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    LOW BEND LOSS OPTICAL FIBER WITH A GERMANIA DOPED CORE
    172.
    发明申请
    LOW BEND LOSS OPTICAL FIBER WITH A GERMANIA DOPED CORE 审中-公开

    公开(公告)号：US20180321438A1

    公开(公告)日：2018-11-08

    申请号：US15957414

    申请日：2018-04-19

    Applicant: Corning Incorporated

    Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

    IPC: G02B6/02 ,  G02B6/028

    CPC classification number: G02B6/02266 ,  G02B6/0281 ,  G02B6/0286 ,  G02B6/03633 ,  G02B6/03644

    Abstract: A single mode optical fiber including a germania doped silica central core region having outer radius r1 and refractive index Δ1, a maximum refractive index Δ1max, and 0.32%≤Δ1max≤0.45%, and a core alpha profile (Coreα). In various embodiments, the optical fiber also contains a cladding region including: (i) a second inner cladding region or ring region surrounding the first inner cladding region; or (ii) an inner cladding region or pedestal region surrounding the germania doped silica central core region. The corresponding resultant optical fibers exhibit a 22 m cable cutoff less than or equal to 1260 nm, a macrobending loss at 1550 nm of ≤0.75 dB/turn on a 20 mm diameter mandrel, a zero dispersion wavelength, λ0, of 1300 nm≤λ0≤1324 nm, and a mode field diameter at 1310 nm of 8.2 microns≤MDF1310nm≤9.6 microns.

    Low bend loss optical fiber
    174.
    发明授权
    Low bend loss optical fiber 有权

    公开(公告)号：US10082622B2

    公开(公告)日：2018-09-25

    申请号：US15812560

    申请日：2017-11-14

    Applicant: Corning Incorporated

    Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

    IPC: G02B6/036 ,  G02B6/02

    CPC classification number: G02B6/03672 ,  G02B6/02009 ,  G02B6/02014 ,  G02B6/02395 ,  G02B6/0365

    Abstract: Disclosed herein are optical waveguide fibers comprising: (I) a core comprising an outer radius r1, a maximum refractive index delta percent Δ1max and core alpha, α, of larger than 5; and (II) a cladding surrounding the core, the cladding comprising: (i) an inner cladding region having outer radius r2 and refractive index delta percent Δ2, wherein Δ1max>Δ2; (ii) a trench region surrounding the inner cladding region, the trench region having an outer radius, r3 where r3≥10 microns and refractive index delta percent Δ3; and (iii) an outer cladding region having chlorine concentration of ≥1.2 wt. % surrounding the trench region and comprising refractive index delta percent Δ4, wherein Δ1max>Δ4 and Δ2>Δ3, and Δ4>Δ3 and wherein the difference between Δ4 and Δ3 is ≥0.12 percent.

    LOW-LOSS AND LOW-BEND-LOSS OPTICAL FIBER
    175.
    发明申请
    LOW-LOSS AND LOW-BEND-LOSS OPTICAL FIBER 审中-公开

    公开(公告)号：US20180252866A1

    公开(公告)日：2018-09-06

    申请号：US15759648

    申请日：2016-09-14

    Applicant: Corning Incorporated

    Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

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

    CPC classification number: G02B6/03627 ,  G02B6/02009 ,  G02B6/0281

    Abstract: A single-mode fiber with low loss and low bend loss is disclosed. The fiber is single mode and has a central core (10), an inner cladding (20) and an outer cladding (30). The central core (10) has a radius r1 and relative refractive index with a maximum value of Δ1max and a core alpha greater than 1 and less than 10, and a Ge02 dopant concentration of greater than 1 wt. % and less than or equal to 5 wt. %. The inner cladding (20) has an outer radius r2>9 micrometers and a relative refractive index Δ2 where Δ2 is less then −0.15%. The outer cladding (30) has a refractive index Δ3, wherein Δ1>Δ3>Δ2. The difference Δ3−Δ2>0.005%. The inner cladding includes fluorine having a concentration of greater than or equal to 0.5 wt. % and the outer cladding is updoped with respect to inner cladding.

    Low bend loss single mode optical fiber with chlorine updoped cladding
    176.
    发明授权
    Low bend loss single mode optical fiber with chlorine updoped cladding 有权

    公开(公告)号：US10048438B2

    公开(公告)日：2018-08-14

    申请号：US15708438

    申请日：2017-09-19

    Applicant: Corning Incorporated

    Inventor： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

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

    Abstract: An optical fiber having both low macrobend loss and low microbend loss. The fiber has a central core region, a first (inner) cladding region surrounding the central core region and having an outer radius r2>16 microns and relative refractive index Δ2, and a second (outer) cladding region surrounding the first cladding region having relative refractive index, Δ3, wherein Δ1>Δ3>Δ2. The difference between Δ3 and Δ2 is greater than 0.12 percent. The fiber exhibits a 22 m cable cutoff less than or equal to 1260 nm, and r1/r2 is greater or equal to 0.24 and bend loss at 1550 nm for a 15 mm diameter mandrel of less than 0.5 dB/turn.

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