公开(公告)号：US08615167B2

公开(公告)日：2013-12-24

申请号：US13230048

申请日：2011-09-12

申请人： Yasushi Sugaya ,  Takehiro Fujita ,  Satoru Okano

发明人： Yasushi Sugaya ,  Takehiro Fujita ,  Satoru Okano

IPC分类号： H04B10/08 ,  H04J14/02

CPC分类号： H04B10/2935 ,  H04B10/294 ,  H04J14/0221

摘要： A WDM optical transmission system includes a plurality of optical nodes optically coupled by a transmission line, a processor that is operative to calculate an amount of adjustment of a reception level capable of increasing an optical signal-to-noise ratio for each channel of the WDM light reaching the optical node positioned at a receiving end of the unit section based on information on amplification operation of the WDM light in at least one optical-amplification repeating node disposed on the optical transmission line in the unit section, and to adjust a power level corresponding to each channel of the WDM light transmitted on the transmission line from the optical node positioned at a transmission end of the unit section in accordance with a calculation result of the calculation.

摘要翻译： WDM光传输系统包括通过传输线光耦合的多个光学节点，处理器，其可操作以计算能够增加WDM的每个信道的光信噪比的接收电平的调整量 基于设置在单元部分中的光传输线路上的至少一个光放大重复节点中的WDM光的放大操作的信息的信息，到位于单元部分的接收端的光节点的光，并且调整功率电平 对应于根据计算的计算结果，从位于单元部分的发送端的光节点在传输线上传输的WDM光的每个信道。

公开(公告)号：US07522839B2

公开(公告)日：2009-04-21

申请号：US11319376

申请日：2005-12-29

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04B10/08 ,  H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

公开(公告)号：US07650072B2

公开(公告)日：2010-01-19

申请号：US12399275

申请日：2009-03-06

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04B10/00 ,  H04B10/08 ,  H04B10/12 ,  H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

公开(公告)号：US20090226167A1

公开(公告)日：2009-09-10

申请号：US12399275

申请日：2009-03-06

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04J14/00

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

公开(公告)号：US20080002978A1

公开(公告)日：2008-01-03

申请号：US11319376

申请日：2005-12-29

申请人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

发明人： Miki Onaka ,  Yasushi Sugaya ,  Takahumi Terahara ,  Satoru Okano ,  Takehiro Fujita ,  Hiroaki Tomofuji ,  Ichiro Nakajima

IPC分类号： H04B10/16

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0212 ,  H04J14/0219

摘要： An optical node apparatus according to the present invention amplifies a WDM signal light input to an input port, and thereafter, branches the amplified WDM signal light by an optical branching coupler to send the branched lights to first and second optical paths, and selects the light propagated through the first optical path by an optical switch to amplify the selected light by a post-amplifier, thereby outputting the amplified light from an output port, when the optical node apparatus is operated as an optical amplification repeating node. When the operational state is upgraded to an optical add/drop multiplexing node, an OADM section is connected between a set of connecting ports on the second optical path, and the adjustment of the OADM section is performed utilizing the WDM signal light branched by the optical branching coupler, and thereafter, the switching of the optical switch is performed to select the light on the second optical path side. As a result, since the switching the operational state from the optical amplification repeating node to the OADM node can be performed in a short time, it becomes possible to provide the continued communication service at the low initial installation cost.

摘要翻译： 根据本发明的光节点装置放大输入到输入端口的WDM信号光，然后通过光分路耦合器对放大的WDM信号光进行分支，以将分支光发送到第一和第二光路，并选择光 通过光开关通过第一光路传播，以通过后置放大器放大所选择的光，从而当光节点装置作为光放大重复节点工作时，从输出端口输出放大的光。 当操作状态升级为光分插复用节点时，OADM部分连接在第二光路上的一组连接端口之间，并且利用由光学分支的WDM信号光进行OADM部分的调整 分支耦合器，然后进行光开关的切换以选择第二光路侧的光。 结果，由于可以在短时间内将操作状态从光放大重复节点切换到OADM节点，所以可以以低的初始安装成本提供持续的通信服务。

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”.

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：US07542677B2

公开(公告)日：2009-06-02

申请号：US11892302

申请日：2007-08-21

申请人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

发明人： Motoyoshi Sekiya ,  Kazuo Yamane ,  Ryosuke Goto ,  Satoru Okano ,  Takehito Okeno

IPC分类号： H04J14/02 ,  H04B10/12 ,  H04B10/001

CPC分类号： H04B10/25253 ,  H04B2210/256 ,  H04J14/0206 ,  H04J14/0213

摘要： Dispersion compensation values are set so as to be transmittable to any path groups in a WDM optical communication system having OADM nodes, which includes transmitting-end and receiving-end terminal nodes; a WDM optical communication transmission line including a plurality of spans each having an optical fiber, the plurality of spans joining the transmitting-end and receiving-end terminal nodes; and a plurality of add drop multiplexing (OADM) nodes disposed on the optical communication transmission line; wherein when taking as the reference a residual dispersion target value of between the transmitting-end terminal and receiving-end terminal nodes, a residual dispersion target value for a node segment between one of the terminal nodes and one of the add drop multiplexing (OADM) nodes and a residual dispersion target value for a node-to-node segment between two of the add drop multiplexing (OADM) nodes are set so as to be proportional to ratios of the span counts in the node segment and in the node-to-node segment, respectively, to the total span count between the transmitting-end and receiving-end terminal nodes.

摘要翻译： 色散补偿值被设置为可以发送到具有包括发送端和接收端终端节点的OADM节点的WDM光通信系统中的任何路径组; WDM光通信传输线，其包括多个具有光纤的跨度，所述多个跨接器连接所述发送端和接收端终端节点; 以及设置在所述光通信传输线上的多个添加分集复用（OADM）节点; 其中，当以发送端终端和接收端终端节点之间的残留分散目标值作为参考时，在一个终端节点之间的节点的剩余分散目标值与加法分集复用（OADM）之一之间， 节点和两个添加分集复用（OADM）节点之间的节点到节点分段的残余分散目标值被设置成与节点分段和节点到节点中的跨度计数的比率成比例， 节点段分别为发送端和接收端终端之间的总宽度计数。

公开(公告)号：US20080056726A1

公开(公告)日：2008-03-06

申请号：US11878222

申请日：2007-07-23

申请人： Hideaki Sugiya ,  Satoru Okano

发明人： Hideaki Sugiya ,  Satoru Okano

IPC分类号： H04B10/02

CPC分类号： H04B10/25133

摘要： A dispersion compensation apparatus includes a dispersion compensation unit that conducts dispersion compensation on an optical signal sent from a transmitting device through a transmission path. The dispersion compensation unit includes a switch that switches a path of the optical signal between a first path and a second path, and that latches to one of the first path and the second path to which the path is switched; and a fixed dispersion compensation unit that is provided on the second path, and that conducts dispersion compensation at a fixed level upon an optical signal passing through the second path.

摘要翻译： 色散补偿装置包括色散补偿单元，其通过传输路径对从发送装置发送的光信号进行色散补偿。 色散补偿单元包括：切换光信号在第一路径和第二路径之间的路径的开关，并且锁存到路径切换到的第一路径和第二路径之一; 以及固定色散补偿单元，设置在第二路径上，并且在通过第二路径的光信号上以固定电平进行色散补偿。

公开(公告)号：US06823141B2

公开(公告)日：2004-11-23

申请号：US09749774

申请日：2000-12-28

申请人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

发明人： Akira Miyauchi ,  Kazuo Yamane ,  Yumiko Kawasaki ,  Satoru Okano

IPC分类号： H04B1000

CPC分类号： H04B10/25137 ,  H04B10/25133 ,  H04B2210/252

摘要： In an optical transmission system comprising a transmitter, a receiver, and a transmission line that connects the transmitter and the receiver, a dispersion compensator is disposed in the receiver. The transmitter comprises an E/O (electro-optical signal converter) and a post-amplifier. An optical signal that has been RZ-coded is supplied to the E/O. The transmitter pre-chirps the optical signal. The pre-chirp is performed by red-chirp of which the value of the chirping parameter &agr; is positive. When the pre-chirp is performed, the non-linear effect of the optical signal on the transmission line can be canceled. In addition, with the RZ coded signal, the inter-symbol interference can be alleviated. Thus, the total dispersion amount of the dispersion compensator can be suppressed. In addition, the power of the optical output can be increased.

摘要翻译： 在包括发射机，接收机和连接发射机和接收机的传输线的光传输系统中，在接收机中设置色散补偿器。 发射机包括E / O（电光信号转换器）和后置放大器。 经RZ编码的光信号被提供给E / O。 发射机预啁啾光信号。 前线啁啾由啁啾声执行，啁啾参数α的值为正。 当进行前啁啾时，可以消除光信号在传输线上的非线性效应。 另外，利用RZ编码信号，可以减轻符号间干扰。 因此，可以抑制色散补偿器的总色散量。 此外，可以增加光输出的功率。