OPTICAL FIBER WITH INVERSE TRIANGULAR TRENCH DESIGN

    公开(公告)号:US20230266525A1

    公开(公告)日:2023-08-24

    申请号:US18137808

    申请日:2023-04-21

    IPC分类号: G02B6/028 G02B6/02 G02B6/036

    摘要: A single mode optical fiber is provided that includes a core region having an outer radius r1 and a maximum relative refractive index Δ1max. The single mode optical fiber further includes a cladding region surrounding the core region, the cladding region includes a depressed-index cladding region, a relative refractive index Δ3 of the depressed-index cladding region increasing with increased radial position. The single mode optical fiber has a bend loss at 1550 nm for a 15 mm diameter mandrel of less than about 0.75 dB/turn, a bend loss at 1550 nm for a 20 mm diameter mandrel of less than about 0.2 dB/turn, and a bend loss at 1550 nm for a 30 mm diameter mandrel of less than 0.005 dB/turn. Additionally, the single mode optical fiber has a mode field diameter of 9.0 microns or greater at 1310 nm wavelength.

    METHOD FOR MANUFACTURING LOW LOSS OPTICAL FIBERS

    公开(公告)号:US20230168428A1

    公开(公告)日:2023-06-01

    申请号:US17989988

    申请日:2022-11-18

    IPC分类号: G02B6/02 G02B6/028 C03B37/012

    摘要: An optical fiber includes a core region of silica glass doped with an alkali metal oxide. A depressed-index cladding region surrounds the core region and comprises silica glass doped with a first concentration of fluorine. The depressed-index cladding region has a minimum relative refractive index Δ3min in a range from −0.80% to −0.30%. An outer cladding region comprises silica glass doped with a second, lesser concentration. The outer cladding region has a relative refractive index Δ4, where Δ4−Δ3min>0.05%. The optical fiber has a time-to-peak hydrogen aging value at 23° C. of less than 100 hours upon exposure to an atmosphere having a total pressure of 1 atm and containing a partial pressure of 0.01 atm H2 and a partial pressure of 0.99 atm N2. The optical fiber exhibits an attenuation

    LOW DIAMETER OPTICAL FIBER
    9.
    发明申请
    LOW DIAMETER OPTICAL FIBER 审中-公开
    低直径光纤

    公开(公告)号:US20160216442A1

    公开(公告)日:2016-07-28

    申请号:US14706302

    申请日:2015-05-07

    IPC分类号: G02B6/02 G02B6/028 G02B6/036

    摘要: Small-radius coated optical fibers having large mode field diameter and low bending losses. The coated fiber may have an outer radius of 110 μm or less, while providing a mode field diameter of 9.0 μm or greater and a bending loss when wrapped about a 15 mm mandrel of 0.5 dB/km or less at wavelength of 1550 nm. The coated fiber may have a mode field diameter of 9.2 μm or greater and may have a bending loss at 1550 nm of 0.25 dB/km or less when wrapped about a 20 mm mandrel or a bending loss at 1550 nm of 0.02 dB/km or less when wrapped about a 30 mm mandrel.

    摘要翻译: 具有大模场直径和低弯曲损耗的小半径涂覆光纤。 涂覆的光纤可以具有110μm或更小的外半径,同时提供9.0μm或更大的模场直径和在1550nm波长下缠绕在0.5dB / km或更小的15mm心轴周围时的弯曲损耗。 涂覆的光纤可以具有9.2μm或更大的模场直径,并且当缠绕在20mm心轴上时在1550nm处的弯曲损耗为0.25dB / km或更小,或者在1550nm处的弯曲损耗为0.02dB / km或 当缠绕在30毫米心轴上时较少。