JPS6476929A - Production of optical fiber preserving plane of polarization - Google Patents

Production of optical fiber preserving plane of polarization

Info

Publication number
JPS6476929A
JPS6476929A JP62232650A JP23265087A JPS6476929A JP S6476929 A JPS6476929 A JP S6476929A JP 62232650 A JP62232650 A JP 62232650A JP 23265087 A JP23265087 A JP 23265087A JP S6476929 A JPS6476929 A JP S6476929A
Authority
JP
Japan
Prior art keywords
layer
soot
polarization
rod
optical fiber
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.)
Pending
Application number
JP62232650A
Other languages
Japanese (ja)
Inventor
Toshihide Tokunaga
Tatsuo Teraoka
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 Cable Ltd
Original Assignee
Hitachi Cable 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 Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP62232650A priority Critical patent/JPS6476929A/en
Publication of JPS6476929A publication Critical patent/JPS6476929A/en
Pending 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]
    • C03B37/01413—Reactant delivery systems
    • C03B37/0142—Reactant deposition burners
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/105—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type having optical polarisation effects
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/04—Multi-nested ports
    • C03B2207/06—Concentric circular ports
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/20—Specific substances in specified ports, e.g. all gas flows specified
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/20—Specific substances in specified ports, e.g. all gas flows specified
    • C03B2207/22—Inert gas details
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/40—Mechanical flame shields
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/50—Multiple burner arrangements
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00—Glass deposition burners
    • C03B2207/70—Control measures

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To obtain the title parent material useful in continuous optical fibers for communication, having low optical loss and excellent maintenance of polarization, by forming a specific soot around the core rod by controlling the feed rates of starting gases. CONSTITUTION:A clad core rod of about 10phi is rotated at a rate of about 10rpm. A 4-layer structure burner 4 for forming the first clad is used to feed SiCl4 together with Ar carrier through the first layer, H2 through the second layer, Ar through the third layer, and O2 through the fourth layer around the rod 1 to effect flame hydrolysis and form soot 2. Then, the gas feed rates are controlled, while the rod rotates 1 round, so that the bulk density distributes in an elliptic form in the peripheral direction. Then, glass starting gases different from the buffer 4 are fed from the burner 5 to deposits soot 3 on the soot 2 to obtain soots 2, 3 of about 80phi. Then the soots 2, 3 are dehydroxylated and glassified to give a parent material of an elliptic cross section for an optical fiber for polarized beams.
JP62232650A 1987-09-18 1987-09-18 Production of optical fiber preserving plane of polarization Pending JPS6476929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62232650A JPS6476929A (en) 1987-09-18 1987-09-18 Production of optical fiber preserving plane of polarization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62232650A JPS6476929A (en) 1987-09-18 1987-09-18 Production of optical fiber preserving plane of polarization

Publications (1)

Publication Number Publication Date
JPS6476929A true JPS6476929A (en) 1989-03-23

Family

ID=16942620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62232650A Pending JPS6476929A (en) 1987-09-18 1987-09-18 Production of optical fiber preserving plane of polarization

Country Status (1)

Country Link
JP (1) JPS6476929A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604785A1 (en) * 1992-12-28 1994-07-06 Corning Incorporated Method of making optical waveguide preforms

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849632A (en) * 1981-09-18 1983-03-23 Nec Corp Manufacturing of optical fiber capable of conserving plane of polarization
JPS59141437A (en) * 1983-02-03 1984-08-14 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fiber preform

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849632A (en) * 1981-09-18 1983-03-23 Nec Corp Manufacturing of optical fiber capable of conserving plane of polarization
JPS59141437A (en) * 1983-02-03 1984-08-14 Nippon Telegr & Teleph Corp <Ntt> Manufacture of optical fiber preform

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604785A1 (en) * 1992-12-28 1994-07-06 Corning Incorporated Method of making optical waveguide preforms

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