METHOD FOR PRODUCING MULTI-CORE OPTICAL FIBER
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Jan 18, 2018
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Jun 27, 2017
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Jul 14, 2016
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Provided is a method for producing a multi-core optical fiber that includes a plurality of cores made of pure silica glass and exhibits a minor transmission loss. The method for producing a multi-core optical fiber according to the present invention is a method for producing a multi-core optical fiber including a plurality of cores made of pure silica glass substantially free of Ge and a cladding surrounding the plurality of cores and made of a fluorine-containing silica glass. The multi-core optical fiber is produced by drawing an optical fiber preform at a drawing tension T satisfying the relationship 0.06 g/μm2
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