Multi-core fiber and method of positioning of core of multi-core fiber

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9335467
APP PUB NO 20140199039A1
SERIAL NO

14238698

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Abstract

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A multi-core fiber for accommodating multiple single mode cores in one optical fiber is provided with multiple types of non-identical cores having different propagation constants. Each of the multiple types of non-identical cores includes a core part and a cladding part covering an outer periphery of the core part. The cladding part has a double cladding structure including a first cladding for surrounding an outer periphery of the core part and a second cladding on the outer side of the first cladding. In the multiple types of non-identical cores, an optical electromagnetic profile in the core part and the first cladding is confined within a range of the core part and the first cladding, restricting a leakage thereof to the second cladding, and the propagation constant of each non-identical core is made different using the refractive index of the first cladding as a parameter.

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Patent Owner(s)

  • NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kokubun, Yasuo Yokohama, JP 8 264
Watanabe, Tatsuhiko Yokohama, JP 3 31

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