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21. 发明授权

US07613370B2 Optical switch and method of adjusting optical switch 有权
标题翻译：光开关及调光方式
公开(公告)号：US07613370B2
公开(公告)日：2009-11-03
申请号：US12074060
申请日：2008-02-29
申请人： Kohei Shibata , Hirofumi Aota , Tamotsu Akashi , Toshiya Kishida , Hiroyuki Furukawa
发明人： Kohei Shibata , Hirofumi Aota , Tamotsu Akashi , Toshiya Kishida , Hiroyuki Furukawa
IPC分类号： G02B6/35
CPC分类号： G02B6/352 , G02B6/3556 , G02B6/356
摘要： An optical switch includes an input port into which a multiplexed optical signal is input; a dispersing unit that, according to wavelength, disperses the multiplexed optical signal into a plurality of optical signals that are each dispersed in a unique direction; a converging unit that converges the dispersed optical signals; plural mirrors that are arrayed forming a single row in a plane and reflecting the converged optical signals, respectively; and plural output ports through which the reflected optical signals are output. Each of the mirrors has a concave reflective surface that is in the plane and of a predetermined curvature about an axis parallel to the plane.
摘要翻译：光开关包括输入端口，输入多路复用光信号; 根据波长的分散单元将复用的光信号分散成分散在唯一方向上的多个光信号; 收敛分散的光信号的会聚单元; 多个反射镜分别在平面中形成单行并反射会聚的光信号; 以及输出反射光信号的多个输出端口。每个反射镜具有凹形反射表面，该凹面反射表面在平行于平面且围绕平行于该平面的轴线具有预定曲率。

22. 发明授权

US08285088B2 Wavelength selective switch 有权
标题翻译：波长选择开关
公开(公告)号：US08285088B2
公开(公告)日：2012-10-09
申请号：US12068351
申请日：2008-02-05
申请人： Hirofumi Aota , Kohei Shibata , Tsuyoshi Yamamoto
发明人： Hirofumi Aota , Kohei Shibata , Tsuyoshi Yamamoto
IPC分类号： G02B6/12 , G02B6/34 , G02B7/02
CPC分类号： G02B6/29311 , G02B6/29313 , G02B6/3512 , G02B6/3548 , G02B6/356 , G02B6/3586 , H04J14/0201
摘要： A wavelength selective switch for suppressing degradation of pass band characteristics when the temperature rises. The wavelength selective switch includes a spectroscopic element for separating input light and providing angular dispersion depending on wavelengths, a collective lens for gathering light output from the spectroscopic element, and a movable reflection block which includes a plurality of mirrors arranged in the direction of angular dispersion made by the spectroscopic element, changes the angles of the mirrors in a direction differing from the direction of angular dispersion, and reflects the light coming from the collective lens. The collective lens is fixed at one end with respect to the direction of angular dispersion, expands with heat in a direction in which it is not fixed when the temperature rises, and outputs the light in a direction opposite to the direction in which the angle of light output from the spectroscopic element changes.
摘要翻译：一种用于当温度升高时抑制通带特性劣化的波长选择开关。波长选择开关包括用于分离输入光并提供取决于波长的角度色散的分光元件，用于聚集从分光元件输出的光的集体透镜，以及可移动反射块，其包括沿角度分散方向布置的多个反射镜由分光元件制成的反射镜的角度沿与角度分散方向不同的方向改变，并且反射来自聚光透镜的光。集体透镜相对于角度分散的方向固定在一端，当温度升高时，其在不固定的方向上以热量方式膨胀，并且沿与该角度的方向相反的方向输出光分光元件的光输出变化。

23. 发明申请

US20080239444A1 Wavelength selective switch 有权
标题翻译：波长选择开关
公开(公告)号：US20080239444A1
公开(公告)日：2008-10-02
申请号：US12068351
申请日：2008-02-05
申请人： Hirofumi Aota , Kohei Shibata , Tsuyoshi Yamamoto
发明人： Hirofumi Aota , Kohei Shibata , Tsuyoshi Yamamoto
IPC分类号： G02B26/08
CPC分类号： G02B6/29311 , G02B6/29313 , G02B6/3512 , G02B6/3548 , G02B6/356 , G02B6/3586 , H04J14/0201
摘要： A wavelength selective switch for suppressing degradation of pass band characteristics when the temperature rises. The wavelength selective switch includes a spectroscopic element for separating input light and providing angular dispersion depending on wavelengths, a collective lens for gathering light output from the spectroscopic element, and a movable reflection block which includes a plurality of mirrors arranged in the direction of angular dispersion made by the spectroscopic element, changes the angles of the mirrors in a direction differing from the direction of angular dispersion, and reflects the light coming from the collective lens. The collective lens is fixed at one end with respect to the direction of angular dispersion, expands with heat in a direction in which it is not fixed when the temperature rises, and outputs the light in a direction opposite to the direction in which the angle of light output from the spectroscopic element changes.
摘要翻译：一种用于当温度升高时抑制通带特性劣化的波长选择开关。波长选择开关包括用于分离输入光并提供取决于波长的角度色散的分光元件，用于聚集从分光元件输出的光的集体透镜，以及可移动反射块，其包括沿角度分散方向布置的多个反射镜由分光元件制成的反射镜的角度沿与角度分散方向不同的方向改变，并且反射来自聚光透镜的光。集体透镜相对于角度分散的方向固定在一端，当温度升高时，其在不固定的方向上以热量方式膨胀，并且沿与该角度的方向相反的方向输出光来自分光元件的光输出变化。

24. 发明授权

US08477409B2 PLC-type delay demodulation circuit and PLC-type optical interferometer 失效
标题翻译： PLC型延时解调电路和PLC型光干涉仪
公开(公告)号：US08477409B2
公开(公告)日：2013-07-02
申请号：US13614692
申请日：2012-09-13
申请人： Hiroshi Kawashima , Kazutaka Nara , Kohei Shibata
发明人： Hiroshi Kawashima , Kazutaka Nara , Kohei Shibata
IPC分类号： G02F2/00 , G02F1/035
CPC分类号： G02B6/2861 , G02B6/29355 , G02F1/225 , G02F2001/212 , H04B10/677
摘要： Disclosed are a PLC-type delay demodulation circuit and a PLC-type optical interferometer capable of reducing the size of a PLC chip with respect to the arrangement of various kinds of light output waveguides. In a PLC-type delay demodulation circuit, arm waveguides of a first MZI and arm waveguides of a second MZI are formed so as to overlap each other in the same region of a planar lightwave circuit. The optical paths of the MZIs are arranged such that the propagation directions of two DQPSK signals branched by a Y-branch waveguide are opposite to each other.
摘要翻译：公开了能够相对于各种光输出波导的布置来减小PLC芯片的尺寸的PLC型延迟解调电路和PLC型光干涉仪。在PLC型延迟解调电路中，第一MZI的臂波导和第二MZI的臂波导形成为在平面光波电路的相同区域中彼此重叠。 MZI的光路被布置成使得由Y分支波导分支的两个DQPSK信号的传播方向彼此相反。

25. 发明授权

US08125942B2 MIMO wireless communication 失效
标题翻译： MIMO无线通信
公开(公告)号：US08125942B2
公开(公告)日：2012-02-28
申请号：US11871962
申请日：2007-10-12
申请人： Hideto Horikoshi , Kohei Shibata , Kozo Matsunaga
发明人： Hideto Horikoshi , Kohei Shibata , Kozo Matsunaga
IPC分类号： H04W4/00
CPC分类号： H04B7/0817
摘要： There are provided methods and arrangements for communication in which, even in a case where an antenna that is not correctly connected is present in a wireless module provided with a plurality of antennas, high-performance data communication can be performed without using such antennas. RSSI values are detected from a plurality of receiving circuits of a wireless module, respectively, and a computer judges whether or not there is a significant difference between a first RSSI value detected from one receiving circuit and a second RSSI value detected from another receiving circuit. In a case where it is judged that there is the significant difference, the computer recognizes that the receiving circuit from which a larger RSSI value has been detected is connected to an antenna and the receiving circuit from which a smaller RSSI value has been detected is not connected to the antenna, and the receiving circuit recognized to be unconnected to the antenna is set to operation stop.
摘要翻译：提供了用于通信的方法和布置，其中即使在设置有多个天线的无线模块中存在未正确连接的天线的情况下，也可以不使用这样的天线来执行高性能数据通信。分别从无线模块的多个接收电路检测RSSI值，并且计算机判断从一个接收电路检测到的第一RSSI值与从另一个接收电路检测到的第二RSSI值之间是否存在显着差异。在判断出存在显着差异的情况下，计算机识别到已经检测到更大的RSSI值的接收电路被连接到天线，并且已经从其检测到较小的RSSI值的接收电路不是连接到天线，并且识别为与天线未连接的接收电路被设置为操作停止。

26. 发明授权

US07386206B2 Optical device with slab waveguide and channel waveguides on substrate 有权
公开(公告)号：US07386206B2
公开(公告)日：2008-06-10
申请号：US10655036
申请日：2003-09-05
申请人： Haruhiko Tabuchi , Terukazu Naruse , Koji Terada , Kohei Shibata
发明人： Haruhiko Tabuchi , Terukazu Naruse , Koji Terada , Kohei Shibata
IPC分类号： G02B6/34
CPC分类号： G02B6/12011 , G02B6/12019 , G02B6/29383
摘要： An optical device used, for example, in an add/drop multiplexer, a dynamic gain equalizer or a optical power monitor. The optical device includes (a) a substrate; (b) a first slab waveguide formed on the substrate; (c) channel waveguides of differing lengths formed on the substrate, light output from the first slab waveguide being input to the channel waveguides; and (d) a second slab waveguide formed on the substrate, light output from the channel waveguides being input to the second slab waveguide. An end face of the second slab waveguide shares a face with an end face of the substrate. The optical device has low loss characteristics.

27. 发明申请

US20070236797A1 Wavelength dispersion compensation device 审中-公开
标题翻译：波长色散补偿装置
公开(公告)号：US20070236797A1
公开(公告)日：2007-10-11
申请号：US11506941
申请日：2006-08-21
申请人： Kohei Shibata , Nobuhiro Fukushima
发明人： Kohei Shibata , Nobuhiro Fukushima
IPC分类号： G02B1/10
CPC分类号： G02B6/29358 , G02B6/29394 , G02B6/29395
摘要： A wavelength dispersion compensation device includes an etalon 100 having a slab shape. Reflective films are formed on each side of the etalon 100. The reflective films respectively have predetermined reflectance. Reflectance of one of the reflective films differs according to a light incident angle by using a portion of light within a wavelength range to be used with which a filter characteristic in which transmittance rapidly changes is obtained.
摘要翻译：波长色散补偿装置包括具有板状的标准具100。在标准具100的每一侧上形成反射膜。反射膜分别具有预定的反射率。通过使用透射率快速变化的滤光器特性所使用的波长范围内的光的一部分，可以根据光入射角反射一个反射膜的反射率。

28. 发明授权

US07231111B2 Tunable dispersion compensator 失效
标题翻译：可调谐色散补偿器
公开(公告)号：US07231111B2
公开(公告)日：2007-06-12
申请号：US10899003
申请日：2004-07-27
申请人： Kohei Shibata
发明人： Kohei Shibata
IPC分类号： G02B6/26
CPC分类号： G02B6/29395 , G02B6/2931 , G02B6/29311 , G02B6/29358 , G02B6/29394 , G02B27/0068 , G02B27/1086 , G02B27/143 , G02B27/145 , G02B27/42 , G02B27/4277
摘要： A tunable dispersion compensator includes a collimating unit that collimates an incident light to output a parallel light, a parallel shifting unit that spatially shifts the parallel light from the collimating unit within a predetermined range, and an optical-path-length providing unit that provides optical path length of light corresponding to a position at which light output from the parallel shifting unit is input.
摘要翻译：可调谐色散补偿器包括准直入射光以输出平行光的准直单元，将来自准直单元的平行光空间偏移到预定范围内的平行移动单元，以及光路长度提供单元，其提供光学对应于从平行移动单元输出的光的位置的光的路径长度被输入。

29. 发明授权

US06393069B1 Circuit and method for compensating for degradation in pulse width of burst data 失效
标题翻译：用于补偿突发数据的脉冲宽度劣化的电路和方法
公开(公告)号：US06393069B1
公开(公告)日：2002-05-21
申请号：US09098229
申请日：1998-06-16
申请人： Kohei Shibata
发明人： Kohei Shibata
IPC分类号： H03D100
CPC分类号： H03K5/156 , H03K5/04 , H04L25/062
摘要： The output from a digital signal amplitude regenerator circuit in which the amplitude of a transmitted burst data signal is amplified, and an initial potential generator circuit, are connected to a switch. While there are no burst data, the initial potential generator circuit provides a circuit for compensating for degradation in pulse width comprising a low-pass filter, a pulse width compensation threshold generator circuit, and a limiting amplifier, with an initial potential needed to set a threshold. When a carrier detection signal generator circuit detects the arrival of a burst data signal, a carrier detection signal is outputted, and the switch is switched over from the initial potential to the burst data signal. Thus, the circuit for compensating for the degradation in pulse width located at a later stage can detect a threshold from an optimal initial potential, and thereby the degradation in pulse width can be optimally compensated.
摘要翻译：来自数字信号振幅再生器电路的输出，其中发送的突发数据信号的幅度被放大，以及初始电位发生器电路连接到开关。虽然没有突发数据，但是初始电位发生器电路提供了用于补偿包括低通滤波器，脉冲宽度补偿阈值发生器电路和限幅放大器在内的脉冲宽度劣化的电路，具有设定阈。当载波检测信号发生器电路检测到突发数据信号的到达时，输出载波检测信号，并将开关从初始电位切换到突发数据信号。因此，用于补偿位于稍后阶段的脉冲宽度的劣化的电路可以从最佳初始电位检测阈值，从而可以最佳地补偿脉冲宽度的劣化。

30. 发明授权

US06252458B1 Differential amplifier 有权
标题翻译：差分放大器
公开(公告)号：US06252458B1
公开(公告)日：2001-06-26
申请号：US09428755
申请日：1999-10-28
申请人： Kohei Shibata
发明人： Kohei Shibata
IPC分类号： H03F345
CPC分类号： H03F3/45704 , H03F3/45183 , H03F3/45188 , H03F3/45197 , H03F2203/45508 , H03F2203/45612 , H03F2203/45702
摘要： A differential amplifier having an integrated resistance load type differential pair in which a constant current which varies to suppress a small signal gain variation of a resistance load type differential pair caused by variations of circumferential conditions and manufacturing process conditions and a constant current which varies to suppress a limiter amplitude variation of the resistance load type differential pair caused by the variations of the same conditions are mixed at a fixed ratio under a condition which is most frequently used among the circumferential conditions and a condition which is best achieved among the manufacturing process conditions, which is used as a bias current of the differential pair.
摘要翻译：具有积分电阻负载型差分对的差分放大器，其中恒定电流变化以抑制由周向条件和制造工艺条件的变化引起的电阻负载型差分对的小信号增益变化，并且恒定电流变化以抑制在相同条件的变化引起的电阻负载型差动对的限幅器振幅变化在周向条件下最常使用的条件和在制造工艺条件中最佳实现的条件之间以固定比率混合，其用作差分对的偏置电流。

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