公开(公告)号：US20210278614A1

公开(公告)日：2021-09-09

申请号：US17132918

申请日：2020-12-23

Applicant: Fujitsu Optical Components Limited

Inventor： TERUHIRO KUBO ,  YUKA OJIMA ,  Tetsuo Ishizaka ,  Tomoyuki Ito

IPC: G02B6/42 ,  H05K7/20 ,  H05K1/02

Abstract: An optical module includes: a board that is accommodated in a housing and in which a through hole is formed; a metal plate that is bonded to an area of the board including the through hole; a component that is mounted on one surface of the metal plate and is arranged inside the through hole; and a thermal-conductive member that is arranged on another surface of the metal plate and transmits heat generated by the component to the housing.

公开(公告)号：US11415764B2

公开(公告)日：2022-08-16

申请号：US17132918

申请日：2020-12-23

Applicant: Fujitsu Optical Components Limited

Inventor： Teruhiro Kubo ,  Yuka Ojima ,  Tetsuo Ishizaka ,  Tomoyuki Ito

IPC: H04B10/00 ,  G02B6/42 ,  H05K1/02 ,  H05K7/20

Abstract: An optical module includes: a board that is accommodated in a housing and in which a through hole is formed; a metal plate that is bonded to an area of the board including the through hole; a component that is mounted on one surface of the metal plate and is arranged inside the through hole; and a thermal-conductive member that is arranged on another surface of the metal plate and transmits heat generated by the component to the housing.

公开(公告)号：US09515728B2

公开(公告)日：2016-12-06

申请号：US14283521

申请日：2014-05-21

Applicant: Fujitsu Optical Components Limited

Inventor： Tetsuo Ishizaka

IPC: H04B10/40 ,  H04B10/079

CPC classification number: H04B10/07955 ,  H04B10/2503 ,  H04B10/40

Abstract: A light source module includes a single light source with two opposite light outputting faces, a first optical amplifier and a second optical amplifier provided on opposite sides of the light source adjacent to the corresponding light outputting faces, and a first monitor configured to monitor an output of the first optical amplifier, wherein a power output level of the first optical amplifier is controlled independently from the second optical amplifier based upon a monitoring result of the first monitor.

Abstract translation: 光源模块包括具有两个相对的光输出面的单个光源，第一光放大器和设置在与相应的光输出面相邻的光源的相对侧上的第二光放大器，以及第一监视器，被配置为监视输出 的第一光放大器，其中，基于第一监视器的监视结果，独立于第二光放大器控制第一光放大器的功率输出电平。

公开(公告)号：US11710914B2

公开(公告)日：2023-07-25

申请号：US16849474

申请日：2020-04-15

Applicant: FUJITSU OPTICAL COMPONENTS LIMITED

Inventor： Tomonori Azuma ,  Tetsuo Ishizaka ,  Koji Otsubo

IPC: G02B6/42 ,  H01R12/52 ,  H01R12/62

CPC classification number: H01R12/52 ,  G02B6/4269 ,  G02B6/4281 ,  H01R12/62

Abstract: An optical module includes: a first board having an optical component bonded thereto with an adhesive; a connection structure part rising from the first board and made of a material having lower thermal conductivity than thermal conductivity of a material of the first board; and a second board joined to the connection structure part.

公开(公告)号：US10536217B2

公开(公告)日：2020-01-14

申请号：US15602756

申请日：2017-05-23

Applicant: Fujitsu Optical Components Limited

Inventor： Tetsuo Ishizaka

IPC: H04B10/50 ,  H04B10/079 ,  H04B10/516 ,  H05B37/02

Abstract: An optical transmission module includes: a bias current drive circuit to drive a bias current of a light-emitting element, on a basis of an input bias current setting value; a modulation current drive circuit to drive a modulation current of the light-emitting element, on a basis of an input modulation current setting value; a light-receiving element to measure an optical output power of the light-emitting element; a determiner to determine whether a difference between a target value of the optical output power and the optical output power measured by the light-receiving element is equal to or more than a threshold; and a controller configured to perform a correction control to the bias current drive circuit so that the bias current is reduced in accordance with the difference, when it is determined that the difference is equal to or more than the threshold by the determiner.

公开(公告)号：US20180006721A1

公开(公告)日：2018-01-04

申请号：US15602756

申请日：2017-05-23

Applicant: Fujitsu Optical Components Limited

Inventor： Tetsuo Ishizaka

IPC: H04B10/079 ,  H04B10/50 ,  H04B10/516 ,  H05B37/02

Abstract: An optical transmission module includes: a bias current drive circuit to drive a bias current of a light-emitting element, on a basis of an input bias current setting value; a modulation current drive circuit to drive a modulation current of the light-emitting element, on a basis of an input modulation current setting value; a light-receiving element to measure an optical output power of the light-emitting element; a determiner to determine whether a difference between a target value of the optical output power and the optical output power measured by the light-receiving element is equal to or more than a threshold; and a controller configured to perform a correction control to the bias current drive circuit so that the bias current is reduced in accordance with the difference, when it is determined that the difference is equal to or more than the threshold by the determiner.