JPS5494048A - Production of rod for optical fiber - Google Patents

Production of rod for optical fiber

Info

Publication number
JPS5494048A
JPS5494048A JP28178A JP28178A JPS5494048A JP S5494048 A JPS5494048 A JP S5494048A JP 28178 A JP28178 A JP 28178A JP 28178 A JP28178 A JP 28178A JP S5494048 A JPS5494048 A JP S5494048A
Authority
JP
Japan
Prior art keywords
quartz tube
uniform
maximums
gases
refractive index
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
JP28178A
Other languages
Japanese (ja)
Other versions
JPS581054B2 (en
Inventor
Hiroshi Yokota
Minoru Watanabe
Masaaki Yoshida
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP53000281A priority Critical patent/JPS581054B2/en
Publication of JPS5494048A publication Critical patent/JPS5494048A/en
Publication of JPS581054B2 publication Critical patent/JPS581054B2/en
Expired 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
    • C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
    • C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
    • C03B37/01257—Heating devices therefor
    • 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
    • C03B37/01861—Means for changing or stabilising the diameter or form of tubes or rods
    • C03B37/01869—Collapsing

Landscapes

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

Abstract

PURPOSE:To eliminate the thermal deformation of a quartz tube thereby to produce a material rod having a uniform diameter and a uniform refractive index distribution by holding the quartz tube such that its axial temperature distribution has at least two maximums. CONSTITUTION:An oxyhydrogen burner having two nozzle holes are supplied at its inner hole 1 with oxygen gases and at its outer hole 2 with hydrogen gases. If the burner is moved while being heated along a quartz tube, a portion of the oxygen gases coming from the inner hole 1 is blown directly onto the quartz tube, without being mixed with the hydrogen gases, so that it acts as a cooling gas. Thus, the temperature distribution having two maximums such as 1300 deg.C can be stably established with the use of the single heating source. Thus, it is possible to produce a material rod which has a uniform core diameter and a uniform refractive index distribution.
JP53000281A 1978-01-06 1978-01-06 Manufacturing method for optical fiber material rod Expired JPS581054B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53000281A JPS581054B2 (en) 1978-01-06 1978-01-06 Manufacturing method for optical fiber material rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53000281A JPS581054B2 (en) 1978-01-06 1978-01-06 Manufacturing method for optical fiber material rod

Publications (2)

Publication Number Publication Date
JPS5494048A true JPS5494048A (en) 1979-07-25
JPS581054B2 JPS581054B2 (en) 1983-01-10

Family

ID=11469511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53000281A Expired JPS581054B2 (en) 1978-01-06 1978-01-06 Manufacturing method for optical fiber material rod

Country Status (1)

Country Link
JP (1) JPS581054B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246348U (en) * 1975-09-30 1977-04-01

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5246348U (en) * 1975-09-30 1977-04-01

Also Published As

Publication number Publication date
JPS581054B2 (en) 1983-01-10

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