JPS55162440A - Manufacture of optical fiber base material - Google Patents

Manufacture of optical fiber base material

Info

Publication number
JPS55162440A
JPS55162440A JP6857679A JP6857679A JPS55162440A JP S55162440 A JPS55162440 A JP S55162440A JP 6857679 A JP6857679 A JP 6857679A JP 6857679 A JP6857679 A JP 6857679A JP S55162440 A JPS55162440 A JP S55162440A
Authority
JP
Japan
Prior art keywords
refractive index
layer
sio2
tube
glass layer
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
JP6857679A
Other languages
Japanese (ja)
Inventor
Tetsuo Miya
Shintaro Izutsui
Toshiaki Kuroba
Yasuro Furui
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.)
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Furukawa Electric Co Ltd
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 Furukawa Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Furukawa Electric Co Ltd
Priority to JP6857679A priority Critical patent/JPS55162440A/en
Publication of JPS55162440A publication Critical patent/JPS55162440A/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]
    • C03B37/018—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
    • C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners

Abstract

PURPOSE:To manufacture an optical fiber base material with superior characteristics by forming a clad glass layer lower than an SiO2 type glass tube in refractive index with SiO2 type oxide on the inside of the tube contg. a dopant higher than SiO2 in refractive index and forming a core glass layer higher than the clad glass layer in refractive index with SiO2 type oxide on the inside of the clad glass layer. CONSTITUTION:On the inside of SiO2 type glass tube 1 contg. a dopant such as GeO2 or P2O5 higher than SiO2 in refractive index, clad glass layer 2 which becomes lower than tube 1 in refractive index in the vitrified state is formed. Layer 2 is made of B2O3-free SiO2 type oxide contg. P2O5, GeO2 or the like as a dopant. On the inside of layer 2 core glass layer 3 which becomes higher than layer 2 in refractive index in the vitrified state is formed. Layer 3 is made of SiO2 type oxide contg. P2O5, GeO2 or the like as a dopant. The hollow portion remaining in tube 1 is then eliminated by collapsing to obtain optical fiber base material 4. Material 4 enables correct measurement of transmission loss and has characteristics such as a lowering in heat treatment temp. in manufacture.
JP6857679A 1979-06-01 1979-06-01 Manufacture of optical fiber base material Pending JPS55162440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6857679A JPS55162440A (en) 1979-06-01 1979-06-01 Manufacture of optical fiber base material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6857679A JPS55162440A (en) 1979-06-01 1979-06-01 Manufacture of optical fiber base material

Publications (1)

Publication Number Publication Date
JPS55162440A true JPS55162440A (en) 1980-12-17

Family

ID=13377732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6857679A Pending JPS55162440A (en) 1979-06-01 1979-06-01 Manufacture of optical fiber base material

Country Status (1)

Country Link
JP (1) JPS55162440A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999067178A1 (en) * 1998-06-25 1999-12-29 Samsung Electronics Co., Ltd. Optical fiber preform having oh barrier and manufacturing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999067178A1 (en) * 1998-06-25 1999-12-29 Samsung Electronics Co., Ltd. Optical fiber preform having oh barrier and manufacturing method thereof

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