PRODUCTION METHOD OF OPTICAL FIBER PREFORM

Title:

PRODUCTION METHOD OF OPTICAL FIBER PREFORM

Document Type and Number:

Japanese Patent JP2022058214

Kind Code:

A

Abstract:

To provide a production method of an optical fiber preform capable of improving quality by avoiding generation of foreign materials in the interface between a core material and an outside layer in an optical fiber preform product having the core material made of an optical fiber preform processed by a glass lathe.SOLUTION: A production method of an optical fiber preform 3 includes a step for holding at least one end of an optical fiber preform 3 by a holding unit 7 and a step for processing the optical fiber preform 3 by heating and rotating the optical fiber preform 3. The optical fiber preform 3 is held by the holding unit 7 via a buffer material 8 belonging to the holding unit 7. The buffer material 8 has a member 9 on the side touching the optical fiber preform 3 and another member 10 on the side touching the holding unit 7. The member 9 on the side touching the optical fiber preform 3 has a different composition from the composition of the member 10 on the side touching the holding unit 7 and does not contain any of Ca, Mg, Al, K, Na, Mg, and Ba.SELECTED DRAWING: Figure 3

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Inventors:

MITA REI

Application Number:

JP2021152437A

Publication Date:

April 11, 2022

Filing Date:

September 17, 2021

Export Citation:

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Assignee:

SHINETSU CHEMICAL CO

International Classes:

C03B37/012

Domestic Patent References:

JP2000239037A	2000-09-05
JP2013536153A	2013-09-19
JP2010126780A	2010-06-10
JP2004169110A	2004-06-17
JP2005272226A	2005-10-06
JP2005263577A	2005-09-29
JP2015140267A	2015-08-03
JP2014111513A	2014-06-19
JP2004026557A	2004-01-29
JP2005015278A	2005-01-20

Foreign References:

WO2011030716A1	2011-03-17
WO2015046256A1	2015-04-02
WO2005090250A1	2005-09-29
US20050072193A1	2005-04-07

Attorney, Agent or Firm:

Longhua International Patent Service Corporation

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