公开(公告)号：US20220397388A1

公开(公告)日：2022-12-15

申请号：US17343077

申请日：2021-06-09

申请人： Chunshu Zhang ,  Jie Lin ,  Masaki Kato

发明人： Chunshu Zhang ,  Jie Lin ,  Masaki Kato

IPC分类号： G01B11/16 ,  H04B10/079 ,  G02B6/12

摘要： An apparatus for monitoring strain in an optical chip in silicon photonics platform. The apparatus includes a silicon photonics substrate shared with the optical chip. Additionally, the apparatus includes an optical input configured in the silicon photonics substrate to supply an input signal of a single wavelength. The apparatus further includes a first waveguide arm and a second waveguide arm embedded in the silicon photonics substrate to form an on-chip interferometer. The second waveguide arm forms a delay line being disposed at a region in or adjacent to the optical chip. The on-chip interferometer is configured to generate an interference pattern serving as an indicator of strain distributed at the region in or adjacent to the optical chip. The interference pattern is caused by a temperature-independent phase shift at the single wavelength of the interferometer between the first waveguide arm and the second waveguide arm.

公开(公告)号：US10751998B2

公开(公告)日：2020-08-25

申请号：US16285428

申请日：2019-02-26

申请人： Masaki Kato

发明人： Masaki Kato

IPC分类号： B41J2/175 ,  B41J2/145 ,  B41J2/18 ,  B41J2/14

摘要： A liquid discharge head includes a plurality of nozzles to discharge a liquid; a plurality of pressure chambers communicating with the plurality of nozzles; a plurality of individual supply channels communicating with the plurality of pressure chambers; a plurality of supply ports communicating with the plurality of individual supply channels; a plurality of common-supply branch channels communicating with two or more of the plurality of individual supply channels through the plurality of supply ports; a common-supply main channel communicating with the plurality of common-supply branch channels; and a plurality of supply-side dampers, each of the plurality of supply-side dampers forming a part of a wall of each of the plurality of common-supply branch channels.

公开(公告)号：US09812929B2

公开(公告)日：2017-11-07

申请号：US14372493

申请日：2012-04-16

申请人： Yuji Shirakata ,  Dai Nakajima ,  Masahiko Fujita ,  Masaki Kato

发明人： Yuji Shirakata ,  Dai Nakajima ,  Masahiko Fujita ,  Masaki Kato

IPC分类号： H02K9/00 ,  H02K11/04 ,  H02P27/06 ,  H02K11/05 ,  H02K5/08 ,  H02K5/14 ,  H02K5/22 ,  H02K15/12 ,  H02K11/33

CPC分类号： H02K9/00 ,  H02K5/08 ,  H02K5/141 ,  H02K5/225 ,  H02K11/046 ,  H02K11/048 ,  H02K11/05 ,  H02K11/33 ,  H02K15/12 ,  H02P27/06

摘要： Two or more switching devices (36) and two or more lead frames (41, 42, 43, and 44) are integrally molded by use of a molding resin (37) so that a power module (30) is formed; the power module (30) is made to adhere to a heat sink (32) via an insulating material (31); the power module (30) and the heat sink (32) are fixed to a housing (33) of the power module composite (23); the power module composite (23) is fixed to a case (6) of an electric rotating machine (1) via the housing (33).

公开(公告)号：US09479032B2

公开(公告)日：2016-10-25

申请号：US13877401

申请日：2011-01-06

申请人： Masaki Kato ,  Masahiko Fujita ,  Kazuyasu Sakamoto

发明人： Masaki Kato ,  Masahiko Fujita ,  Kazuyasu Sakamoto

IPC分类号： H02K11/00 ,  H02K5/22 ,  H02K11/04

CPC分类号： H02K11/046 ,  H02K5/225 ,  H02K11/048

摘要： The rotary electric machine main body includes: a stator; a rotor that includes a rotating shaft and that is rotatable relative to the stator; and a supporting body that supports the stator and the rotor. The controlling apparatus includes a power circuit portion that is disposed around the rotating shaft, and that converts electric power that is received from the rotary electric machine main body or electric power that is supplied to the rotary electric machine main body between alternating current and direct current. The power circuit portion includes: a power module; and an electric power interconnecting part that includes a conductor that is connected to a terminal of the power module. The electric power interconnecting part is disposed so as to avoid overlapping with a region of the power module when the power circuit portion is viewed in an axial direction of the rotating shaft.

摘要翻译： 旋转电机主体包括：定子; 转子，其包括旋转轴并且可相对于所述定子旋转; 以及支撑定子和转子的支撑体。 控制装置包括：电源电路部，其设置在旋转轴的周围，并且将从旋转电机主体接收的电力或供给到旋转电机主体的电力转换为交流电和直流电 。 电源电路部分包括：电源模块; 以及电力互连部，其包括连接到所述电力模块的端子的导体。 电力互连部被设置为当从旋转轴的轴向观察电力电路部时，避免与电​​力模块的区域重叠。

公开(公告)号：US09419742B2

公开(公告)日：2016-08-16

申请号：US13340982

申请日：2011-12-30

申请人： Radhakrishnan L. Nagarajan ,  Masaki Kato ,  Michael Francis Van Leeuwen ,  Timothy Butrie

发明人： Radhakrishnan L. Nagarajan ,  Masaki Kato ,  Michael Francis Van Leeuwen ,  Timothy Butrie

IPC分类号： G02B6/12 ,  H04J14/02 ,  H04B10/50

CPC分类号： H04J14/0254 ,  G02B6/12019 ,  H04B10/506

摘要： Consistent with one example of the disclosed implementations, a photonic integrated circuit (PIC) may be provided that includes s group of lasers and an arrayed waveguide grating (AWG) disposed on a substrate. Each laser in the group may supply an optical signal, such that each optical signal has a different wavelength. Each laser may be tunable to at least two designated wavelengths, which are separated from one another by a free spectral range (FSR) of the AWG. As a result, the optical signals provided from each laser may be combined by the AWG, regardless of which designated wavelength the optical signals have. Accordingly, a PIC may be provided that has a relatively simple construction but can supply optical signals having tunable wavelengths.

摘要翻译： 与所公开的实施例的一个示例一致，可以提供包括s组激光器和设置在衬底上的阵列波导光栅（AWG）的光子集成电路（PIC）。 组中的每个激光器可以提供光信号，使得每个光信号具有不同的波长。 每个激光器可以被调谐到至少两个指定的波长，它们通过AWG的自由光谱范围（FSR）彼此分开。 结果，从每个激光器提供的光信号可以由AWG组合，而不管光信号具有哪个指定波长。 因此，可以提供具有相对简单结构但可提供具有可调波长的光信号的PIC。

公开(公告)号：US09158068B2

公开(公告)日：2015-10-13

申请号：US13177363

申请日：2011-07-06

申请人： Masaki Kato ,  Radhakrishnan L. Nagarajan

发明人： Masaki Kato ,  Radhakrishnan L. Nagarajan

IPC分类号： G02B6/34 ,  G02B6/12

CPC分类号： G02B6/12011

摘要： Consistent with the present disclosure, an AWG is provided that has grating waveguide groupings that extend between a first free space region and a second free space region. The difference in length (ΔL) between successive grating waveguides differs for each grouping of grating waveguides, such that, for example, the ΔL associated with a given grating waveguide grouping is not an integer multiple of any of the other grating waveguide groupings. The grating waveguide groupings direct images having relatively small wavelength differences to a given output waveguide, and each grating waveguide grouping has an associated passband, which is similar to that of the conventional AWG. Unlike the conventional AWG, however, multiple grating waveguide groupings are included in the same AWG, such that the spectra associated with the grating waveguide groupings combine to provide a transmission characteristic having a passband that is greater than any individual passband. Accordingly, even if the optical signal wavelengths vary or are offset from the center wavelength of the passband, such wavelengths may still be transmitted with less loss.

摘要翻译： 根据本公开，提供了AWG，其具有在第一自由空间区域和第二自由空间区域之间延伸的光栅波导分组。 对于每组光栅波导，连续光栅波导之间的长度差（＆Dgr; L）不同，例如，与给定光栅波导组合相关联的＆Dgr; L不是任何其他光栅波导的整数倍 分组。 光栅波导分组将具有相对小的波长差的图像分配给给定的输出波导，并且每个光栅波导组具有相关的通带，其类似于常规的AWG。 然而，与传统AWG不同，多个光栅波导分组被包括在相同的AWG中，使得与光栅波导分组相关联的光谱组合以提供具有大于任何单个通带的通带的传输特性。 因此，即使光信号波长变化或偏离通带的中心波长，这样的波长仍然可以以较少的损耗传输。

公开(公告)号：US09129949B2

公开(公告)日：2015-09-08

申请号：US13881654

申请日：2011-02-09

申请人： Shinsuke Asada ,  Kenjiro Nagao ,  Dai Nakajima ,  Yuetsu Watanabe ,  Yoshihito Asao ,  Takuya Oga ,  Masaki Kato

发明人： Shinsuke Asada ,  Kenjiro Nagao ,  Dai Nakajima ,  Yuetsu Watanabe ,  Yoshihito Asao ,  Takuya Oga ,  Masaki Kato

IPC分类号： H01L23/495 ,  H01L23/12 ,  H01L23/00 ,  H01L23/36 ,  H01L23/31

CPC分类号： H01L23/49568 ,  H01L23/3107 ,  H01L23/36 ,  H01L23/49524 ,  H01L23/49562 ,  H01L23/49575 ,  H01L24/05 ,  H01L24/06 ,  H01L24/29 ,  H01L24/40 ,  H01L24/41 ,  H01L24/45 ,  H01L24/48 ,  H01L24/73 ,  H01L24/83 ,  H01L24/84 ,  H01L2224/04026 ,  H01L2224/04034 ,  H01L2224/04042 ,  H01L2224/0603 ,  H01L2224/06051 ,  H01L2224/06181 ,  H01L2224/291 ,  H01L2224/2919 ,  H01L2224/40137 ,  H01L2224/40139 ,  H01L2224/40247 ,  H01L2224/4103 ,  H01L2224/41051 ,  H01L2224/45015 ,  H01L2224/45124 ,  H01L2224/48139 ,  H01L2224/48247 ,  H01L2224/73221 ,  H01L2224/73263 ,  H01L2224/73265 ,  H01L2224/83411 ,  H01L2224/83455 ,  H01L2224/83801 ,  H01L2224/8385 ,  H01L2224/84801 ,  H01L2924/00014 ,  H01L2924/01029 ,  H01L2924/07802 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/1306 ,  H01L2924/13091 ,  H01L2924/181 ,  H01L2924/014 ,  H01L2924/00 ,  H01L2924/00012 ,  H01L2224/37099

摘要： A power semiconductor module (100) includes: an electrode plate (2) in which a body portion (2a) and an external connection terminal portion (2b) are integrally formed, and the body portion (2a) is arranged on the same flat surface; a semiconductor chip (1) mounted on one surface (mounting surface) (2c) of the body portion (2a); and a resin package (3) in which the other surface (heat dissipation surface) (2d) of the body portion (2a) is exposed, and the body portion (2a) of the electrode plate (2) and the semiconductor chip (1) are sealed with resin. The heat dissipation surface (2d) is the same surface as the bottom (3a) of the resin package (3); and consequently, heat dissipation properties and reliability are improved and a reduction in size can be achieved.

摘要翻译： 功率半导体模块（100）包括：一体形成有主体部分（2a）和外部连接端子部分（2b）的电极板（2），并且主体部分（2a）布置在同一平面 ; 安装在主体部分（2a）的一个表面（安装表面）（2c）上的半导体芯片（1）; 和主体部（2a）的另一面（散热面）（2d）露出的树脂封装体（3）和电极板（2）的主体部分（2a）和半导体芯片（1） ）用树脂密封。 散热面（2d）与树脂封装（3）的底部（3a）相同。 因此，散热性和可靠性得到改善，并且可以实现尺寸的减小。

公开(公告)号：US09031412B2

公开(公告)日：2015-05-12

申请号：US12612646

申请日：2009-11-04

申请人： Radhakrishnan L. Nagarajan ,  Fred A. Kish, Jr. ,  David F. Welch ,  Drew D. Perkins ,  Masaki Kato

发明人： Radhakrishnan L. Nagarajan ,  Fred A. Kish, Jr. ,  David F. Welch ,  Drew D. Perkins ,  Masaki Kato

IPC分类号： H04J14/02 ,  H04B10/50 ,  G02B6/12 ,  B82Y20/00 ,  H01S5/024 ,  H01S5/223 ,  H01S5/40 ,  G02B6/28 ,  G02B6/293 ,  H01S5/00 ,  H01S5/022 ,  H01S5/026 ,  H01S5/0683 ,  H01S5/10 ,  H01S5/12 ,  H01S5/343

CPC分类号： G02B6/12033 ,  B82Y20/00 ,  G02B6/12019 ,  G02B6/2813 ,  G02B6/293 ,  G02B6/29317 ,  G02B6/29338 ,  G02B6/29352 ,  H01S5/005 ,  H01S5/0085 ,  H01S5/02248 ,  H01S5/024 ,  H01S5/0261 ,  H01S5/0265 ,  H01S5/0268 ,  H01S5/0683 ,  H01S5/1032 ,  H01S5/12 ,  H01S5/1221 ,  H01S5/2231 ,  H01S5/34306 ,  H01S5/4031 ,  H01S5/4087 ,  H04B10/506

摘要： A coolerless photonic integrated circuit (PIC), such as a semiconductor electro-absorption modulator/laser (EML) or a coolerless optical transmitter photonic integrated circuit (TxPIC), may be operated over a wide temperature range at temperatures higher then room temperature without the need for ambient cooling or hermetic packaging. Since there is large scale integration of N optical transmission signal WDM channels on a TxPIC chip, a new DWDM system approach with novel sensing schemes and adaptive algorithms provides intelligent control of the PIC to optimize its performance and to allow optical transmitter and receiver modules in DWDM systems to operate uncooled. Moreover, the wavelength grid of the on-chip channel laser sources may thermally float within a WDM wavelength band where the individual emission wavelengths of the laser sources are not fixed to wavelength peaks along a standardized wavelength grid but rather may move about with changes in ambient temperature. However, control is maintained such that the channel spectral spacing between channels across multiple signal channels, whether such spacing is periodic or aperiodic, between adjacent laser sources in the thermally floating wavelength grid are maintained in a fixed relationship. Means are then provided at an optical receiver to discover and lock onto floating wavelength grid of transmitted WDM signals and thereafter demultiplex the transmitted WDM signals for OE conversion.

公开(公告)号：US09025912B2

公开(公告)日：2015-05-05

申请号：US13537725

申请日：2012-06-29

申请人： Radhakrishnan L. Nagarajan ,  Masaki Kato

发明人： Radhakrishnan L. Nagarajan ,  Masaki Kato

IPC分类号： G02B6/00 ,  G02B6/26

CPC分类号： G02B6/26 ,  G02B6/12014 ,  G02B6/12019 ,  G02B6/12023

摘要： An optical device may include a substrate and an arrayed waveguide grating provided on the substrate. The arrayed waveguide grating may include a first slab or a second slab and multiple waveguides extending therebetween. The optical device may also include a layer of material provided on one of the first slab or second slab. The layer of material may have a thickness such that first light may have a first polarization is absorbed by the material and second light may have a second polarization passes through the one of the first slab or the second slab.

摘要翻译： 光学器件可以包括衬底和设置在衬底上的阵列波导光栅。 阵列波导光栅可以包括第一平板或第二平板以及在它们之间延伸的多个波导。 光学装置还可以包括设置在第一板或第二板之一上的一层材料。 材料层可以具有这样的厚度，使得第一光可以具有第一极化被材料吸收，并且第二光可以具有穿过第一板或第二板之一的第二极化。

公开(公告)号：US20140354087A1

公开(公告)日：2014-12-04

申请号：US14372808

申请日：2012-04-16

申请人： Masaki Kato ,  Masahiko Fujita

发明人： Masaki Kato ,  Masahiko Fujita

IPC分类号： H02K11/04 ,  H02K9/06 ,  H02K5/18 ,  H02K5/02

CPC分类号： H02K11/048 ,  H02K5/02 ,  H02K5/08 ,  H02K5/18 ,  H02K9/06 ,  H02K11/046 ,  H02K11/33

摘要： A power module composite includes a power module (34) in which switching devices (32) included in an electric-power conversion circuit are molded, a driver module (37) that includes a control circuit (35) for controlling the switching devices (32) and is molded, a housing (39) containing the power module (34) and the driver module (37), and a heat sink (38) that is fixed to the housing (39) and refrigerates the switching devices (32); the power module 34 and the driver module 37 are mounted in that order on the heat sink (38) in such a way as to be superimposed on each other.

摘要翻译： 一种功率模块复合材料，包括：电源模块（34），其中包含在电力转换电路中的开关装置（32）被模制;驱动器模块（37），其包括控制电路（35），用于控制开关装置 ）并且被模制，包含所述功率模块（34）和所述驱动器模块（37）的壳体（39）和固定到所述壳体（39）并且冷却所述开关装置（32）的散热器（38） 电源模块34和驱动器模块37以这样的顺序安装在散热器（38）上，以便彼此重叠。