPC分类号： H04L25/03248 ,  H04L25/03318

摘要： A communication system is provided for communicating over a network. A plurality of transmission devices are disposed within a network and connected by transmission channels. A control device calculates initial data required during an initial operation of the transmission devices and sets the initial data to the transmission devices. The transmission devices perform reception processing using maximum likelihood sequence estimation, and the control device obtains, as the initial data, with respect to paths that are signal communication pathways between the transmission devices and in accordance with transmission states of individual paths, initial likelihood information that is initial-stage likelihood information for performing the maximum likelihood sequence estimation.

摘要翻译： 提供一种通过网络通信的通信系统。 多个传输设备被布置在网络内并通过传输信道连接。 控制装置计算在发送装置的初始操作期间所需的初始数据，并将初始数据设置为发送装置。 传输设备使用最大似然序列估计来执行接收处理，并且控制设备获得关于作为发送设备之间的信号通信路径的路径并且根据各个路径的传输状态作为初始数据，初始似然信息 是用于执行最大似然序列估计的初始阶段似然信息。

公开(公告)号：US20100128809A1

公开(公告)日：2010-05-27

申请号：US12623850

申请日：2009-11-23

申请人： Taizo Maeda ,  Motoyoshi Sekiya ,  Takuya Miyashita ,  Rikiya Watanabe

发明人： Taizo Maeda ,  Motoyoshi Sekiya ,  Takuya Miyashita ,  Rikiya Watanabe

IPC分类号： H04L5/12

CPC分类号： H04L25/03248 ,  H04L25/03318

摘要： A communication system is provided for communicating over a network. A plurality of transmission devices are disposed within a network and connected by transmission channels. A control device calculates initial data required during an initial operation of the transmission devices and sets the initial data to the transmission devices. The transmission devices perform reception processing using maximum likelihood sequence estimation, and the control device obtains, as the initial data, with respect to paths that are signal communication pathways between the transmission devices and in accordance with transmission states of individual paths, initial likelihood information that is initial-stage likelihood information for performing the maximum likelihood sequence estimation.

摘要翻译： 提供一种通过网络通信的通信系统。 多个传输设备设置在网络内并通过传输信道连接。 控制装置计算在发送装置的初始操作期间所需的初始数据，并将初始数据设置为发送装置。 传输设备使用最大似然序列估计来执行接收处理，并且控制设备获得关于作为发送设备之间的信号通信路径的路径并且根据各个路径的传输状态作为初始数据，初始似然信息 是用于执行最大似然序列估计的初始阶段似然信息。

公开(公告)号：US20060221435A1

公开(公告)日：2006-10-05

申请号：US11155537

申请日：2005-06-20

申请人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

发明人： Taizo Maeda ,  Satoru Okano ,  Takehiro Fujita

IPC分类号： H01S3/00

CPC分类号： H04J14/0212 ,  H04B10/296 ,  H04B2210/258 ,  H04J14/0221

摘要： A wavelength division multiplexing (WDM) device, an optical leakage prevention method, and a WDM communication system are disclosed. The WDM device includes a level adjusting unit for receiving an optical signal, for adjusting the optical power level of the received optical signal, and for outputting the level-adjusted optical signal; and a controlling unit for analyzing the optical power level of the optical signal output from the level adjusting unit, for controlling the level adjusting unit so that the optical power level of the output optical signal stays at a constant level, and for transitioning to an “off-state” when the optical power level of the output optical signal becomes less than a predetermined disconnection-detection threshold so that the level adjusting unit gives a predetermined attenuation to the input optical signal. The controlling unit transitions from the “off-state” when the optical power level of the output optical signal is greater than a predetermined recovery threshold and an upstream WDM device is not in the “off-state”.