Yangtze Optical Fibre and Cable Joint Stock Limited Company

Dewu Li

Ruichun Wang

Shengya Long

Runhan Wang

Gaoqing Lei

Rong Huang

Gang Chen

A bend-insensitive multimode optical fiber includes a core layer, and cladding layers surrounding the core layer. The core layer has a parabolic refractive index profile with &#x3b1; being 1.9-2.2, a radius being 23-27 &#x3bc;m, and a maximum relative refractive index difference being between 0.9-1.2%. The inner cladding layer has a width being 1-3 &#x3bc;m and a relative refractive index difference being between &#x2212;0.05% and 0.1%. The trench cladding layer has a width being 2-5 &#x3bc;m and a relative refractive index difference being between &#x2212;1% and &#x2212;0.3%. The core layer is a Ge/F co-doped silica glass layer, where an F doping contribution at a central position of the core layer is less than or equal to 0%, an F doping contribution at an edge portion of the core layer is greater than or equal to &#x2212;0.45%. The outer cladding layer is a pure silica glass layer.

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Hubei, China

Dewu Li