公开(公告)号：US08965201B2

公开(公告)日：2015-02-24

申请号：US13235685

申请日：2011-09-19

申请人： Naoki Kuwata ,  Koji Otsubo

发明人： Naoki Kuwata ,  Koji Otsubo

IPC分类号： H04B10/08 ,  H04B10/079 ,  H04B10/67

CPC分类号： H04B10/07955 ,  H04B10/673

摘要： An optical transmission device includes a first power monitor to monitor a first signal into which second signals with respectively different wavelengths are multiplexed so as to measure received power of the first signal; an amplifier to amplify the first signal, to generate a third signal; a driver to drive the amplifier; a demultiplexer to separate the third signal into fourth signals with the different respectively wavelengths; second power monitors each to monitor each of the fourth signals so as to measure received power of each of the fourth signals; a memory to store therein data related to gain in the amplifier, the data corresponding to each of wavelengths of the second signals, with respect to parameters which are the received power measured by the first power monitor and driving condition; and a processor to calculate power of each of the second signals.

摘要翻译： 光传输装置包括：第一功率监视器，用于监视第一信号，第一信号具有分别不同波长的第二信号被多路复用以测量第一信号的接收功率; 放大器，用于放大第一信号，以产生第三信号; 驱动放大器的驱动器; 解复用器，用于将第三信号分离成具有不同波长的第四信号; 每个第二功率监视每个第四信号以测量每个第四信号的接收功率; 存储器，用于存储与放大器中的增益相关的数据，对应于作为由第一功率监视器和驱动条件测量的接收功率的参数的对应于第二信号的每个波长的数据; 以及处理器，用于计算每个第二信号的功率。

公开(公告)号：US20120121259A1

公开(公告)日：2012-05-17

申请号：US13235685

申请日：2011-09-19

申请人： Naoki Kuwata ,  Koji Otsubo

发明人： Naoki Kuwata ,  Koji Otsubo

IPC分类号： H04B10/08

CPC分类号： H04B10/07955 ,  H04B10/673

摘要： An optical transmission device includes a first power monitor to monitor a first signal into which second signals with respectively different wavelengths are multiplexed so as to measure received power of the first signal; an amplifier to amplify the first signal, to generate a third signal; a driver to drive the amplifier; a demultiplexer to separate the third signal into fourth signals with the different respectively wavelengths; second power monitors each to monitor each of the fourth signals so as to measure received power of each of the fourth signals; a memory to store therein data related to gain in the amplifier, the data corresponding to each of wavelengths of the second signals, with respect to parameters which are the received power measured by the first power monitor and driving condition; and a processor to calculate power of each of the second signals.

摘要翻译： 光传输装置包括：第一功率监视器，用于监视第一信号，第一信号具有分别不同波长的第二信号被多路复用以测量第一信号的接收功率; 放大器，用于放大第一信号，以产生第三信号; 驱动放大器的驱动器; 解复用器，用于将第三信号分离成具有不同波长的第四信号; 每个第二功率监视每个第四信号以测量每个第四信号的接收功率; 存储器，用于存储与放大器中的增益相关的数据，对应于作为由第一功率监视器和驱动条件测量的接收功率的参数的对应于第二信号的每个波长的数据; 以及处理器，用于计算每个第二信号的功率。

公开(公告)号：US20060279835A1

公开(公告)日：2006-12-14

申请号：US11360662

申请日：2006-02-24

申请人： Koji Otsubo ,  Haruhiko Kuwatsuka

发明人： Koji Otsubo ,  Haruhiko Kuwatsuka

IPC分类号： H01S3/00 ,  H04B10/12

CPC分类号： G02F1/3534 ,  G02F2001/212 ,  G02F2002/006 ,  H04B10/299

摘要： A wavelength conversion system includes a Mach-Zehnder interferometer including two optical waveguides, a non-linear medium provided on one of the two optical waveguides, and a branching ratio adjuster for adjusting the branching ratio of multiplexed light produced by multiplexing signal light and pumping light so that the powers of the signal light and the pumping light which are to be emitted from the two optical waveguides are equal to each other. The multiplexed light whose branching ratio is adjusted by the branching ratio adjuster is introduced into the two optical waveguides such that the non-linear medium generates phase conjugation light of the signal light and the light guided through the one optical waveguide and the light guided through the other one of the two optical waveguides interfere with each other so that the phase conjugation light is extracted as wavelength conversion light.

公开(公告)号：US07595508B2

公开(公告)日：2009-09-29

申请号：US10857920

申请日：2004-06-02

申请人： Koji Otsubo ,  Yoshiaki Nakata

发明人： Koji Otsubo ,  Yoshiaki Nakata

IPC分类号： H01L33/00

CPC分类号： H01S5/341 ,  B82Y20/00 ,  H01L33/06 ,  H01S5/028 ,  H01S5/06226 ,  H01S5/2214 ,  H01S5/2231 ,  H01S5/3412 ,  H01S5/34313 ,  H01S5/34366

摘要： The optical semiconductor device comprises an active layer including a plurality of quantum dot stacks 18, 22, 26 each of which is formed of a plurality of quantum dot layers 14 and a plurality of first layers 16 alternately stacked, and a plurality of second barrier layers 20, 24 thicker than the first barrier layers 16 stacked alternately with the quantum dot stacks 18, 22, 26. Thus, the quantum dot layers can be stacked with the generation of dislocations due to lattice mismatching between the substrate and the quantum dots suppressed. A number of quantum dot layers can be stacked with a desired light confinement coefficient ensured. The optical semiconductor device can have the characteristics easily improved.

摘要翻译： 光学半导体器件包括有源层，其包括多个量子点堆叠18,22,26，每个量子点堆叠18,22,26由交替层叠的多个量子点层14和多个第一层16形成，并且多个第二阻挡层 20,24比与量子点堆叠18,22,26交替堆叠的第一阻挡层16厚。因此，量子点层可以由于衬底和量子点被抑制之间的晶格失配而产生位错而堆叠。 可以堆叠多个量子点层，确保所需的光限制系数。 光学半导体器件可以具有容易改善的特性。

公开(公告)号：US20050271103A1

公开(公告)日：2005-12-08

申请号：US11020214

申请日：2004-12-27

申请人： Koji Otsubo

发明人： Koji Otsubo

IPC分类号： H01S5/22 ,  H01S5/00 ,  H01S5/042 ,  H01S5/223 ,  H01S5/30 ,  H01S5/34 ,  H01S5/343

CPC分类号： B82Y20/00 ,  B82Y10/00 ,  H01S5/0425 ,  H01S5/0655 ,  H01S5/2213 ,  H01S5/2214 ,  H01S5/222 ,  H01S5/2222 ,  H01S5/2231 ,  H01S5/305 ,  H01S5/3054 ,  H01S5/3412 ,  H01S5/34313

摘要： The optical semiconductor device comprises a lower clad layer 12, optical waveguide layers 14, 16, 18 including an active layer for recombining the carriers. The upper clad layer 20 is mesa stripe configuration having a first mesa portion contacting the contact layer 22 and having a first width, and a second mesa portion having a second width larger than the first width. The first width, the second width and the thickness of the second mesa portion are set not to oscillate in the higher-order transverse mode.

摘要翻译： 光学半导体器件包括下包层12，包括用于重组载流子的有源层的光波导层14,16,18。 上覆盖层20是具有与接触层22接触并具有第一宽度的第一台面部分的台面条状构造，以及具有大于第一宽度的第二宽度的第二台面部分。 第二台面部分的第一宽度，第二宽度和厚度被设定为不以高阶横向模式振荡。

公开(公告)号：US08031394B2

公开(公告)日：2011-10-04

申请号：US12222696

申请日：2008-08-14

申请人： Koji Otsubo ,  Haruhiko Kuwatsuka

发明人： Koji Otsubo ,  Haruhiko Kuwatsuka

IPC分类号： G02F1/365 ,  G02F2/02 ,  H04B10/17 ,  H04B10/12

CPC分类号： G02F1/3534 ,  G02F2001/212 ,  G02F2002/006 ,  H04B10/299

摘要： A wavelength conversion system includes a Mach-Zehnder interferometer including two optical waveguides, a non-linear medium provided on one of the two optical waveguides, and a branching ratio adjuster for adjusting the branching ratio of multiplexed light produced by multiplexing signal light and pumping light so that the powers of the signal light and the pumping light which are to be emitted from the two optical waveguides are equal to each other. The multiplexed light whose branching ratio is adjusted by the branching ratio adjuster is introduced into the two optical waveguides such that the non-linear medium generates phase conjugation light of the signal light and the light guided through the one optical waveguide and the light guided through the other one of the two optical waveguides interfere with each other so that the phase conjugation light is extracted as wavelength conversion light.

摘要翻译： 一种波长转换系统包括：包括两个光波导的马赫 - 曾德干涉仪，设置在两个光波导中的一个上的非线性介质;以及分支比调节器，用于调节由多路复用信号光和泵浦光产生的复用光的分支比 使得要从两个光波导发射的信号光和泵浦光的功率彼此相等。 通过分支比调节器调整分支比的多路复用光被引入到两个光波导中，使得非线性介质产生信号光的相位共轭光和通过一个光波导引导的光和通过 两个光波导中的另一个彼此干涉，使得相位共轭光作为波长转换光被提取。

公开(公告)号：US20100052616A1

公开(公告)日：2010-03-04

申请号：US12615095

申请日：2009-11-09

申请人： Masahiro Takada ,  Yoshiyuki Nakamura ,  Koji Otsubo ,  Kazuo Tojima

发明人： Masahiro Takada ,  Yoshiyuki Nakamura ,  Koji Otsubo ,  Kazuo Tojima

IPC分类号： H02J7/00

CPC分类号： H01M10/4207 ,  H01M10/345 ,  H01M10/425 ,  H01M10/446

摘要： In a pre-replacement process, a replacement battery module is provided with a memory effect before being dispatched, by performing at least one of the process of performing a cyclic charge/discharge operation on the replacement battery module while limiting the width of SOC change to an intermediate range, and the process of setting an initial SOC and then letting the replacement battery module stand for a predetermined time in an environment of temperature above normal temperature. This pre-replacement process substantially eliminates the difference between the voltage characteristic of the replacement battery module yet to be used and the voltage characteristic of a battery module having a history of use, thereby achieving a uniform voltage characteristic of a battery pack as a whole.

摘要翻译： 在预更换处理中，通过对更换电池模块执行循环充电/放电操作的过程中的至少一个，同时将SOC变化的宽度限制为 中间范围，以及设定初始SOC的处理，然后在更高于常温的环境中放置更换电池模块预定时间。 这种预置换过程基本上消除了待使用的替换电池模块的电压特性与具有使用历史的电池模块的电压特性之间的差异，从而实现了电池组整体的均匀的电压特性。

公开(公告)号：US20090080064A1

公开(公告)日：2009-03-26

申请号：US12222696

申请日：2008-08-14

申请人： Koji Otsubo ,  Haruhiko Kuwatsuka

发明人： Koji Otsubo ,  Haruhiko Kuwatsuka

IPC分类号： G02F1/225 ,  G02F1/365

CPC分类号： G02F1/3534 ,  G02F2001/212 ,  G02F2002/006 ,  H04B10/299

摘要： A wavelength conversion system includes a Mach-Zehnder interferometer including two optical waveguides, a non-linear medium provided on one of the two optical waveguides, and a branching ratio adjuster for adjusting the branching ratio of multiplexed light produced by multiplexing signal light and pumping light so that the powers of the signal light and the pumping light which are to be emitted from the two optical waveguides are equal to each other. The multiplexed light whose branching ratio is adjusted by the branching ratio adjuster is introduced into the two optical waveguides such that the non-linear medium generates phase conjugation light of the signal light and the light guided through the one optical waveguide and the light guided through the other one of the two optical waveguides interfere with each other so that the phase conjugation light is extracted as wavelength conversion light.

摘要翻译： 一种波长转换系统包括：包括两个光波导的马赫 - 曾德干涉仪，设置在两个光波导中的一个上的非线性介质;以及分支比调节器，用于调节由多路复用信号光和泵浦光产生的复用光的分支比 使得要从两个光波导发射的信号光和泵浦光的功率彼此相等。 通过分支比调节器调整分支比的多路复用光被引入到两个光波导中，使得非线性介质产生信号光的相位共轭光和通过一个光波导引导的光和通过 两个光波导中的另一个彼此干涉，使得相位共轭光作为波长转换光被提取。

公开(公告)号：US20060222028A1

公开(公告)日：2006-10-05

申请号：US11341588

申请日：2006-01-30

申请人： Nobuaki Hatori ,  Tsuyoshi Yamamoto ,  Koji Otsubo ,  Yasuhiko Arakawa

发明人： Nobuaki Hatori ,  Tsuyoshi Yamamoto ,  Koji Otsubo ,  Yasuhiko Arakawa

IPC分类号： H01S5/00

CPC分类号： H01S5/341 ,  B82Y10/00 ,  B82Y20/00 ,  H01S5/0206 ,  H01S5/0422 ,  H01S5/06226 ,  H01S5/22 ,  H01S5/3054 ,  H01S5/3086 ,  H01S5/309 ,  H01S5/3412 ,  H01S5/34306

摘要： An intrinsic GaAs waveguide layer is formed on a p-type AlGaAs cladding layer, a quantum dot active layer is formed further thereon. An n-type AlGaAs cladding layer is formed on the center portion of the quantum dot active layer. Thus-configured semiconductor laser is allowed to successfully suppress the area of the p-n junction plane to a small level, and to obtain a high level of reliability, because there is no need of processing the center portion of the quantum dot active layer, contributive to laser oscillation.

公开(公告)号：US07099363B2

公开(公告)日：2006-08-29

申请号：US10309270

申请日：2002-12-04

申请人： Koji Otsubo

发明人： Koji Otsubo

IPC分类号： H01S5/00

CPC分类号： H01S5/18311 ,  B82Y20/00 ,  H01S5/18341 ,  H01S5/18369 ,  H01S5/34306

摘要： A surface-emitting laser has a lower multilayer film reflecting mirror, an active layer, a current confinement layer, a clad layer, an upper multilayer film reflecting mirror, and an upper electrode formed in the order described on the upper surface of a substrate having a lower electrode formed on the lower surface thereof. The current confinement layer includes a conductive part and an insulating part surrounding the conductive part with the conductive part being defined by a sidewall surface that widens along a direction toward the active layer.