公开(公告)号：US20190115721A1

公开(公告)日：2019-04-18

申请号：US16157199

申请日：2018-10-11

Applicant: FUJITSU LIMITED

Inventor： Hirotomo Izumi ,  Shigeki Kawaai ,  Daisuke USUI ,  Yohei Miura

IPC: H01S5/0683 ,  H01S5/042 ,  H01S5/068

Abstract: A laser diode control circuit includes, a control signal supply circuit that supplies a control signal including a direct current component and an alternating current component to a laser diode, an optical output signal acquisition circuit that acquires an optical output signal indicating an optical output of the laser diode according to the control signal, a phase determination circuit that determines whether a phase of the alternating current component included in the optical output signal is the same as the phase of the alternating current component included in the control signal, and a control signal determination circuit that determines to decrease the direct current component of the control signal when it is determined that the phase of the alternating current component included in the optical output signal is not the same as the phase of the alternating current component included in the control signal.

公开(公告)号：US20170359153A1

公开(公告)日：2017-12-14

申请号：US15182567

申请日：2016-06-14

Applicant: FUJITSU LIMITED

Inventor： Daisuke USUI ,  Masaya KIBUNE ,  Nikola NEDOVIC

IPC: H04L1/20 ,  H03K5/24 ,  H04L7/00 ,  H03K5/06

CPC classification number: H04L1/203 ,  H03K5/06 ,  H03K5/24 ,  H04L7/0012

Abstract: A method of measuring linearity characteristics of a delay line may be provided. The method may include generating an output signal from a receiver including a delay line. The method may also include measuring linearity characteristics of the delay line based on a target performance parameter of the output signal.

公开(公告)号：US20150087229A1

公开(公告)日：2015-03-26

申请号：US14328039

申请日：2014-07-10

Applicant: FUJITSU LIMITED

Inventor： Daisuke USUI ,  MAKOTO SUWADA

IPC: H04B5/00

CPC classification number: H04B5/0075 ,  H04B5/0031

Abstract: A memory includes a control layer that includes a first radio communication unit that performs radio communication and a control unit that controls the radio communication; and a memory layer that includes a second radio communication unit that performs the radio communication with the first radio communication unit and a first storage unit that stores information, the memory layer being provided on the control layer.

Abstract translation: 存储器包括：控制层，包括执行无线电通信的第一无线电通信单元和控制无线电通信的控制单元; 以及存储层，其包括执行与第一无线电通信单元的无线电通信的第二无线电通信单元和存储信息的第一存储单元，该存储层设置在控制层上。

公开(公告)号：US20140270656A1

公开(公告)日：2014-09-18

申请号：US14179596

申请日：2014-02-13

Applicant: FUJITSU LIMITED

Inventor： Kohei Choraku ,  Tetsuro Yamada ,  TAKAHIRO OOI ,  Masahiro Iwama ,  Daisuke USUI

IPC: G02B6/42

CPC classification number: G02B6/423 ,  G02B6/4231 ,  G02B6/4249 ,  G02B6/43

Abstract: An electronic device includes a board including an electronic component, a plurality of optical interface units that include an optical element which input or output light and that are provided on the board, and a plurality of individual positioning units that position a plurality of respective optical waveguides which are separate from each other at least at tip portions on a side of the optical interface units and which are optically aligned with the optical element with respect to the optical interface units independently from each other.

Abstract translation: 一种电子装置，包括：包括电子部件的板，包括输入或输出光并设置在所述板上的光学元件的多个光学接口单元;以及多个单独的定位单元，其定位多个相应的光波导 它们至少在光学接口单元的一侧的尖端部分彼此分离，并且彼此相对于光学接口单元与光学元件光学对准。

公开(公告)号：US20140270631A1

公开(公告)日：2014-09-18

申请号：US14136218

申请日：2013-12-20

Applicant: Fujitsu Limited

Inventor： Kohei CHORAKU ,  Daisuke USUI ,  Masahiro IWAMA ,  Takahiro OOI ,  Tetsuro YAMADA

IPC: G02B6/12 ,  G02B6/46

CPC classification number: G02B6/46 ,  G02B6/4214 ,  G02B6/4221 ,  G02B6/43 ,  G02B21/36 ,  Y10T29/49769 ,  Y10T29/53022

Abstract: A method for manufacturing an optical transmission device, includes: arranging a plurality of optical waveguides including waveguide mirrors, a transmission-side optical module and a reception-side optical module on one side of a substrate; photographing, with a photographic device, at least one waveguide mirror, and the transmission-side optical module or the reception-side optical module corresponding to the waveguide mirror, from another side of the substrate via an opening formed in the substrate; detecting optical-axis centers of the transmission-side optical module or optical-axis centers of the reception-side optical module, and central positions of reflective surfaces of the waveguide mirrors corresponding to the detected optical-axis centers, from a result of the photographing; and aligning and fixing a position relationship between the optical waveguides and the transmission-side optical module or the reception-side optical module based on a result of the detecting.

Abstract translation: 一种光传输装置的制造方法，其特征在于，包括：在基板的一侧配置多个波导管，包括波导反射镜，透射侧光学模块和接收侧光学模块; 通过形成在基板中的开口从基板的另一侧，利用照相装置拍摄至少一个波导反射镜和对应于波导反射镜的发送侧光学模块或接收侧光学模块; 根据拍摄结果，检测发送侧光学模块的光轴中心或接收侧光学模块的光轴中心以及与所检测的光轴中心对应的波导反射镜的反射表面的中心位置 ; 并且基于检测结果对准和固定光波导与发射侧光学模块或接收侧光学模块之间的位置关系。

公开(公告)号：US20160338191A1

公开(公告)日：2016-11-17

申请号：US15096680

申请日：2016-04-12

Applicant: FUJITSU LIMITED

Inventor： Megumi TANAKA ,  Daisuke USUI

IPC: H05K1/02 ,  H05K3/00 ,  H01R12/71 ,  H05K1/11

CPC classification number: H05K1/0251 ,  H01R12/585 ,  H01R12/7082 ,  H01R12/737 ,  H05K1/115 ,  H05K1/142 ,  H05K3/0047 ,  H05K3/429 ,  H05K2201/09545 ,  H05K2201/096 ,  H05K2201/10189 ,  H05K2201/10303 ,  H05K2201/1059 ,  H05K2203/0207 ,  H05K2203/1476

Abstract: A circuit board includes: a first surface and a second surface opposite to the first surface; a through hole extending between the first surface and the second surface; a conductor covering an inner wall surface of the through hole, a first end and a second end of the conductor being terminated inside the through hole; and a wire connected to the conductor, wherein a sum of a length from a contact portion where the conductor contacts a connector pin inserted in the through hole to the first end of the conductor, and a length from a wire connecting portion where the conductor is connected to the wire to the second end of the conductor is 0.5 mm or less.

Abstract translation: 电路板包括：与第一表面相对的第一表面和第二表面; 在所述第一表面和所述第二表面之间延伸的通孔; 覆盖所述通孔的内壁表面的导体，所述导体的第一端和第二端终止于所述通孔内; 以及连接到所述导体的导线，其中，所述导体与所述导体与所述导体中插入到所述通孔中的连接器针与所述导体的第一端接触的接触部的长度和从所述导体的导线连接部的长度 连接到导体的导线的第二端是0.5mm以下。

公开(公告)号：US20150063746A1

公开(公告)日：2015-03-05

申请号：US14472459

申请日：2014-08-29

Applicant: FUJITSU LIMITED

Inventor： Daisuke USUI ,  Kohei CHORAKU ,  Masahiro IWAMA

IPC: H04B10/25 ,  G02B6/12

CPC classification number: H04B10/2504 ,  G02B6/421 ,  G02B6/4214 ,  G02B6/43

Abstract: An optical waveguide substrate includes: a substrate body in which an optical waveguide is formed; a cable holding part configured to have a cable holding hole into which a signal cable is inserted, the signal cable having one of an incidence part and an emission part that is arranged so as to face the optical waveguide and having a first magnetic part; and a second magnetic part configured to generate a repulsive force in the cable holding hole in association with the first magnetic part.

Abstract translation: 光波导基板包括：形成光波导的基板主体; 电缆保持部，其构成为具有插入有信号电缆的电缆保持孔，所述信号电缆具有被配置为面对所述光波导并具有第一磁性部的入射部和发射部中的一个; 以及第二磁性部件，其构造成在与所述第一磁性部件相关联地在所述电缆保持孔中产生排斥力。