公开(公告)号：US20090317078A1

公开(公告)日：2009-12-24

申请号：US12487816

申请日：2009-06-19

Applicant: Tetsuya UDA ,  Hiroyuki NAKANO ,  Yasuyuki FUKASHIRO

Inventor： Tetsuya UDA ,  Hiroyuki NAKANO ,  Yasuyuki FUKASHIRO

IPC: H04B10/08 ,  H04J14/06

CPC classification number: H04B10/0775 ,  H04B10/25133 ,  H04B10/67 ,  H04B2210/252 ,  H04J14/0213 ,  H04J14/0221 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0286 ,  H04J14/06

Abstract: The signal quality of ultra high-speed signals such as 40 Gbit/s and 100 Gbit/s are significantly degraded due to wavelength dispersion and nonlinear effects in an optical fiber. Thus, there is provided a transponder unit in which a light source is polarization multiplexed in a direction mutually orthogonal to a signal direction, in order to reduce the nonlinear effects in the optical fiber and improve the signal quality. At the same time, it is possible to monitor an amount of the wavelength dispersion in the optical fiber, allowing for more precise dispersion compensation design.

Abstract translation: 由于光纤中的波长色散和非线性效应，40Gbit / s和100Gbit / s等超高速信号的信号质量显着降低。 因此，提供了一种应答器单元，其中光源在与信号方向相互正交的方向上被偏振复用，以便减少光纤中的非线性效应并提高信号质量。 同时，可以监视光纤中的波长色散的量，从而允许更精确的色散补偿设计。

公开(公告)号：US07536110B2

公开(公告)日：2009-05-19

申请号：US11746899

申请日：2007-05-10

Applicant: Tetsuya Uda ,  Hiroshi Masuda ,  Hirofumi Nakano ,  Eita Miyasaka ,  Satoshi Asamizu

Inventor： Tetsuya Uda ,  Hiroshi Masuda ,  Hirofumi Nakano ,  Eita Miyasaka ,  Satoshi Asamizu

IPC: H04B10/02 ,  H04J14/02

CPC classification number: H04B10/2935 ,  H04B10/0777 ,  H04B10/2537 ,  H04B10/294 ,  H04J14/02 ,  H04J14/0221

Abstract: In the WDM systems, the OSNR and the signal loss among the optical signals are substantially minimized at the receiving terminal to combat the SRS effects. An equal amount of the signal loss is expected for every span in the transmission path so that the optical amplifier gain tilt is not affected among a number of wavelength frequencies in the optical signal. This is accomplished by controlling the amplification process according to a feedback from the monitoring units for monitoring the optical signal.

公开(公告)号：US20080253763A1

公开(公告)日：2008-10-16

申请号：US12027383

申请日：2008-02-07

Applicant: Tetsuya Uda ,  Hiroshi Takeuchi

Inventor： Tetsuya Uda ,  Hiroshi Takeuchi

IPC: H04B10/08

CPC classification number: H04B10/0777 ,  H04B10/2931 ,  H04B2210/078

Abstract: An optical transmission apparatus is arranged by: means for demultiplexing monitoring light for received wavelength-multiplexed signal light so as to detect optical intensity of the monitoring light; means for detecting optical intensity of wavelength-multiplexed signal light after the monitoring light has been demultiplexed therefrom; a gain controlling type optical amplifier for amplifying the wavelength-multiplexed signal light; an optical attenuating unit for adjusting optical intensity of the amplified wavelength-multiplexed signal light; and a monitoring control unit for controlling the gain controlling type optical amplifier in such a manner that the gain of the optical amplifier becomes constant, and for controlling an attenuating amount of the optical attenuating unit in such a manner that the optical intensity of the wavelength-multiplexed signal light becomes a predetermined target value.

Abstract translation: 光传输装置通过以下方式布置：用于对接收到的波长多路复用信号光进行多路化监视光的装置，以便检测监视光的光强度; 用于检测在监测光已被解复用之后波分复用信号光的光强度的装置; 用于放大波分复用信号光的增益控制型光放大器; 用于调节放大的波长复用信号光的光强度的光衰减单元; 以及监视控制单元，用于以使得光放大器的增益变得恒定的方式控制增益控制型光放大器，并且用于以这样的方式控制光衰减单元的衰减量： 复用信号光变为预定目标值。

公开(公告)号：US07415177B2

公开(公告)日：2008-08-19

申请号：US11798645

申请日：2007-05-15

Applicant: Yasuyuki Fukashiro ,  Hiroyuki Nakano ,  Tetsuya Uda ,  Tooru Hirai

Inventor： Yasuyuki Fukashiro ,  Hiroyuki Nakano ,  Tetsuya Uda ,  Tooru Hirai

IPC: G02B6/34

CPC classification number: H04B10/2525

Abstract: A dispersion compensating fiber whose chromatic dispersion is positive and a negative dispersion compensating fiber whose chromatic dispersion is negative are prepared, and division-multiplexed optical signals, after being guided to either dispersion compensating fiber to once shift the whole wavelength band to positivity or negativity, are subjected to fine adjustment with a dispersion compensating fiber of a reverse sign.

Abstract translation: 准备色散为正的色散补偿光纤和色散为负的负色散补偿光纤，并且在被分配复用光信号被引导到任一色散补偿光纤之后，将整个波长带一次移动到积极性或消极性， 用相反符号的色散补偿光纤进行微调。

公开(公告)号：US07250232B2

公开(公告)日：2007-07-31

申请号：US11150335

申请日：2005-06-10

Applicant: Dane Boysen ,  Calum Chisholm ,  Sossina M. Haile ,  Tetsuya Uda

Inventor： Dane Boysen ,  Calum Chisholm ,  Sossina M. Haile ,  Tetsuya Uda

IPC: H01M8/10 ,  H01M4/86 ,  H01M4/88 ,  H01M2/08 ,  B05D5/12

CPC classification number: B82Y30/00 ,  H01M4/8605 ,  H01M4/881 ,  H01M4/8828 ,  H01M4/8846 ,  H01M4/8885 ,  H01M4/923 ,  H01M4/925 ,  H01M4/926 ,  H01M8/0289 ,  H01M8/08 ,  H01M2300/0082 ,  Y02P70/56

Abstract: Processes, techniques, and compositions used to fabricate high performance solid acid fuel cell membrane electrode assemblies are disclosed. The techniques include preparing the solid acid electrolyte material, depositing the electrolyte membrane, depositing the electrocatalyst layer, preparing the electrodes, fabricating the gas seals, and constructing the membrane electrode assembly.

Abstract translation: 公开了用于制造高性能固体酸性燃料电池膜电极组件的方法，技术和组合物。 该技术包括制备固体酸性电解质材料，沉积电解质膜，沉积电催化剂层，制备电极，制造气体密封件和构建膜电极组件。

公开(公告)号：US20060082869A1

公开(公告)日：2006-04-20

申请号：US11295497

申请日：2005-12-07

Applicant: Tetsuya Uda ,  Ryoichi Miyake ,  Takeshi Nakada ,  Yoshimasa Kusano ,  Elichirou Takizawa

Inventor： Tetsuya Uda ,  Ryoichi Miyake ,  Takeshi Nakada ,  Yoshimasa Kusano ,  Elichirou Takizawa

IPC: H01S3/00

CPC classification number: H04B10/2563 ,  H04J14/02

Abstract: There is suppressed deterioration of transmission quality resulting from FWM light generated in the optical fiber of an optical transmission apparatus that performs wavelength division multiplex transmission. To suppress deterioration of the transmission quality due to the FWM light the sender apparatus adjusts the intensity of wavelength-division-multiplexed light output to the optical fiber according to a level of FWM crosstalk observed by receiver apparatus.

Abstract translation: 由于在执行波分复用传输的光传输装置的光纤中产生的FWM光，导致传输质量的恶化。 为了抑制由于FWM灯导致的传输质量的劣化，发送器装置根据接收机装置观测到的FWM串扰的电平来调整输出到光纤的波分复用光的强度。

公开(公告)号：US20050271915A1

公开(公告)日：2005-12-08

申请号：US11095464

申请日：2005-03-30

Applicant: Sossina Haile ,  Tetsuya Uda

Inventor： Sossina Haile ,  Tetsuya Uda

IPC: H01M8/06 ,  H01M8/10

CPC classification number: H01M8/0625 ,  H01M8/0637 ,  H01M8/1011 ,  H01M8/1013 ,  H01M8/1016 ,  H01M2300/0068 ,  Y02E60/522 ,  Y02E60/523 ,  Y02E60/566

Abstract: Direct alcohol fuel cells using solid acid electrolytes and internal reforming catalysts are disclosed. The fuel cell generally comprises an anode, a cathode, a solid acid electrolyte and an internal reforming catalyst. The internal reforming catalyst may comprise any suitable reformer and is positioned adjacent the anode. In this configuration the heat generated by the exothermic fuel cell catalyst reactions and ohmic heating of the fuel cell electrolyte drives the endothermic fuel reforming reaction, reforming the alcohol fuel into hydrogen. Any alcohol fuel may be used, e.g. methanol or ethanol. The fuel cells according to this invention show increased power density and cell voltage relative to direct alcohol fuel cells not using an internal reformer.

Abstract translation: 公开了使用固体酸电解质和内部重整催化剂的直链醇燃料电池。 燃料电池通常包括阳极，阴极，固体酸性电解质和内部重整催化剂。 内部重整催化剂可以包括任何合适的重整器并且邻近阳极定位。 在这种配置中，由放热燃料电池催化剂反应产生的热和燃料电池电解质的欧姆加热驱动吸热燃料重整反应，将醇燃料重整成氢。 可以使用任何酒精燃料，例如 甲醇或乙醇。 根据本发明的燃料电池相对于不使用内部重整器的直接醇燃料电池显示增加的功率密度和电池电压。