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。

公开(公告)号：US08068275B2

公开(公告)日：2011-11-29

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： H01S3/30 ,  H04B10/12

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。

公开(公告)号：US20080013162A1

公开(公告)日：2008-01-17

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： 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。

公开(公告)号：US06903324B2

公开(公告)日：2005-06-07

申请号：US10102690

申请日：2002-03-22

申请人： Hiroaki Tomofuji ,  Takuji Maeda ,  Norifumi Shukunami ,  Tatsuya Tsuzuki ,  Yuichi Suzuki

发明人： Hiroaki Tomofuji ,  Takuji Maeda ,  Norifumi Shukunami ,  Tatsuya Tsuzuki ,  Yuichi Suzuki

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。

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％。

公开(公告)号：US08785338B2

公开(公告)日：2014-07-22

申请号：US13545679

申请日：2012-07-10

申请人： Tatsuya Tsuzuki ,  Takahiro Mori ,  Naoko Yoshimura ,  Kota Yoshimura ,  Marin Yoshimura ,  Karen Yoshimura

发明人： Tatsuya Tsuzuki ,  Katsushi Yoshimura ,  Takahiro Mori

IPC分类号： C03C3/087

CPC分类号： C03C4/085 ,  C03C1/028 ,  C03C3/087 ,  C03C4/02 ,  C03C4/082

摘要： Disclosed is a glass with low solar transmittance, which is characterized by that it has a basic composition of soda-lime-silica glass, that it contains as coloring components 0.70-1.70 mass % of Fe2O3 (total iron in terms of ferric iron), 0.15-0.45 mass % of FeO (ferrous iron), 0-0.8 mass % of TiO2, 100-350 ppm of CoO, 0-60 ppm of Se, 100-700 ppm of Cr2O3, and 3-150 ppm of MnO, that it has a ratio (Fe2+/Fe3+) of ferrous iron to ferric iron of 0.20-0.80. This glass has superior ultraviolet absorbing performance and infrared absorbing performance (heat insulation performance) and an appropriate transparency.

摘要翻译： 公开了一种太阳能透光率低的玻璃，其特征在于，其具有碱石灰石英玻璃的碱性组成，其含有着色成分为0.70-1.70质量％的Fe 2 O 3（以铁为总铁）， FeO（亚铁）0.15-0.45质量％，TiO 2 0〜0.8质量％，CoO 100〜350ppm，Se：0〜60ppm，Cr 2 O 3：100〜700ppm，MnO：3-150ppm 它具有0.20-0.80的二价铁与三价铁的比例（Fe2 + / Fe3 +）。 该玻璃具有优异的紫外线吸收性能和红外吸收性能（隔热性能）和适当的透明度。