Invention Application
- Patent Title: METHOD OF PRODUCING OPTICAL FIBER PREFORM AND OPTICAL FIBER
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Application No.: US15417732Application Date: 2017-01-27
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Publication No.: US20170137316A1Publication Date: 2017-05-18
- Inventor: Keiichi AISO , Tomohiro GONDA
- Applicant: FURUKAWA ELECTRIC CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: FURUKAWA ELECTRIC CO., LTD.
- Current Assignee: FURUKAWA ELECTRIC CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2014-160740 20140806
- Main IPC: C03B37/014
- IPC: C03B37/014 ; C03B37/025 ; C03B37/018

Abstract:
A method of producing an optical fiber preform includes: an alkali-metal-doped silica glass body forming step of forming an alkali-metal-doped silica glass body doped with an alkali metal; a silica glass body forming step of forming a silica glass body to be at least a portion of a core portion around the alkali-metal-doped silica glass body such that the silica glass body contacts the alkali-metal-doped silica glass body; and a diffusing step of diffusing the alkali metal from the alkali-metal-doped silica glass body to the silica glass body by a heat treatment.
Public/Granted literature
- US10676387B2 Method of producing optical fiber preform and optical fiber Public/Granted day:2020-06-09
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