公开(公告)号：NO902897L

公开(公告)日：1991-01-02

申请号：NO902897

申请日：1990-06-28

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： ISHIKAWA SHINJI ,  OHGA YUICHI ,  TSUCHIYA ICHIRO ,  KANAMORI HIROO ,  YOKOTA HIROSHI ,  KYOTO MICHIHISA

IPC: G02B6/00 ,  C03B37/014 ,  C03B37/012

公开(公告)号：AU4687089A

公开(公告)日：1990-07-05

申请号：AU4687089

申请日：1989-12-19

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： TSUCHIYA ICHIRO ,  ISHIKAWA SHINJI ,  SAITOH MASAHIDE ,  ISHIGURO YOICHI ,  KANAMORI HIROO

IPC: C03B37/014 ,  C03B37/012 ,  C03B37/018

Abstract: A heating furnace comprising a furnace body (5), a cylindrical zone heater (4) in said furnace body (5), a muffle tube (3) installed through said furnace body (5) for thermally treating a porous preform (1) made of high purity quartz glass by moving the preform (1) vertically therethrough and a partition means (23) in the portion of the muffle tube (3,33) projecting above the furnace body (5) to divide an interior space of the muffle tube (3) into an upper space and a lower space.

公开(公告)号：NO902897D0

公开(公告)日：1990-06-28

申请号：NO902897

申请日：1990-06-28

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： ISHIKAWA SHINJI ,  OHGA YUICHI ,  TSUCHIYA ICHIRO ,  KANAMORI HIROO ,  YOKOTA HIROSHI ,  KYOTO MICHIHISA

IPC: G02B6/00 ,  C03B37/014 ,  C03B

公开(公告)号：DK2008977T3

公开(公告)日：2013-11-04

申请号：DK07767342

申请日：2007-06-21

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： NAKANISHI TETSUYA ,  HARUNA TETSUYA ,  ISHIKAWA SHINJI

IPC: C03B37/018 ,  C03C13/04 ,  G02B6/00

公开(公告)号：CA2276997C

公开(公告)日：2009-07-28

申请号：CA2276997

申请日：1999-06-30

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： ENDO SHINJI ,  ISHIKAWA SHINJI ,  KAKUI MOTOKI

IPC: H04B10/17 ,  H01S3/067 ,  H01S3/16

Abstract: An optical fiber for optical amplification used for 1.58 .mu.m band signal light amplification, at least a core region thereof being doped with Er, wherein at least a part of the core region is made of silica glass co-doped with Ge and Al together with Er, and an average Er atomic concentration in the core region is from 950 wt-ppm to 3000 wt-ppm inclusive.

公开(公告)号：DE69734167T2

公开(公告)日：2006-06-14

申请号：DE69734167

申请日：1997-12-29

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： KATO TAKATOSHI ,  SASAOKA EISUKE ,  ISHIKAWA SHINJI

IPC: G02B6/028 ,  C03B37/014

公开(公告)号：DE69827334T2

公开(公告)日：2005-03-17

申请号：DE69827334

申请日：1998-08-31

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： SASAKI TAKSHI ,  ISHIKAWA SHINJI

IPC: G02B6/24 ,  B23K26/00 ,  B23K26/21 ,  B23K26/22 ,  B23K33/00 ,  G02B6/38 ,  G02B6/42 ,  G02B6/43

Abstract: An optical component assembling method, in which a first metal housing (10) holding a first optical element and a second metal housing (20) holding a second optical element are made to abut against each other on joint surfaces (10b, 20b) thereof, and irradiated with a laser beam (31) so as to be fixedly welded with each other, characterized in that one of the metal housings overhangs from the other of the metal housings, and the laser beam is radiated in an incident direction &thetas; inclined to the overhanging metal housing side so as to perform spot-welding (30) on outer circumferences of the joint surfaces where the metal housings abut against each other, whereby the decrease of light-intensity at the time of assembly is suppressed to be extremely low.

公开(公告)号：DE69719302D1

公开(公告)日：2003-04-03

申请号：DE69719302

申请日：1997-12-29

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： KATO TAKATOSHI ,  SASAOKA EISUKE ,  ISHIKAWA SHINJI

IPC: C03B37/014 ,  G02B6/16

公开(公告)号：AU757249B2

公开(公告)日：2003-02-13

申请号：AU9459098

申请日：1998-10-09

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： OKUNO TOSHIAKI ,  ISHIKAWA SHINJI

IPC: H04B10/00 ,  G02B6/34 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/2543 ,  H04B10/294 ,  H04B10/18

Abstract: The present invention relates to a dispersion-compensating module functioning to compensate for the chromatic deviations occurring in an optical transmission line and comprising a structure adapted to be easily inserted in an optical transmission system. The dispersion-compensating module according to the present invention comprises an input end and an output end for light signals, and also comprises dispersion-compensating means such as a dispersion-compensating optical fiber or the like, and loss-equalizing means for compensating for at least the wavelength-dependent loss deviations of the dispersion-compensating means.

公开(公告)号：DE69430228T2

公开(公告)日：2002-10-24

申请号：DE69430228

申请日：1994-07-28

Applicant: SUMITOMO ELECTRIC INDUSTRIES

Inventor： YUI DAI ,  ISHIKAWA SHINJI ,  SUGANUMA HIROSHI ,  SEMURA SHIGERU

IPC: G02B6/12 ,  G02B6/122 ,  G02B6/30 ,  G02B6/24 ,  G02B6/38

Abstract: The present invention provides an optical waveguide module in which, under the high temperature and high humidity, degradation of characteristics does not occur and which has strength against oscillation, a simple structure, and high reliability. The module unit (30) is formed by bonding a connector (32) provided at one end of a single-optical fiber cable (22) and a connector (31) provided at one end of a ribbon optical fiber cable (21) at both ends of a waveguide substrate (35) having a 1x4 branch optical waveguide by an adhesive having light transmission properties. The module unit (30) is provided in a housing (10). Liquid resin is poured into the housing and at least a connecting portion between the optical waveguide and the optical fiber cable is covered with resin contained in the housing (10). The housing (10) is sealed with a cover unit, and the single-optical fiber cable (22) and the ribbon optical fiber cable (21) are tightly inserted into a respective hole at end walls of the housing (10) and led out to the outside.