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公开(公告)号：DE69113403D1
公开(公告)日：1995-11-02
申请号：DE69113403
申请日：1991-11-28
Applicant: SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE
Inventor： HOSHINO SUMIO , ITO MASUMI , SHIGAMATSU MASAYUKI , KANAMORI HIROO , IZUMITA HISASHI
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公开(公告)号：AU649774B2
公开(公告)日：1994-06-02
申请号：AU1074892
申请日：1992-02-05
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： DANZUKA TOSHIO , ITO MASUMI , SAITO TATSUHIKO , TSUCHIYA ICHIRO
IPC: C03B37/012 , C03B37/014 , G02B6/00 , C03B37/018
Abstract: A glass preform for use in the fabrication of an optical fiber having a reduced transmission loss is produced by synthesizing a soot preform by a vapor synthesis method and consolidating the soot preform in an electric furnace to obtain a glass preform, wherein an intermediate body consisting of a core portion and an inner part of a cladding portion is consolidated under atmospheric pressure and an outer part of the cladding portion which surrounds a periphery of the intermediated body is consolidated under reduced pressure or in vacuo.
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公开(公告)号：AU649519B2
公开(公告)日：1994-05-26
申请号：AU1118992
申请日：1992-02-25
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： ITO MASUMI , KANAMORI HIROO , DANZUKA TOSHIO , YOKOTA HIROSHI
IPC: C03B37/012 , C03B37/014 , G02B6/00
Abstract: A glass preform for use in the fabrication of an optical fiber having a low transmission loss is produced by inserting a glass rod as a core material in a glass tube as a cladding material having a lower refractive index than that of the core material, and heating the so formed composite of the glass rod and the glass tube from the outside after filling a mixed gas containing a halogen-containing gas and oxygen gas in a space between the glass rod and the glass tube to fuse them together to produce the glass preform. Formation of bubbles in the glass preform is thereby suppressed.
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公开(公告)号：AU646490B2
公开(公告)日：1994-02-24
申请号：AU8353991
申请日：1991-09-03
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： DANZUKA TOSHIO , ITO MASUMI , TAKAGI MASAHIRO , YOKOTA HIROSHI
IPC: G02B6/00 , C03B8/04 , C03B37/014 , C03B37/018
Abstract: A glass article is produced at a high production rate and a high yield by jetting a glass-forming raw material from a multi-port burner, synthesizing glass soot through hydrolysis of the glass-forming raw material, depositing the glass soot to form a soot preform and heating and vitrifying the soot preform to produce a transparent glass article, wherein the glass-forming raw material is vaporized by heating it at a temperature higher than its boiling point and directly supplied to the burner, the vaporized glass-forming raw material and a fuel gas for synthesizing glass soot are supplied to an inner port of the multi-port burner and a fuel gas for heating a formed preform is supplied to an outer port of the multi-port burner, and a molar ratio of water generated by a reaction of the fuel gas for synthesizing glass soot to the glass-forming raw material is from 2 to 3.
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公开(公告)号：CA2099942A1
公开(公告)日：1994-01-10
申请号：CA2099942
申请日：1993-07-06
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： HOSHINO SUMIO , DANZUKA TOSHIO , OHGA YUICHI , ITO MASUMI , MUKAI KATSUZO
IPC: C03B37/027 , C03B20/00 , C03B37/012 , C03B37/014 , C03B37/018 , G02B6/00 , C03B37/023
Abstract: A glass preform for an optical fiber is effectively drawn by connecting dummy rods to both ends of the glass preform and connecting the dummy rods to fitting members.
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Patent Agency Ranking
公开(公告)号：ZA921271B
公开(公告)日：1993-04-28
申请号：ZA921271
申请日：1992-02-21
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： ITO MASUMI , MASUMI ITO , KANAMORI HIROO , HIROO KANAMORI , DANZUKA TOSHIO , TOSHIO DANZUKA , YOKOTA HIROSHI , HIROSHI YOKOTA
IPC: C03B37/012 , C03B37/014 , G02B6/00 , C03B
Abstract: A glass preform for use in the fabrication of an optical fiber having a low transmission loss is produced by inserting a glass rod as a core material in a glass tube as a cladding material having a lower refractive index than that of the core material, and heating the so formed composite of the glass rod and the glass tube from the outside after filling a mixed gas containing a halogen-containing gas and oxygen gas in a space between the glass rod and the glass tube to fuse them together to produce the glass preform. Formation of bubbles in the glass preform is thereby suppressed.
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公开(公告)号：ZA921158B
公开(公告)日：1992-11-25
申请号：ZA921158
申请日：1992-02-18
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： ITO MASUMI , MASUMI ITO , HOSHINO SUMIO , SUMIO HOSHINO , KANAMORI HIROO , HIROO KANAMORI
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公开(公告)号：ZA9201158B
公开(公告)日：1992-11-25
申请号：ZA9201158
申请日：1992-02-18
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： ITO MASUMI , MASUMI ITO , HOSHINO SUMIO , SUMIO HOSHINO , KANAMORI HIROO , HIROO KANAMORI
CPC classification number: G02F1/3132 , G02F1/3555 , G02F2202/021 , G02F2202/07
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公开(公告)号：NO920724A
公开(公告)日：1992-08-26
申请号：NO920724
申请日：1992-02-24
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： ITO MASUMI , KANAMORI HIROO , DANZUKA TOSHIO , YOKOTA HIROSHI
IPC: C03B37/012 , C03B37/014 , G02B6/00 , C03C17/02
CPC classification number: C03B37/01248 , C03B37/01211 , C03B37/01257 , C03B2201/31 , C03B2201/42
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公开(公告)号：FI920784A
公开(公告)日：1992-08-26
申请号：FI920784
申请日：1992-02-24
Applicant: SUMITOMO ELECTRIC INDUSTRIES
Inventor： ITO MASUMI , KANAMORI HIROO , DANZUKA TOSHIO , YOKOTA HIROSHI
IPC: C03B37/012 , C03B37/014 , G02B6/00
Abstract: A glass preform for use in the fabrication of an optical fiber having a low transmission loss is produced by inserting a glass rod as a core material in a glass tube as a cladding material having a lower refractive index than that of the core material, and heating the so formed composite of the glass rod and the glass tube from the outside after filling a mixed gas containing a halogen-containing gas and oxygen gas in a space between the glass rod and the glass tube to fuse them together to produce the glass preform. Formation of bubbles in the glass preform is thereby suppressed.
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