公开(公告)号：US20180039019A1

公开(公告)日：2018-02-08

申请号：US15786048

申请日：2017-10-17

Applicant: Yangtze Optical Fibre and Cable Joint Stock Limited Company

Inventor： Lei ZHANG ,  Shengya LONG ,  Jihong ZHU ,  Jun WU ,  Hongyan ZHOU ,  Rui ZHANG ,  Ruichun WANG

IPC: G02B6/036 ,  G02B6/02 ,  G02B6/028

CPC classification number: G02B6/03633 ,  G02B6/02009 ,  G02B6/028 ,  G02B6/036

Abstract: A bending-insensitive single-mode fiber with ultralow attenuation includes a core layer and cladding layers. The cladding layers includes an inner cladding layer surrounding the core layer, a trench cladding layer surrounding the inner cladding layer, an auxiliary outer cladding layer surrounding the trench cladding layer, and an outer cladding layer surrounding the auxiliary cladding layer. The core layer has a radius of 3.0 to 3.9 μm and a relative refractive index of −0.04% to 0.12%. The inner cladding layer has a radius of 8 to 14 μm and a relative refractive index −0.35% to −0.10%. The trench cladding layer has a radius of 14 to 20 μm and a relative refractive index of −0.6% to −0.2%. The auxiliary outer cladding layer has a radius of 35 to 50 μm and a relative refractive index of −0.4% to −0.15%. The outer cladding layer is a pure silica glass layer.

公开(公告)号：US20180039020A1

公开(公告)日：2018-02-08

申请号：US15785923

申请日：2017-10-17

Applicant: YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY

Inventor： Shengya LONG ,  Jihong ZHU ,  Lei ZHANG ,  Jun WU ,  Rui ZHANG ,  Ruichun WANG

IPC: G02B6/036 ,  C03C13/04 ,  G02B6/02

CPC classification number: G02B6/03683 ,  C03C13/046 ,  C03C2213/00 ,  G02B6/02009 ,  G02B6/02266 ,  G02B6/036

Abstract: A single-mode fiber with ultralow attenuation includes a core layer and cladding layers. The cladding layers includes an inner cladding layer surrounding the core layer, a trench cladding layer surrounding the inner cladding layer, an auxiliary outer cladding layer surrounding the trench cladding layer, and an outer cladding layer surrounding the auxiliary cladding layer. The core layer has a radius of 3.9-4.8 μm and a relative refractive index difference of −0.08% to 0.10%. The inner cladding layer has a radius of 9-14 μm and a relative refractive index difference of −0.40% to −0.15%. The trench cladding layer has a radius of 13-25 μm and a refractive index difference of −0.7% to −0.3%. The auxiliary outer cladding layer has a radius of 30-50 μm and a relative refractive index difference of −0.4% to −0.15%. The outer cladding layer is a pure silicon dioxide glass layer.

公开(公告)号：US20220091328A1

公开(公告)日：2022-03-24

申请号：US17420232

申请日：2020-10-20

Applicant: YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY

Inventor： Lei ZHANG ,  Ruichun WANG ,  Rui ZHANG ,  Chao WU ,  Lan DENG ,  Hongyan ZHOU ,  Lei SHEN ,  Jie LUO

IPC: G02B6/02 ,  G02B6/036

Abstract: A low-dispersion single-mode optical fiber includes a core and claddings covering the core. The core has a relative refractive index difference of 0.30-0.65% and a radius of 2.5-4.5 μm. The claddings include first, second, third cladding layers and an outer cladding arranged sequentially from inside to outside. The first cladding layer covers the core, and has a relative refractive index difference of −0.70% to −0.30% and a radius of 4.5-7.5 μm. The second cladding layer covers the first cladding layer, and has a relative refractive index difference of −0.20% to −0.25% and a radius of 7.0-12.0 μm. The third cladding layer covers the second cladding layer, and has a relative refractive index difference of −0.60% to 0.00% and a radius of 10.0-20.0 μm. The outer cladding covers the third cladding layer, and is a layer made of pure silicon dioxide glass.