Everpro Technologies Comp Any Limited

Yangtze Optical Fibre and Cable Joint Stock Limited Company

Mingfeng Fan

Song Wang

Jin Xu

Shuqiang Zhang

Wei Wang

Yongtao Liu

Zhipan Zhou

Jie Luo

Beibei Cao

A graded refractive index bending-resistant multimode optical fiber includes a core layer and claddings. The core layer has a radius in a range of 20-50 &#x3bc;m; refractive indexes being a graded refractive index distribution with a distribution exponent &#x3b1; in a range of 1.89-1.97; and a maximum relative refractive index difference (RRID) &#x394;1% max in a range of 0.9%-2.72%. The claddings has an inner cladding surrounding the core layer, an intermediate cladding surrounding the inner cladding and an outer cladding surrounding the inner cladding. The inner cladding has a radius in a range of 22-57 &#x3bc;m, and an RRID &#x394;2% in a range of &#x2212;0.02%-0.02%. The intermediate cladding is a pure quartz glass layer, and has a radius in a range of 32-60 &#x3bc;m, and an RRID &#x394;3% in a range of &#x2212;0.01%-0.01%.

Graded refractive index bending-resistant multimode optical fiber

A graded refractive index bending-resistant multimode optical fiber includes a core layer and claddings. The core layer has a radius in a range of 22.5-27.5 &#x3bc;m; refractive indexes being a gradient-graded refractive index distribution with a distribution exponent &#x3b1; in a range of 1.99-2.06; and a maximum relative refractive index difference (RRID) &#x394;1% max in a range of 0.9%-1.3%. The claddings has an inner cladding surrounding the core layer, an intermediate cladding surrounding the inner cladding and an outer cladding surrounding the inner cladding. The inner cladding has a radius in a range of 25.5-34.5 &#x3bc;m, and an RRID &#x394;2% in a range of &#x2212;0.02%-0.02%. The intermediate cladding is a pure quartz glass layer, and has a radius in a range of 30.5-49.5 &#x3bc;m, and an RRID &#x394;3% in a range of &#x2212;0.01%-0.01%. The outer cladding has a radius in a range of 61.5-63.5 &#x3bc;m, and an RRID &#x394;4% is in a range of &#x2212;0.20%-0.30%.

Graded refractive index bending-resistant multimode obtical fiber

A dispersion compensation fiber comprises a fiber core and cladding. The fiber core is a core layer mainly doped with germanium and having a positive relative refractive index difference. The cladding covering the fiber core comprises a trench cladding mainly doped with fluorine, an annular cladding mainly doped with germanium, a matching cladding mainly doped with fluorine, and an outermost mechanical cladding in order. Relative refractive index differences of the fiber core and the claddings are respectively: &#x394;1% being 1.55% to 2.20%, &#x394;2% being &#x2212;0.55% to &#x2212;0.30%, &#x394;3% being 0.40% to 0.65%, &#x394;4% being &#x2212;0.20% to &#x2212;0.01%, and &#x394;5% being 0. Radius ranges, from R1 to R5, of the fiber core and the claddings are respectively: R1 being 1.4 to 1.7 &#x3bc;m, R2 being 4.1 to 4.8 &#x3bc;m, R3 being 6.7 to 8.8 &#x3bc;m, R4 being 10 to 17 &#x3bc;m, and R5 being 38 to 63 &#x3bc;m.

Dispersion compensation fiber

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Hubei, China

Mingfeng Fan