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1.发明授权公开(公告)号：US09065570B2
公开(公告)日：2015-06-23
申请号：US13291783
申请日：2011-11-08
申请人： Norifumi Shukunami , Tatsuya Tsuzuki , Hiroki Ooi
发明人： Norifumi Shukunami , Tatsuya Tsuzuki , Hiroki Ooi
IPC分类号： H04B10/17 , H04B10/294 , H04B10/12
CPC分类号： H04B10/2941 , H04B10/2942
摘要： In an optical amplification apparatus an optical amplifier amplifies an optical signal at set gain. An equalizer changes loss of the amplified optical signal according to wavelengths. A processor controls the equalizer so as to make the equalizer have a loss-wavelength characteristic corresponding to a gain tilt of the optical amplifier which occurs according to the set gain.
摘要翻译： 在光放大装置中，光放大器以设定的增益放大光信号。 均衡器根据波长改变放大的光信号的损耗。 处理器控制均衡器，以使均衡器具有与根据设定增益发生的光放大器的增益倾斜相对应的损耗波长特性。
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2.发明授权公开(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
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。
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公开(公告)号：US20120188631A1
公开(公告)日：2012-07-26
申请号：US13291783
申请日：2011-11-08
申请人： Norifumi SHUKUNAMI , Tatsuya TSUZUKI , Hiroki OOI
发明人： Norifumi SHUKUNAMI , Tatsuya TSUZUKI , Hiroki OOI
IPC分类号： H04B10/18
CPC分类号： H04B10/2941 , H04B10/2942
摘要： In an optical amplification apparatus an optical amplifier amplifies an optical signal at set gain. An equalizer changes loss of the amplified optical signal according to wavelengths. A processor controls the equalizer so as to make the equalizer have a loss-wavelength characteristic corresponding to a gain tilt of the optical amplifier which occurs according to the set gain.
摘要翻译： 在光放大装置中，光放大器以设定的增益放大光信号。 均衡器根据波长改变放大的光信号的损耗。 处理器控制均衡器，以使均衡器具有与根据设定增益发生的光放大器的增益倾斜相对应的损耗波长特性。
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公开(公告)号：US20110317255A1
公开(公告)日：2011-12-29
申请号：US13168580
申请日：2011-06-24
IPC分类号： H01S3/00
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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公开(公告)号：US08068275B2
公开(公告)日：2011-11-29
申请号：US12656686
申请日：2010-02-12
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。
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公开(公告)号：US20100273635A1
公开(公告)日：2010-10-28
申请号：US12810130
申请日：2008-12-22
申请人： Tatsuya Tsuzuki , Naoki Mitamura
发明人： Tatsuya Tsuzuki , Naoki Mitamura
IPC分类号： C03C3/087
CPC分类号： C03C3/087
摘要： Disclosed is a glass composition including 60 to 70% by mass of SiO2, 0.5 to 3.0% by mass of Al2O3, 2 to 8% by mass of Na2O, 5 to 15% by mass of K2O, 8 to 13% by mass of MgO, 0 to 5% by mass of CaO, 0 to 8% by mass of SrO and 0.5 to 5% by mass of ZrO2, and substantially excluding BaO and B2O3, wherein a total amount of Na2O and K2O is 8 to 18% by mass, and a total amount of MgO, CaO and SrO is 10 to 22% by mass.
摘要翻译： 公开了包含60〜70质量％的SiO 2，0.5〜3.0质量％的Al 2 O 3，2〜8质量％的Na 2 O，5〜15质量％的K 2 O，8〜13质量％的MgO ，0〜5质量％的CaO，0〜8质量％的SrO和0.5〜5质量％的ZrO 2，并且实质上不包括BaO和B 2 O 3，其中Na 2 O和K 2 O的总量为8〜18质量％ ，MgO，CaO，SrO的总量为10〜22质量％。
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7.发明申请Method for measuring nonlinear optical properties, and optical amplifier and optical transmission system using same 失效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：US20080013162A1
公开(公告)日：2008-01-17
申请号：US11822841
申请日：2007-07-10
IPC分类号： H01S3/00
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，并且光的功率与从输出端口的一端输入到输出端口的相反方向 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，能够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。
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8.发明授权公开(公告)号：US06903324B2
公开(公告)日：2005-06-07
申请号：US10102690
申请日：2002-03-22
IPC分类号： H01S3/10 , H01S3/131 , H04B10/077 , H04B10/079 , H04B10/2507 , H04B10/29 , H04B10/296 , H04J14/00 , H04J14/02 , H01A3/00
CPC分类号： H04B10/2942
摘要： Wavelength multiplexed light is amplified by first and second EDFs. Gains of the first and the second EDFs are respectively held to be predetermined values by first and second AGC circuits. Between the first and the second EDFs, a variable attenuator is arranged. A loss in the variable attenuator is controlled by an ALC circuit so that output power is held to be a predetermined value instructed by a supervisory control signal. Respective time constants of the first and the second AGC circuits are sufficiently short in comparison with the response times of the first and the second EDFs. The time constant of the ALC circuit is sufficiently long in comparison with the time period required to transmit the supervisory control signal to each optical node.
摘要翻译： 波长复用光被第一和第二EDF放大。 通过第一和第二AGC电路将第一EDF和第二EDF的增益分别保持为预定值。 在第一和第二EDF之间设置可变衰减器。 可变衰减器的损耗由ALC电路控制，使得输出功率被保持为由监控信号指示的预定值。 与第一和第二EDF的响应时间相比，第一和第二AGC电路的相应时间常数足够短。 与向每个光节点发送监控信号所需的时间相比，ALC电路的时间常数足够长。
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9.发明申请公开(公告)号：US20110236023A1
公开(公告)日：2011-09-29
申请号：US13028619
申请日：2011-02-16
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。
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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
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。
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