Coated optical fiber, optical fiber ribbon, and optical cable

    公开(公告)号:US09846292B2

    公开(公告)日:2017-12-19

    申请号:US14296003

    申请日:2014-06-04

    IPC分类号: G02B6/44 G02B6/02

    摘要: The purpose of the present invention is to provide, by a configuration or method different from conventional art, a coated optical fiber enabling reduced interface delamination between a glass fiber and a primary coating layer when the coated optical fiber is immersed in water, and a reduction of transmission loss increase. A coated optical fiber according to one embodiment of the present invention is provided with a glass fiber, a primary coating layer coated on the glass fiber, a secondary coating layer coated on the primary coating layer, and a colored layer coated on the secondary coating layer. The coated optical fiber is configured so that small water bubbles are generated substantially evenly within the primary coating layer when the coated optical fiber is immersed for 200 days in warm water of 60° C.

    Colored coated optical fiber
    13.
    发明授权
    Colored coated optical fiber 有权
    彩色涂层光纤

    公开(公告)号:US08639077B2

    公开(公告)日:2014-01-28

    申请号:US13754985

    申请日:2013-01-31

    IPC分类号: G02B6/02 G02B6/44

    CPC分类号: G02B6/02395 G02B6/4482

    摘要: The present invention provides a colored coated optical fiber which hardly has an increase in transmission loss even when immersed in water. A colored coated optical fiber according to one embodiment of the present invention includes a glass optical fiber, a primary coating layer covering the glass optical fiber, a secondary coating layer covering the primary coating layer, and a colored layer covering the secondary coating layer. A ratio of a thermal expansion coefficient of a laminate including the secondary coating layer and the colored layer covering the secondary coating layer to that of the secondary coating layer is 0.98 or more and 1.03 or less. A ratio of a glass transition temperature based on a dynamic viscoelasticity within a temperature range from −100° C. to 150° C. of the laminate to that of the secondary coating layer is 0.96 or more and 1.03 or less.

    摘要翻译: 本发明提供一种着色涂层光纤,即使在浸入水中也难以增加传输损耗。 根据本发明的一个实施方案的着色涂层光纤包括玻璃光纤,覆盖玻璃光纤的主要涂层,覆盖第一涂层的二次涂覆层和覆盖第二涂层的着色层。 包含第二被覆层和覆盖第二被覆层的着色层的层叠体的热膨胀系数与第二被覆层的热膨胀系数的比率为0.98以上且1.03以下。 基于层压体的-100℃至150℃的温度范围内的基于动态粘弹性的玻璃化转变温度与二次涂层的比例为0.96以上且1.03以下。

    Optical fiber ribbon and optical fiber cable

    公开(公告)号:US11105992B2

    公开(公告)日:2021-08-31

    申请号:US17014722

    申请日:2020-09-08

    IPC分类号: G02B6/44

    摘要: Provided is an optical fiber ribbon and an optical fiber cable, which are adaptable to manufacture at a high velocity, in the intermittent connecting type optical fiber ribbon obtained by adhering and connecting adjacent colored optical fibers by intermittent connecting portions. In an optical fiber ribbon 2 of the present invention, since, in addition to polyol having a weight average molecular weight in a specific range, rheology control agent is contained in a specific range in a material forming an intermittent connecting portion 3, the Newtonian region between a low shear rate region and a high shear rate region of the material forming the intermittent connecting portion 3 can be adjusted. Thus, scattering of the material due to a centrifugal force generated by rotation of an application roll that applies the material at the time of manufacture and the like can be suppressed, and the application amount to colored optical fiber 1 can be stabilized. In addition, the optical fiber ribbon 2 can maintain suppression of such scattering and the like even in the manufacture at a high linear velocity.

    Coated optical fiber and method for manufacturing coated optical fiber

    公开(公告)号:US09874685B2

    公开(公告)日:2018-01-23

    申请号:US15583399

    申请日:2017-05-01

    摘要: A coated optical fiber, including a coating layer with a high elastic modulus even when a glass optical fiber is coated with resin by using an ultraviolet semiconductor light emitting element as a light source for curing resin and using a Wet-on-Wet method, is provided. A manufacturing method of the coated optical fiber includes: applying a first ultraviolet curable resin to a glass optical fiber; applying a second ultraviolet curable resin to the periphery of the first ultraviolet curable resin before curing the first ultraviolet curable resin; and irradiating the first and second ultraviolet curable resins with light in a wavelength range of 350 to 405 nm emitted from an ultraviolet semiconductor light emitting element, wherein the second ultraviolet curable resin contains a photopolymerization initiator that absorbs the light from the ultraviolet semiconductor light emitting element to generate radicals, and the photopolymerization initiator has photobleaching properties.