公开(公告)号：US08068730B2

公开(公告)日：2011-11-29

申请号：US12219862

申请日：2008-07-29

申请人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04B10/08

CPC分类号： H04B10/07955 ,  H04J14/0212 ,  H04J14/0221

摘要： A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels which forms a wavelength division multiplex signal, and an approximation unit that determines a power level and a wavelength of each channel by approximating the power level in a plurality of wavelength bands which the measuring unit measured with the approximate waveform of each channel which the waveform determination unit determined.

摘要翻译： WDM信号监视系统包括测量单元，其测量关于波分多路复用信号的多个预定波长带中的功率电平;波形确定单元，其从每个比特率和多个调制系统的调制系统确定每个信道的近似波形 形成波分复用信号的通道，以及近似单元，其通过近似多个波长带中的功率电平来确定每个通道的功率电平和波长，所述多个波长带中测量单元用每个通道的近似波形测量波形 确定单位确定。

公开(公告)号：US20090041456A1

公开(公告)日：2009-02-12

申请号：US12219862

申请日：2008-07-29

申请人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Yoshito Kachita ,  Ichiro Nakajima ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04B10/07955 ,  H04J14/0212 ,  H04J14/0221

摘要： A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels which forms a wavelength division multiplex signal, and an approximation unit that determines a power level and a wavelength of each channel by approximating the power level in a plurality of wavelength bands which the measuring unit measured with the approximate waveform of each channel which the waveform determination unit determined.

摘要翻译： WDM信号监视系统包括测量单元，其测量关于波分多路复用信号的多个预定波长带中的功率电平;波形确定单元，其从每个比特率和多个调制系统的调制系统确定每个信道的近似波形 形成波分复用信号的通道，以及近似单元，其通过近似多个波长带中的功率电平来确定每个通道的功率电平和波长，所述多个波长带中测量单元用每个通道的近似波形测量波形 确定单位确定。

公开(公告)号：US20080199182A1

公开(公告)日：2008-08-21

申请号：US12068026

申请日：2008-01-31

申请人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/2513 ,  H04B10/2557 ,  H04J14/0201

摘要： A wavelength division multiplexing system according to the present art adjusts the amount of dispersion compensation (the amount of dispersion compensation of an NZ-DSF and a DCF) every all spans on the basis of the time slot when an intensity modulation signal transmitter outputs an intensity modulation signal and the wavelength interval when a wavelength coupler multiplexes a phase modulation signal (output from a phase modulation signal transmitter) and the intensity modulation signal.

摘要翻译： 根据本发明的波分复用系统根据强度调制信号发射机输出强度的时隙，调整每个跨度的色散补偿量（NZ-DSF和DCF的色散补偿量） 调制信号和波长耦合器复用相位调制信号（相位调制信号发射机的输出）和强度调制信号的波长间隔。

公开(公告)号：US07983564B2

公开(公告)日：2011-07-19

申请号：US12068026

申请日：2008-01-31

申请人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

发明人： Hiroki Ooi ,  Akira Miura ,  Takeshi Hoshida ,  Kentaro Nakamura ,  Yasushi Sugaya ,  Ryosuke Goto

IPC分类号： H04J14/02

CPC分类号： H04J14/02 ,  H04B10/2513 ,  H04B10/2557 ,  H04J14/0201

摘要： A wavelength division multiplexing system according to the present art adjusts the amount of dispersion compensation (the amount of dispersion compensation of an NZ-DSF and a DCF) every all spans on the basis of the time slot when an intensity modulation signal transmitter outputs an intensity modulation signal and the wavelength interval when a wavelength coupler multiplexes a phase modulation signal (output from a phase modulation signal transmitter) and the intensity modulation signal.

摘要翻译： 根据本发明的波分复用系统根据强度调制信号发射机输出强度的时隙，调整每个跨度的色散补偿量（NZ-DSF和DCF的色散补偿量） 调制信号和波长耦合器复用相位调制信号（相位调制信号发射机的输出）和强度调制信号的波长间隔。

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：US08681420B2

公开(公告)日：2014-03-25

申请号：US13169136

申请日：2011-06-27

申请人： Yasushi Sugaya ,  Takehiro Fujita

发明人： Yasushi Sugaya ,  Takehiro Fujita

IPC分类号： H04B10/17 ,  H04J1/00

CPC分类号： H01S3/06762 ,  H01S3/06766 ,  H01S3/06775 ,  H01S2301/06 ,  H04B10/2572 ,  H04B10/2941

摘要： An optical transmission system includes an optical transmitter that sends signal light to a transmission path, an optical receiver that receives the signal light from the transmission path, and an optical amplifier that is provided on the transmission path and that amplifies the signal light, the optical amplifier being configured to control a gain characteristic of the optical amplifier such that a power of signal light having a wavelength included within a wavelength range in which polarization hole burning occurs is higher than a power of another signal light having a wavelength outside the wavelength range.

摘要翻译： 一种光传输系统包括：向传输路径发送信号光的光发射机;接收来自传输路径的信号光的光接收机;以及设置在传输路径上并放大信号光的光放大器， 放大器被配置为控制光放大器的增益特性，使得包含在发生极化孔燃烧的波长范围内的波长的信号光的功率高于具有波长范围外的波长的另一信号光的功率。

公开(公告)号：US08553319B2

公开(公告)日：2013-10-08

申请号：US13097669

申请日：2011-04-29

申请人： Yasushi Sugaya ,  Susumu Kinoshita

发明人： Yasushi Sugaya ,  Susumu Kinoshita

IPC分类号： H04B10/12 ,  H04B10/17

CPC分类号： H01S3/06758 ,  H01S3/10015 ,  H01S3/1003 ,  H01S3/1301 ,  H01S2301/04 ,  H04B10/291 ,  H04B10/2912 ,  H04B10/2931 ,  H04B10/2942 ,  H04B10/296 ,  H04B2210/003 ,  H04J14/0221

摘要： An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal prior to the varying the number of channels. While the number of channels in the light signal is being varied, the controller maintains the light transmissivity of the optical attenuator to be constant. Subsequent to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an approximately constant level that depends on the number of channels in the light signal subsequent to the varying the number of channels.