JPH0577618B2 - - Google Patents

Info

Publication number
JPH0577618B2
JPH0577618B2 JP9028553A JP2855390A JPH0577618B2 JP H0577618 B2 JPH0577618 B2 JP H0577618B2 JP 9028553 A JP9028553 A JP 9028553A JP 2855390 A JP2855390 A JP 2855390A JP H0577618 B2 JPH0577618 B2 JP H0577618B2
Authority
JP
Japan
Prior art keywords
layer
ellipticity
glass
core
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP9028553A
Other languages
English (en)
Japanese (ja)
Other versions
JPH02239129A (ja
Inventor
Hiroyoshi Matsumura
Toshio Katsuyama
Yasuo Suganuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP56112137A external-priority patent/JPS5815041A/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2855390A priority Critical patent/JPH02239129A/ja
Publication of JPH02239129A publication Critical patent/JPH02239129A/ja
Publication of JPH0577618B2 publication Critical patent/JPH0577618B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture, Treatment Of Glass Fibers (AREA)
JP2855390A 1981-07-20 1990-02-09 光ファイバ母材の製造方法 Granted JPH02239129A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2855390A JPH02239129A (ja) 1981-07-20 1990-02-09 光ファイバ母材の製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP56112137A JPS5815041A (ja) 1981-07-20 1981-07-20 光ファイバの製造方法
JP2855390A JPH02239129A (ja) 1981-07-20 1990-02-09 光ファイバ母材の製造方法

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP56112137A Division JPS5815041A (ja) 1981-05-29 1981-07-20 光ファイバの製造方法

Publications (2)

Publication Number Publication Date
JPH02239129A JPH02239129A (ja) 1990-09-21
JPH0577618B2 true JPH0577618B2 (en, 2012) 1993-10-27

Family

ID=26366681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2855390A Granted JPH02239129A (ja) 1981-07-20 1990-02-09 光ファイバ母材の製造方法

Country Status (1)

Country Link
JP (1) JPH02239129A (en, 2012)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5669235A (en) * 1979-11-09 1981-06-10 Nippon Telegr & Teleph Corp <Ntt> Preparation of optical fiber
JPS56125233A (en) * 1980-03-07 1981-10-01 Hitachi Ltd Manufacture of optical fiber
JPS5815041A (ja) * 1981-07-20 1983-01-28 Hitachi Ltd 光ファイバの製造方法

Also Published As

Publication number Publication date
JPH02239129A (ja) 1990-09-21

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