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JPS5614439A - Manufacture of optical fiber base material - Google Patents

Manufacture of optical fiber base material

Info

Publication number
JPS5614439A
JPS5614439A JP9056679A JP9056679A JPS5614439A JP S5614439 A JPS5614439 A JP S5614439A JP 9056679 A JP9056679 A JP 9056679A JP 9056679 A JP9056679 A JP 9056679A JP S5614439 A JPS5614439 A JP S5614439A
Authority
JP
Japan
Prior art keywords
clad layer
temp
sicl4
vitrification
deposited
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.)
Granted
Application number
JP9056679A
Other languages
Japanese (ja)
Other versions
JPS5723654B2 (en
Inventor
Yukio Terunuma
Tetsuo Miya
Toshito Hosaka
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9056679A priority Critical patent/JPS5614439A/en
Publication of JPS5614439A publication Critical patent/JPS5614439A/en
Publication of JPS5723654B2 publication Critical patent/JPS5723654B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01853—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To control a transmission loss and an absorption loss due to OH group by carrying out vitrification at a lower temp. at first when a clad layer is deposited and vitrifying a layer part close to a core at a higher temp. to change the vitrifying temp. in the through thickness direction of the deposited clad layer. CONSTITUTION:When a clad layer is formed, vitrification is carried out at 1,500- 1,550 deg.C in the first half and at 1,600-1,650 deg.C in the latter half. For example, oxygen gas is fed from starting material feed section 1 to preburn quartz pipe 3 with oxyhydrogen burner 5. SiCl4 of a fixed temp. is bubbled with carrier gas oxygen, introduced into rotating pipe 3 together with oxygen gas, heated and scanned with moving burner 5, and vitrified after vapor phase reaction of SiCl4 to deposite a clad layer. The vitrification is carried out at 1,500-1,550 deg.C in the first half and at 1,600-1,650 deg.C in the latter half. SiCl4 and GeCl4 are then introduced into pipe 5 after adjusting carrier gas so as to attain a desired refractive index, and a core is deposited on the inside of the clad layer. Finally, they are made solid to obtain an optical fiber base material.
JP9056679A 1979-07-17 1979-07-17 Manufacture of optical fiber base material Granted JPS5614439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9056679A JPS5614439A (en) 1979-07-17 1979-07-17 Manufacture of optical fiber base material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9056679A JPS5614439A (en) 1979-07-17 1979-07-17 Manufacture of optical fiber base material

Publications (2)

Publication Number Publication Date
JPS5614439A true JPS5614439A (en) 1981-02-12
JPS5723654B2 JPS5723654B2 (en) 1982-05-19

Family

ID=14001973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9056679A Granted JPS5614439A (en) 1979-07-17 1979-07-17 Manufacture of optical fiber base material

Country Status (1)

Country Link
JP (1) JPS5614439A (en)

Also Published As

Publication number Publication date
JPS5723654B2 (en) 1982-05-19

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