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    Optical fiber with primary and secondary coating layers
    3.
    发明授权
    Optical fiber with primary and secondary coating layers 有权

    公开(公告)号：US11835756B2

    公开(公告)日：2023-12-05

    申请号：US17289948

    申请日：2019-11-08

    申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

    发明人： Kensaku Shimada ,  Kazuyuki Sohma ,  Tatsuya Konishi

    IPC分类号： G02B6/02 ,  C03C25/1065 ,  C03C25/326

    CPC分类号： G02B6/02395 ,  C03C25/1065 ,  C03C25/326

    摘要： An optical fiber comprises a glass fiber comprising a core and a cladding; and a coating resin layer coating the glass fiber, wherein the coating resin layer has a primary resin layer in contact with the glass fiber and coating the glass fiber and a secondary resin layer coating the outer periphery of the primary resin layer, the primary resin layer has a Young's modulus of 0.4 MPa or less at 23° C. and the primary resin layer has an outer diameter of 185 μm or more and 202 μm or less, the secondary resin layer has a glass transition temperature of 60° C. or more and 95° C. or less, and the difference between the average linear expansion coefficient of the coating resin layer in the range of 60° C. to 140° C. and the average linear expansion coefficient of the coating resin layer in the range of −60° C. to 0° C. is 0.7×10−4/° C. or less.

    High speed draw optical fiber coating system and method
    8.
    发明授权
    High speed draw optical fiber coating system and method 有权

    公开(公告)号：US11407682B2

    公开(公告)日：2022-08-09

    申请号：US16930723

    申请日：2020-07-16

    申请人： CORNING INCORPORATED

    发明人： Dana Craig Bookbinder ,  Pushkar Tandon ,  Ruchi Tandon

    IPC分类号： C03C25/20 ,  C03B37/025 ,  C03B37/027 ,  C03B37/03 ,  C03C13/04 ,  C03C25/1065 ,  C03C25/285

    摘要： An optical fiber draw system and method of coating an optical fiber. The system includes a furnace for heating an optical fiber preform, a draw assembly for drawing the optical fiber at a draw speed greater than 50 meters per second, a first coating applicator for applying a first coating onto the fiber, and a first curing assembly comprising a first plurality of light sources comprising light-emitting diodes for partially curing the first coating. The optical fiber draw system also includes a second coating applicator for applying a second coating onto the fiber on top of the first coating, and a second curing system comprising a second plurality of light sources for curing the second coating, wherein the first coating is further cured in the range of 15-50 percent after leaving the first curing assembly.

    Coated Fiber Optic Chemical and Radiation Sensors
    10.
    发明申请
    Coated Fiber Optic Chemical and Radiation Sensors 有权

    公开(公告)号：US20220107272A1

    公开(公告)日：2022-04-07

    申请号：US17060253

    申请日：2020-10-01

    申请人： Consolidated Nuclear Security, LLC

    发明人： Vincent E. LAMBERTI ,  Dayakar PENUMADU

    IPC分类号： G01N21/77 ,  G01M3/04 ,  C03C25/1065 ,  G02B6/036 ,  G01T3/06

    摘要： Distributed fiber optic chemical and radiation sensors formed by coating the fibers with certain types of response materials are provided. For distributed chemical sensors, the coatings are reactive with the targets; the heat absorbed or released during a reaction will cause a local temperature change on the fiber. For distributed radiation sensors, coating a fiber with a scintillator enhances sensitivity toward thermal neutrons, for example, by injecting light into the fiber. The luminescent components in these materials are taken from conjugated polymeric and oligomeric dyes, metal organic frameworks with sorbed dyes, and two-photon-absorbing semiconductors. The compositions may exhibit strong gamma rejection. Other scintillators combining luminescent materials with neutron converters are available. With a multiple-layer coating, it may be possible to identify the presence of both neutrons and gamma rays, for example. Coatings may be applied during manufacture or in the field.