公开(公告)号：US4946243A

公开(公告)日：1990-08-07

申请号：US387511

申请日：1989-07-28

申请人： Masatoshi Suzuki ,  Shigeyuki Akiba ,  Hideaki Tanaka ,  Katsuyuki Utaka

发明人： Masatoshi Suzuki ,  Shigeyuki Akiba ,  Hideaki Tanaka ,  Katsuyuki Utaka

IPC分类号： G02B6/12 ,  G02F1/015 ,  G02F1/025 ,  H01L31/14 ,  H03C1/34

CPC分类号： G02F1/025 ,  G02F2001/0157

摘要： An optical modulation element is disclosed which has, on a substrate directly or through a lower clad layer, an optical waveguide layer of a low impurity concentration, an upper clad layer of a refractive index smaller than that of the optical waveguide layer, and electrodes, and in which light of a constant intensity incident on a light incident end face of the optical waveguide layer is intensity-modulated by changing the absorption coefficient of the optical waveguide layer by means of an electric field applied thereto across the electrodes so that the thus modulated light is emitted from a light emitting end face of the optical waveguide layer. In accordance with the present invention, a plurality of low impurity concentration regions and a plurality of high impurity concentration regions are disposed alternately with each other in contact with at least one of the lower and upper clad layers in the direction of travel of light in such a manner that the distribution density of the plurality of high impurity concentration regions increases in the direction of travel of light.

公开(公告)号：US4811352A

公开(公告)日：1989-03-07

申请号：US147229

申请日：1988-01-22

申请人： Masatoshi Suzuki ,  Shigeyuki Akiba ,  Hideaki Tanaka ,  Yukitoshi Kushiro

发明人： Masatoshi Suzuki ,  Shigeyuki Akiba ,  Hideaki Tanaka ,  Yukitoshi Kushiro

IPC分类号： H01L27/15 ,  H01S5/00 ,  H01S5/026 ,  H01S5/12 ,  H01S5/125 ,  H01S3/19 ,  H01L33/00

CPC分类号： H01S5/125 ,  H01S5/0265 ,  H01S5/12

摘要： A semiconductor integrated light emitting device is disclosed which comprises a light emitting waveguide including a light emitting layer, and an external waveguide directly coupled to the light emitting waveguide. In accordance with the present invention, the light emitting waveguide and the external waveguide are mutually laminated in the vicinity of a region where they are directly coupled together.The intensity of the optical output from the light emitting waveguide is modulated in the external waveguide by the electroabsorption effect.

摘要翻译： 公开了一种半导体集成发光器件，其包括包括发光层的发光波导和直接耦合到发光波导的外部波导。 根据本发明，发光波导和外部波导相互层叠在直接耦合在一起的区域附近。 通过电吸收效应在外部波导管中调制来自发光波导的光输出的强度。

公开(公告)号：US08619551B2

公开(公告)日：2013-12-31

申请号：US11651493

申请日：2007-01-10

申请人： Masatoshi Suzuki ,  Hiroyuki Ibe ,  Tazuko Tomioka ,  Kyosuke Dobashi ,  Hiroyuki Inamura

发明人： Masatoshi Suzuki ,  Hiroyuki Ibe ,  Tazuko Tomioka ,  Kyosuke Dobashi ,  Hiroyuki Inamura

IPC分类号： G01R31/08 ,  G06F15/173 ,  G02F1/00

CPC分类号： H04L45/22 ,  H04L45/28 ,  H04L47/70 ,  H04L47/724 ,  H04L47/728 ,  H04L47/746 ,  H04L47/829 ,  H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0081

摘要： A protection path reservation method which reserves protection paths to avoid a node failure for each transmission path on a network formed of a plurality of nodes, comprising assuming the nodes as an imaginary failure node in turn in a condition in which the node failure is not present in the network, and selecting N neighbor nodes connected to the imaginary failure node through N links, wherein the imaginary failure nodes sequentially transmit protection path reservation request messages to neighbor nodes, and the nodes which have received the protection path reservation request messages sequentially, one by one, reserve N−1 protection paths starting from the nodes.

摘要翻译： 一种保护路径预留方法，其保留保护路径以避免由多个节点形成的网络上的每个传输路径的节点故障，包括在不存在节点故障的情况下依次假设节点为虚设故障节点 并且通过N个链路选择连接到虚拟故障节点的N个相邻节点，其中虚拟故障节点顺序地向相邻节点发送保护路径预留请求消息，并且已经接收到保护路径预留请求消息的节点顺序地发送 从节点开始，保留N-1个保护路径。

公开(公告)号：US08194140B2

公开(公告)日：2012-06-05

申请号：US12211520

申请日：2008-09-16

申请人： Masatoshi Suzuki

发明人： Masatoshi Suzuki

IPC分类号： G03B17/40 ,  H04N5/235

CPC分类号： G03B17/40 ,  G03B13/36 ,  H04N5/232 ,  H04N5/23219 ,  H04N5/23222

摘要： An image pickup apparatus includes a system controller and a face detector, and can register face data of a photographer for a self-timer shooting mode in advance. In the self-timer shooting mode, the face detector extracts face data of people in a subject field from an image signal. When the system controller determines, on the basis of the extracted face data and the registered face data, that the photographer can be detected, the apparatus starts countdown for automatic shooting. Consequently, the apparatus can pick up an image of the photographer without fail, and the photographer can securely strike a pose within the countdown period of time. Furthermore, the apparatus can determine the countdown period of time optionally, thereby enabling the self-timer shooting to be executed depending on the personality of the photographer.

摘要翻译： 图像拾取装置包括系统控制器和面部检测器，并且可以预先登记摄像机的面部数据以进行自拍拍摄模式。 在自拍拍摄模式中，面部检测器从图像信号中提取被摄体区域中的人物的面部数据。 当系统控制器基于所提取的面部数据和登记的面部数据确定可以检测摄影者时，该设备开始自动拍摄的倒计时。 因此，该装置可以拾取摄影者的图像而不会失败，摄影者可以在倒计时期间内安全地拍摄姿势。 此外，该装置可以任选地确定倒计时周期，从而可以根据拍摄者的个性执行自拍定时拍摄。

公开(公告)号：US20060231059A1

公开(公告)日：2006-10-19

申请号：US11391080

申请日：2006-03-28

申请人： Masatoshi Suzuki ,  Hayato Maehara ,  Satosho Iijima

发明人： Masatoshi Suzuki ,  Hayato Maehara ,  Satosho Iijima

IPC分类号： F02B75/32

CPC分类号： F02B75/32 ,  F16F15/26 ,  Y10T74/2121 ,  Y10T74/2183

摘要： An internal combustion engine includes a connecting rod that connects a crankpin and a piston. The connecting rod has first and second connecting rods, and a guide piston is disposed at a connecting portion between the first and second connecting rods. Deformed portions are formed on a lower end portion of a guide piston and on a balancer weight portion of a crankshaft in order to reduce the whole length of the connecting rod, whereby a bottom dead center of the guide piston is set to a lower position. The engine has improved thermal efficiency by reducing the distance between the crank portion and the piston, increasing the speed of behavior of the piston at a position near a top dead center to reduce thermal energy loss, and preventing generation of knocking.

摘要翻译： 内燃机包括连接曲轴销和活塞的连杆。 连杆具有第一和第二连杆，并且导向活塞设置在第一和第二连接杆之间的连接部分处。 变形部分形成在导向活塞的下端部分和曲轴的平衡重重体部分上，以便减小连杆的整个长度，由此将导向活塞的下止点设定在较低位置。 发动机通过减小曲柄部分和活塞之间的距离来提高热效率，增加活塞在靠近上止点的位置的行为速度，以减少热能损失，并防止产生爆震。

公开(公告)号：US07035552B2

公开(公告)日：2006-04-25

申请号：US10186099

申请日：2002-06-28

申请人： Michiaki Hayashi ,  Tomohiro Otani ,  Masatoshi Suzuki

发明人： Michiaki Hayashi ,  Tomohiro Otani ,  Masatoshi Suzuki

IPC分类号： H04B10/06

CPC分类号： H04B10/07953 ,  H04B10/69

摘要： An optical reception apparatus comprises an optical receiver to receive an optical signal from an optical transmission line, an error corrector to correct an error of the received signal and to transmit the error-corrected signal and error rate information before error correction, a judging apparatus to judge transmission quality of the optical transmission line according to the error rate information from the error corrector and a threshold value equal to an error rate lower than an error correction limit of the error corrector, and a selective breaker to transmit the signal whose error is corrected by the error corrector in normal state and to block transmission of the signal whose error is corrected by the error corrector when the judged result by the judging apparatus indicates deterioration of the transmission quality of the optical transmission line.

摘要翻译： 一种光接收装置，包括从光传输线接收光信号的光接收机，纠错装置，用于校正接收信号的误差，并在误差校正之前发送误差校正信号和误码率信息;判断装置， 根据来自误差校正器的误码率信息判断光传输线路的传输质量，以及等于误差率低于误差校正器的纠错极限的阈值，以及用于发送误差校正的信号的选择性断路器 通过误差校正器处于正常状态，并且当判断装置的判断结果指示光传输线的传输质量劣化时，阻止误差校正误差的信号的发送。

公开(公告)号：US06798558B2

公开(公告)日：2004-09-28

申请号：US10465366

申请日：2003-06-18

申请人： Michiaki Hayashi ,  Tomohiro Otani ,  Masatoshi Suzuki

发明人： Michiaki Hayashi ,  Tomohiro Otani ,  Masatoshi Suzuki

IPC分类号： G02F101

CPC分类号： G02F3/00 ,  G02F1/0121

摘要： An optical clock multiplier comprises a phase modulator (12) to shift a phase in pulse duration of an input optical clock pulse by &pgr;, a polarization mode dispersion device (16) having a predetermined time difference between first and second polarizations orthogonal to each other to divide an output light from the phase modulator into the first and second polarization components, and a polarization device (20) to extract one of polarization components in a third polarization practically inclined at an angle of 45° against the first polarization and a fourth polarization orthogonal to the third polarization out of the output light from the polarization mode dispersion device.

公开(公告)号：US06768872B1

公开(公告)日：2004-07-27

申请号：US09670003

申请日：2000-09-25

申请人： Takehiro Tsuritani ,  Keiji Tanaka ,  Noboru Edagawa ,  Masatoshi Suzuki

发明人： Takehiro Tsuritani ,  Keiji Tanaka ,  Noboru Edagawa ,  Masatoshi Suzuki

IPC分类号： H04J1402

CPC分类号： H04B10/25253

摘要： An optical transmitter outputs WDM signal lights comprising signal lights with 100 wavelengths of 10 Gbit/s, onto an optical transmission fiber. In the optical transmission line, a transmission fiber and a local area dispersion compensation fiber are disposed per repeater span defined by an optical amplification repeater, the local area dispersion compensation fiber is for compensating the average chromatic dispersion in the repeater span to become 2 ps/nm/km as well as a dispersion slope to become zero, and a wide area dispersion compensation fiber for compensating the average chromatic dispersion to become −0.2 ps/nm/km as well as the dispersion slope to become zero is disposed per predetermined number of optical repeater spans. The optical transmission fiber comprises a single mode optical fiber with large core diameter having a zero dispersion wavelength at a 1.3 &mgr;m band and plus chromatic dispersion at a signal wavelength band (a 1.55 &mgr;m band). The optical amplification repeater comprises an erbium-doped optical fiber to be pumped by a 0.98 &mgr;m band pumping light.

摘要翻译： 光发射机将包含10兆比特/秒波长的信号光的WDM信号灯输出到光传输光纤上。 在光传输线路中，在由光放大中继器限定的每个中继器跨度上布置传输光纤和局部色散补偿光纤，局部色散补偿光纤用于将中继器跨度中的平均色散补偿为2ps / nm / km以及色散斜率为零，并且将用于将平均色散补偿为-0.2ps / nm / km以及将色散斜率补偿为零的广域色散补偿光纤设置为每个预定数量的 光中继器。 光传输光纤包括在1.3mum波段处具有零色散波长的大芯径的单模光纤，并且在信号波长带（1.55μm波段）处加上色散。 光放大中继器包括一个掺铒光纤，通过0.98 mum带激发光泵浦。

公开(公告)号：US06748178B2

公开(公告)日：2004-06-08

申请号：US09795245

申请日：2001-02-26

申请人： Takayuki Miyakawa ,  Masatoshi Suzuki ,  Noboru Edagawa

发明人： Takayuki Miyakawa ,  Masatoshi Suzuki ,  Noboru Edagawa

IPC分类号： H04B1018

CPC分类号： H04B10/2916 ,  H04B2210/003

摘要： An optical fiber (12a) with a large effective core area and a large chromatic dispersion value is disposed on an input side of signal light, and an optical fiber (12b) with a small effective core area and a small chromatic dispersion value or a chromatic dispersion value of negative polarity is disposed on an output side of the signal light. A pumping light source (14) generates pumping light of 1450 nm to cause Raman amplification of 1550 nm in the optical fiber (12b). The output light from the pumping light source (14) enters the optical fiber (12b) from the back through a WDM optical coupler (16). Provided that y=(Pin−&agr;)/(Pp·10 Log L) where input power of the optical fiber (12a) (i.e. output power of an optical transmitter (10)) is Pin, a total loss of the optical fibers (12a and 12b) is &agr;, pumping power for Raman amplification is Pp, and a total length of the optical fibers (12a and 12b) is L, the relation between ratio x (0≦x≦1) of the optical fiber (12b) and y is expressed as y=6.63×10−2x−0.077. Here, the satisfactory x value is in a range from +0.2 to −0.2 of the y value.

摘要翻译： 具有大的有效核​​心面积和大的色散值的光纤（12a）被布置在信号光的输入侧，并且具有小的有效核心区域和小的色散值或色度的光纤（12b） 负极性的色散值被设置在信号光的输出侧。 泵浦光源（14）产生1450nm的泵浦光，以在光纤（12b）中引起1550nm的拉曼放大。 来自泵浦光源（14）的输出光通过WDM光耦合器（16）从后面进入光纤（12b）。 假设光纤（12a）的输入功率（即，光发射器（10）的输出功率））为Pin的y =（Pin-alpha）/（Pp.10Log L），光纤的总损耗 12a和12b）为α，用于拉曼放大的泵送功率为Pp，光纤（12a和12b）的总长度为L，光纤的比例x（0 <= x <= 1） 12b），y表示为y = 6.63×10 -2 x-0.077。 这里，满意的x值在y值的+0.2〜-0.2的范围内。

公开(公告)号：US06728437B2

公开(公告)日：2004-04-27

申请号：US09882352

申请日：2001-06-15

申请人： Noboru Edagawa ,  Masatoshi Suzuki

发明人： Noboru Edagawa ,  Masatoshi Suzuki

IPC分类号： G02B626

CPC分类号： H01S3/09415 ,  H01S3/09408 ,  H01S3/302

摘要： An object of the present invention is to prevent an increase of the degree of polarization of an output pumping light even if one of pumping light sources has a failure. Laser diodes (30a, 30b) are composed of FP-LDs made of InGaAsP to laser-oscillate at 1480 nm band. The outputs from the laser diodes (30a, 30b) enter a polarizing beam splitter (32) in orthogonal state of polarization and are combined there. The combined light by the polarizing beam splitter (32) enters a depolarizing element (34) and is depolarized there.

摘要翻译： 本发明的一个目的是防止输出泵浦光的偏振度的增加，即使其中一个泵浦光源有故障。 激光二极管（30a，30b）由由InGaAsP制成的FP-LD组成，以1480nm波段激光振荡。 来自激光二极管（30a，30b）的输出以正交偏振态进入偏振光束分离器（32）并在其中组合。 由偏振分束器（32）组合的光进入去极化元件（34），并在那里去极化。