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    • 94. 发明授权
    • Optical fiber
    • 光纤
    • US08571372B2
    • 2013-10-29
    • US13101377
    • 2011-05-05
    • Yasuo NakajimaKouji MochizukiHiroki TanakaYoshihiro Arashitani
    • Yasuo NakajimaKouji MochizukiHiroki TanakaYoshihiro Arashitani
    • G02B6/028G02B6/036
    • G02B6/4482G02B6/02395G02B6/4403
    • The present invention provides an optical fiber in which the transmission loss increase is suppressed even under a high-humidity condition or under a water-immersed condition. A colored optical fiber (22) according to an embodiment of the present invention is a colored optical fiber (22) formed by applying a colored layer to an optical fiber (14) including a glass optical fiber coated with at least a double-layered coating layer of a soft layer and a hard layer, and the ratio of thermal expansion coefficient between the coating layer after the colored layer of the colored optical fiber (22) is applied and the coating layer of the optical fiber (14) before the colored layer is applied is 0.87 or more. Furthermore, an optical fiber ribbon (32) according to another embodiment of the present invention is an optical fiber (32) formed by arranging a plurality of the colored optical fiber (22) in the form of a plane and coating them all together with a ribbon resin and the ratio of thermal expansion coefficient between the coating layer after the colored layer of the colored optical fiber (22) is applied and the coating layer of the optical fiber before the colored layer is applied is 0.90 or more.
    • 本发明提供即使在高湿度条件下或在水浸条件下也能够抑制传输损失增加的光纤。 根据本发明的实施例的着色光纤(22)是通过将着色层施加到包括至少涂覆有双层涂层的玻璃光纤的光纤(14)而形成的着色光纤(22) 软层和硬层的层,并且施加着色光纤(22)的着色层之后的涂层之间的热膨胀系数与光纤(14)的涂层之间的着色层 被应用为0.87以上。 此外,根据本发明的另一实施例的光纤带(32)是通过将多个着色光纤(22)以平面形式布置并且将它们全部涂覆在一起而形成的光纤(32) 带状树脂,着色光纤(22)的着色层之后的涂层之间的热膨胀系数与涂布着色层之前的光纤涂层的比例为0.90以上。