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AssigneeYangtze Optical Fibre and Cable Joint Stock Limited Company
InventorsChangkun YAN, Wufeng XIAO, Runhan WANG, Tiejun WANG, Beibei CAO, Ming CHENG
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A low-dispersion single-mode fiber includes a core and claddings covering the core. The core layer has a radius in a range of 3-5 μm and a relative refractive index difference in a range of 0.15% to 0.45%. The claddings comprise a first depressed cladding, a raised cladding, a second depressed cladding, and an outer cladding arranged sequentially from inside to outside. The first depressed cladding has a unilateral width in a range of 2-7 μm and a relative refractive index difference in a range of −0.4% to 0.03%. The raised cladding has a unilateral width in a range of 2-7 μm and a relative refractive index difference in a range of 0.05% to 0.20%. The second depressed cladding has a unilateral width in a range of 0-8 μm and a relative refractive index difference in a range of 0% to −0.2%. The outer cladding is formed of pure silicon dioxide glass.
A low-dispersion single-mode fiber, comprising a core layer and claddings, wherein the core layer has a radius R1 in a range from 3 μm to 5 μm and a relative refractive index difference Δ1 in a range from 0.15% to 0.45%, and the claddings comprise a first depressed cladding, a raised cladding, a second depressed cladding, and an outer cladding from inside to outside, wherein the first depressed cladding has a unilateral width (R2-R1) in a range from 2 μm to 7 μm and a relative refractive index difference Δ2 in a range from −0.4% to 0.03%;
Dependencies are inferred from the claim text.