公开(公告)号：US20210410322A1

公开(公告)日：2021-12-30

申请号：US17277202

申请日：2019-09-18

Applicant: NEC Corporation

Inventor： Shingo KAMEDA

IPC: H05K7/20 ,  H01S5/024 ,  G02B6/44 ,  H04B10/29

Abstract: [Problem] To suppress the number of man-hours required to handle design changes accompanying a change in heat generation in an internal unit stored inside an electric device.
[Solution] The present invention includes: at least one internal unit, which is a heat generating body and has a prescribed cross-sectional external shape; at least one heat conduction unit, which is a good conductor of heat and has a prescribed cross-sectional external shape; and a device housing in which two or more of the internal unit and the heat conduction unit can be stored in a state of being adjacent to each other with the prescribed cross-sectional external shapes thereof overlapping each other, the device housing thermally connecting to the stored internal unit or the stored heat conduction unit.

公开(公告)号：US20200059303A1

公开(公告)日：2020-02-20

申请号：US16487149

申请日：2018-03-09

Applicant: NEC Corporation

Inventor： Shingo KAMEDA

IPC: H04B10/80 ,  H04B10/291 ,  H04B10/50

Abstract: When, in each of optical submarine relay apparatuses of the optical submarine cable system in which the optical submarine relay apparatus is arranged in each relay section of an optical submarine cable, a Laser Diode (LD) driving device for excitation (11) for outputting an excitation light to excite an optical amplifier is configured to include a plurality of LD driving circuits whose requiring currents are different from one another, which are, for example, a first LD driving circuit (111a) of a required current Ia and a second LD driving circuit (111b) of a required current (Ib) therein, a power feeding line for feeing power to the first LD driving circuit (111a) and a power feeding line for feeing power to the second LD driving circuit (111b) are configured to be connected in parallel to each other.