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1. 发明授权

US08538264B2 Dispersion compensating apparatus, dispersion compensating method, optical receiving apparatus, and optical receiving method 有权
标题翻译：色散补偿装置，色散补偿方法，光接收装置和光接收方法
公开(公告)号：US08538264B2
公开(公告)日：2013-09-17
申请号：US12788773
申请日：2010-05-27
申请人： Masahiro Yuki , Tsukasa Takahashi , Miki Onaka , Norifumi Shukunami , Tatsuya Tsuzuki , Toshihiro Ohtani , Ryosuke Goto
发明人： Masahiro Yuki , Tsukasa Takahashi , Miki Onaka , Norifumi Shukunami , Tatsuya Tsuzuki , Toshihiro Ohtani , Ryosuke Goto
IPC分类号： H04B10/00 , H04B10/12 , H04J14/02
CPC分类号： H04B10/25133
摘要： A dispersion compensating apparatus includes a tunable dispersion compensator that dispersion-compensates an optical signal using a group delay property that is asymmetrical in bands outside an effective band; a set device that sets a dispersion compensation amount in the tunable dispersion compensator; and a shifter that shifts a central frequency of the effective band of the tunable dispersion compensator, based on the dispersion compensation amount set by the set device.
摘要翻译：色散补偿装置包括可调色散补偿器，其使用在有效频带之外的频带中不对称的组延迟特性对光信号进行色散补偿; 设置可调色散补偿器中的色散补偿量的集合装置; 以及基于由所述设定装置设定的色散补偿量，使所述可调色散补偿器的有效频带的中心频率偏移的移位器。

2. 发明授权

US07692849B2 Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system using same 失效
标题翻译：测量非线性光学性质的方法，以及使用其的光放大器和光传输系统
公开(公告)号：US07692849B2
公开(公告)日：2010-04-06
申请号：US11822841
申请日：2007-07-10
申请人： Norifumi Shukunami , Tatsuya Tsuzuki
发明人： Norifumi Shukunami , Tatsuya Tsuzuki
IPC分类号： H04B10/17 , H04B10/12
CPC分类号： G01M11/33 , G01M11/319 , H04B10/255
摘要： In an optical amplifier of the present invention, an input light is supplied to one end of an optical fiber connected to an output port, and the power of a light in an opposite direction which is input to the output port from the one end of the optical fiber, is measured, thereby obtaining a stimulated Brillouin scattering (SBS) occurrence threshold in the optical fiber based on the measurement result. Then, using the SBS occurrence threshold, a relation been the input light power and an occurrence amount of the self phase modulation (SPM) or the like in the optical fiber is obtained to be reflected on a control of the optical amplifier, so that an occurrence of the SPM or the like in the optical fiber is suppressed. As a result, it becomes possible to accurately measure, with a simple configuration, the nonlinear optical properties of the optical fiber actually connected to the output port of the optical amplifier, so that the optical S/N ratio degradation due to a nonlinear optical effect can be effectively suppressed.
摘要翻译：在本发明的光放大器中，输入光被提供给连接到输出端口的光纤的一端，并且从与所述输出端口的一端输入到输出端口的相反方向的光的功率光纤，从而基于测量结果在光纤中获得受激布里渊散射（SBS）发生阈值。然后，使用SBS发生阈值，获得输入光功率和光纤中的自相位调制（SPM）等的发生量的关系，以反映在光放大器的控制上，使得抑制光纤中的SPM等的发生。结果，可以以简单的结构精确地测量实际连接到光放大器的输出端口的光纤的非线性光学特性，使得由于非线性光学效应导致的光S / N比劣化可以有效地抑制。

3. 发明申请

US20110236023A1 SIGNAL LIGHT PROCESSING APPARATUS, LIGHT TRANSMISSION APPARATUS, WAVELENGTH SELECTION SWITCH, WAVELENGTH DIVISION MULTIPLEXING TRANSMISSION SYSTEM, AND SIGNAL LIGHT PROCESSING METHOD 审中-公开
标题翻译：信号光处理装置，光传输装置，波长选择开关，波长段多路传输系统和信号光处理方法
公开(公告)号：US20110236023A1
公开(公告)日：2011-09-29
申请号：US13028619
申请日：2011-02-16
申请人： Norifumi Shukunami , Tatsuya Tsuzuki , Kentaro Nakamura
发明人： Norifumi Shukunami , Tatsuya Tsuzuki , Kentaro Nakamura
IPC分类号： H04J14/02
CPC分类号： H04J14/0212 , G02B6/2931 , G02B6/29394 , G02B6/3512 , G02B6/356 , H04B10/25133
摘要： A signal light processing apparatus includes a first wavelength selection switch, a dispersion compensator, and a second wavelength selection switch. The first wavelength selection switch divides an input wavelength-multiplexed signal light into signal lights of each wavelength and outputs the signal lights from a first output port or a second output port in accordance with wavelengths of the divided signal lights. The dispersion compensator compensates dispersion compensation on the signal light output from the first output port by the first wavelength selection switch. The second wavelength selection switch combines the signal light on which dispersion compensation is compensated by the dispersion compensator and the signal light output from the second output port by the first wavelength selection switch.
摘要翻译：信号光处理装置包括第一波长选择开关，色散补偿器和第二波长选择开关。第一波长选择开关将输入的波多路复用信号光分成各波长的信号光，并根据分频信号光的波长从第一输出端口或第二输出端口输出信号光。色散补偿器补偿由第一波长选择开关从第一输出端口输出的信号光的色散补偿。第二波长选择开关将通过色散补偿器补偿色散补偿的信号光和由第一波长选择开关从第二输出端口输出的信号光组合。

4. 发明授权

US07929201B2 Multistage optical amplifier with gain control using pump ratio 有权
标题翻译：具有增益控制的多级光放大器使用泵比
公开(公告)号：US07929201B2
公开(公告)日：2011-04-19
申请号：US12213565
申请日：2008-06-20
申请人： Tatsuya Tsuzuki , Norifumi Shukunami , Yuji Tamura , Yoshio Shimano , Masao Nakata , Takashi Satou
发明人： Tatsuya Tsuzuki , Norifumi Shukunami , Yuji Tamura , Yoshio Shimano , Masao Nakata , Takashi Satou
IPC分类号： H04B10/17 , H04B10/12
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S2301/04
摘要： According to an aspect of the embodiment of the invention, an optical amplifier including an input port, an output port, a plurality of amplifying parts, an optical attenuator, a gain controller and an optical attenuator controller. The plurality of amplifying parts includes an optical amplification medium and a pumping light source for generating pump light. The optical attenuator is optically connected between the amplifying parts. The gain controller controls the pump light power of the pump sources, respectively, in such a way that the ratio decreases in accordance with the gain set value increasing and the ratio interpose between a first threshold level and a second threshold level. The optical attenuator controller controls attenuation of the optical attenuator in order to maintain the sum of generating gains of the amplifying parts in the gain set value in accordance with a state of the signal light inputted into the input port.
摘要翻译：根据本发明实施例的一个方面，一种包括输入端口，输出端口，多个放大部件，光衰减器，增益控制器和光衰减器控制器的光放大器。多个放大部件包括光放大介质和用于产生泵浦光的泵浦光源。光衰减器光学连接在放大部件之间。增益控制器分别控制泵浦源的泵浦光功率，使得该比率根据增益设定值增加而减小，并且比例介于第一阈值水平和第二阈值水平之间。光衰减器控制器控制光衰减器的衰减，以便根据输入到输入端口的信号光的状态将放大部分的增益的总和保持在增益设定值中。

5. 发明授权

US08861965B2 Optical transmission apparatus 有权
标题翻译：光传输装置
公开(公告)号：US08861965B2
公开(公告)日：2014-10-14
申请号：US13238152
申请日：2011-09-21
申请人： Kentaro Nakamura , Norifumi Shukunami , Tatsuya Tsuzuki
发明人： Kentaro Nakamura , Norifumi Shukunami , Tatsuya Tsuzuki
IPC分类号： H04J14/02
CPC分类号： H04J14/0212 , H04J14/0221
摘要： There is provided an optical transmission apparatus including: a transmitter to output an optical signal to be transferred to other optical transmission apparatus; a first dummy light source to generate first dummy light having a wavelength which is not included in an optical signal received from other optical transmission apparatus; a first wavelength-multiplexer to wavelength-multiplex the optical signal received from other optical transmission apparatus, the optical signal output from the transmitter, and an optical signal with a wavelength, of the first dummy light, which is not included in the optical signal received from other optical transmission apparatus and in the optical signal output from the transmitter; and an optical amplifier to amplify an optical signal multiplexed by the first wavelength-multiplexer.
摘要翻译：提供了一种光传输装置，包括：发射机，用于输出要传送到其他光传输装置的光信号; 第一虚拟光源，用于产生具有不包括在从其他光传输装置接收的光信号中的波长的第一虚拟光; 第一波长多路复用器，用于波长复用从其他光传输装置接收的光信号，从发射机输出的光信号和第一虚拟光的波长的光信号，其不包括在接收到的光信号中来自其他光传输装置和从发射机输出的光信号; 以及放大由第一波长多路复用器复用的光信号的光放大器。

6. 发明申请

US20120106968A1 OPTICAL TRANSMISSION APPARATUS 有权
标题翻译：光传输装置
公开(公告)号：US20120106968A1
公开(公告)日：2012-05-03
申请号：US13238152
申请日：2011-09-21
申请人： Kentaro NAKAMURA , Norifumi Shukunami , Tatsuya Tsuzuki
发明人： Kentaro NAKAMURA , Norifumi Shukunami , Tatsuya Tsuzuki
IPC分类号： H04B10/04 , H04J14/02
CPC分类号： H04J14/0212 , H04J14/0221
摘要： There is provided an optical transmission apparatus including: a transmitter to output an optical signal to be transferred to other optical transmission apparatus; a first dummy light source to generate first dummy light having a wavelength which is not included in an optical signal received from other optical transmission apparatus; a first wavelength-multiplexer to wavelength-multiplex the optical signal received from other optical transmission apparatus, the optical signal output from the transmitter, and an optical signal with a wavelength, of the first dummy light, which is not included in the optical signal received from other optical transmission apparatus and in the optical signal output from the transmitter; and an optical amplifier to amplify an optical signal multiplexed by the first wavelength-multiplexer.
摘要翻译：提供了一种光传输装置，包括：发射机，用于输出要传送到其他光传输装置的光信号; 第一虚拟光源，用于产生具有不包括在从其他光传输装置接收的光信号中的波长的第一虚拟光; 第一波长多路复用器，用于波长复用从其他光传输装置接收的光信号，从发射机输出的光信号和第一虚拟光的波长的光信号，其不包括在接收到的光信号中来自其他光传输装置和从发射机输出的光信号; 以及放大由第一波长多路复用器复用的光信号的光放大器。

7. 发明申请

US20120006977A1 OPTICAL AMPLIFIER AND LIGHT RECEIVING DEVICE 审中-公开
标题翻译：光放大器和光接收装置
公开(公告)号：US20120006977A1
公开(公告)日：2012-01-12
申请号：US13234669
申请日：2011-09-16
申请人： Norifumi SHUKUNAMI , Tatsuya Tsuzuki
发明人： Norifumi SHUKUNAMI , Tatsuya Tsuzuki
IPC分类号： H01J43/00 , H01S3/10
CPC分类号： H01S3/06754 , H01S3/0064 , H01S3/0078 , H01S3/06758 , H01S2301/02 , H01S2301/04 , H04B10/294 , H04B10/673
摘要： An optical amplifier includes an optical signal path that optically couples an input port and an output port, and transmits an optical signal input from the input port to the output port; an optical amplification medium that is arranged in the optical signal path, and amplifies the optical signal in a predetermined amplification wavelength band; and an optical filter that is arranged between the optical amplification medium and the output port in the optical signal path, flattens gain wavelength characteristics of the optical amplification medium in the amplification wavelength band, and attenuates amplified spontaneous emission (ASE) at a center of the amplification wavelength band more greatly than ASE at both sides of the amplification wavelength band among ASE that occurs in the optical amplification medium on the optical signal amplified by the optical amplification medium.
摘要翻译：光放大器包括光输入端口和输出端口光耦合的光信号路径，并将从输入端口输入的光信号传输到输出端口; 布置在光信号路径中的光放大介质，并以预定的放大波长带放大光信号; 并且在光信号路径中配置在光放大介质与输出口之间的光滤波器，使放大波段的光放大介质的增益波长特性平坦化，并使放大的自发辐射（ASE）在在光放大介质中在由光放大介质放大的光信号上出现的ASE之间的放大波长带两侧的ASE的放大波长带更大。

8. 发明申请

US20100142945A1 Method for measuring nonlinear optical properties 有权
标题翻译：非线性光学特性测量方法
公开(公告)号：US20100142945A1
公开(公告)日：2010-06-10
申请号：US12656686
申请日：2010-02-12
申请人： Norifumi Shukunami , Tatsuya Tsuzuki
发明人： Norifumi Shukunami , Tatsuya Tsuzuki
IPC分类号： H04B10/08
CPC分类号： G01M11/33 , G01M11/319 , H04B10/255
摘要： In an optical amplifier, an input light is supplied to one end of an optical fiber connected to an output port, and the power of a light in an opposite direction which is input to the output port from the one end of the optical fiber, is measured, thereby obtaining a stimulated Brillouin scattering (SBS) occurrence threshold in the optical fiber based on the measurement result. Then, using the SBS occurrence threshold, a relation between the input light power and an occurrence amount of the self phase modulation (SPM) or the like in the optical fiber is obtained to be reflected on a control of the optical amplifier, so that an occurrence of the SPM or the like in the optical fiber is suppressed. As a result, it becomes possible to accurately measure, with a simple configuration, the nonlinear optical properties of the optical fiber actually connected to the output port of the optical amplifier, so that the optical S/N ratio degradation due to a nonlinear optical effect can be effectively suppressed.
摘要翻译：在光放大器中，输入光被提供到连接到输出端口的光纤的一端，并且从光纤的一端输入到输出端口的相反方向的光的功率为测量，从而基于测量结果在光纤中获得受激布里渊散射（SBS）出现阈值。然后，使用SBS发生阈值，获得输入光功率与光纤中的自相位调制（SPM）等的发生量之间的关系，以反映在光放大器的控制上，使得抑制光纤中的SPM等的发生。结果，可以以简单的结构精确地测量实际连接到光放大器的输出端口的光纤的非线性光学特性，使得由于非线性光学效应导致的光S / N比劣化可以有效地抑制。

9. 发明申请

US20080316591A1 Optical amplifier 有权
标题翻译：光放大器
公开(公告)号：US20080316591A1
公开(公告)日：2008-12-25
申请号：US12213565
申请日：2008-06-20
申请人： Tatsuya Tsuzuki , Norifumi Shukunami , Yuji Tamura , Yoshio Shimano , Masao Nakata , Takashi Satou
发明人： Tatsuya Tsuzuki , Norifumi Shukunami , Yuji Tamura , Yoshio Shimano , Masao Nakata , Takashi Satou
IPC分类号： H01S3/00
CPC分类号： H04B10/2942 , H01S3/06758 , H01S3/1301 , H01S2301/04
摘要： According to an aspect of the embodiment of the invention, an optical amplifier including an input port, an output port, a plurality of amplifying parts, an optical attenuator, a gain controller and an optical attenuator controller. The plurality of amplifying parts includes an optical amplification medium and a pumping light source for generating pump light. The optical attenuator is optically connected between the amplifying parts. The gain controller controls the pump light power of the pump sources, respectively, in such a way that the ratio decreases in accordance with the gain set value increasing and the ratio interpose between a first threshold level and a second threshold level. The optical attenuator controller controls attenuation of the optical attenuator in order to maintain the sum of generating gains of the amplifying parts in the gain set value in accordance with a state of the signal light inputted into the input port.
摘要翻译：根据本发明实施例的一个方面，一种包括输入端口，输出端口，多个放大部件，光衰减器，增益控制器和光衰减器控制器的光放大器。多个放大部件包括光放大介质和用于产生泵浦光的泵浦光源。光衰减器光学连接在放大部件之间。增益控制器分别控制泵浦源的泵浦光功率，使得该比率根据增益设定值增加而减小，并且比例介于第一阈值水平和第二阈值水平之间。光衰减器控制器控制光衰减器的衰减，以便根据输入到输入端口的信号光的状态将放大部分的增益的总和保持在增益设定值中。

10. 发明授权

US09093816B2 Transmission apparatus and transmission system 有权
标题翻译：传输装置和传输系统
公开(公告)号：US09093816B2
公开(公告)日：2015-07-28
申请号：US13168580
申请日：2011-06-24
申请人： Norifumi Shukunami , Tatsuya Tsuzuki
发明人： Norifumi Shukunami , Tatsuya Tsuzuki
IPC分类号： H04B10/04 , H04B10/17 , H04J14/06 , H01S3/067
CPC分类号： H01S3/06766 , H01S3/0677 , H01S3/102 , H01S2301/04 , H04B10/2572 , H04B10/294
摘要： An optical transmission apparatus includes an optical amplifier configured to amplify a wavelength-division multiplexed signal light using an amplifying medium doped with a rare earth ion, a first optical transmitter configured to output a wavelength of a dual-polarization-multiplexed signal to a short wavelength side of an amplification band of the optical amplifier, a second optical transmitter configured to output a wavelength of a non polarization-multiplexed signal to a long wavelength side of the amplification band of the optical amplifier, and an optical multiplexer configured to input a wavelength-division multiplexed signal to the optical amplifier, the wavelength-division multiplexed signal comprising the non polarization-multiplexed signal and the dual-polarization-multiplexed signal.
摘要翻译：一种光传输装置，包括：光放大器，被配置为使用掺杂有稀土离子的放大介质放大波分复用信号光;第一光发送器，被配置为将双偏振复用信号的波长输出到短波长光放大器的放大频带的一侧，配置成将非偏振复用信号的波长输出到光放大器的放大频带的长波长侧的第二光发送器，以及配置为输入波长 - 分复用信号到光放大器，波分复用信号包括非偏振复用信号和双偏振复用信号。

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