METHOD FOR MANUFACTURING OPTICAL FIBER PREFORM
PROBLEM TO BE SOLVED: To solve the problem that the appearance failure and the degree of eccentricity of a core are large because the surface temperature of a deposited soot or the density of a deposited soot layer is selected improperly in a method for manufacturing an optical fiber preform by reac...
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| creator | MORIHIRA HIDEYA KANAO AKIHIRO HAYAMIZU SHUHEI |
| description | PROBLEM TO BE SOLVED: To solve the problem that the appearance failure and the degree of eccentricity of a core are large because the surface temperature of a deposited soot or the density of a deposited soot layer is selected improperly in a method for manufacturing an optical fiber preform by reacting a raw material gas containing silicon in a flame mainly comprising gaseous oxygen and gaseous hydrogen to form the soot of silicon dioxide and depositing the soot layer comprising the soot on the surface of a glass rod. SOLUTION: The method for manufacturing the optical fiber preform comprises heating the surface of a glass body to 560-620°C, and at the same time, depositing an initial soot layer on the glass rod so that the deposit density of the soot layer of silicon dioxide becomes 0.8-1.5 g/cm3. Thereby, the optical fiber preform almost free from appearance failure can be obtained without making the degree of eccentricity large after drawing. COPYRIGHT: (C)2005,JPO&NCIPI |
| format | Patent |
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SOLUTION: The method for manufacturing the optical fiber preform comprises heating the surface of a glass body to 560-620°C, and at the same time, depositing an initial soot layer on the glass rod so that the deposit density of the soot layer of silicon dioxide becomes 0.8-1.5 g/cm3. Thereby, the optical fiber preform almost free from appearance failure can be obtained without making the degree of eccentricity large after drawing. 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SOLUTION: The method for manufacturing the optical fiber preform comprises heating the surface of a glass body to 560-620°C, and at the same time, depositing an initial soot layer on the glass rod so that the deposit density of the soot layer of silicon dioxide becomes 0.8-1.5 g/cm3. Thereby, the optical fiber preform almost free from appearance failure can be obtained without making the degree of eccentricity large after drawing. 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SOLUTION: The method for manufacturing the optical fiber preform comprises heating the surface of a glass body to 560-620°C, and at the same time, depositing an initial soot layer on the glass rod so that the deposit density of the soot layer of silicon dioxide becomes 0.8-1.5 g/cm3. Thereby, the optical fiber preform almost free from appearance failure can be obtained without making the degree of eccentricity large after drawing. COPYRIGHT: (C)2005,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE |
| title | METHOD FOR MANUFACTURING OPTICAL FIBER PREFORM |
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