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    • 9. 发明授权
    • Method and apparatus for fabricating coated optical fiber, and coated optical fiber
    • 用于制造涂覆光纤和涂覆光纤的方法和装置
    • US06519404B1
    • 2003-02-11
    • US09890166
    • 2001-07-27
    • Motohide YoshidaKatsuyuki TsuneishiMasao KoidaKatsuya Nagayama
    • Motohide YoshidaKatsuyuki TsuneishiMasao KoidaKatsuya Nagayama
    • G02B602
    • C03B37/032C03B37/027C03B37/02745C03B2203/06C03B2203/19C03B2203/36C03B2205/06C03C25/12C03C25/18
    • In a fabrication method of coated optical fiber 21, the coated optical fiber 21 is fabricated by heating to soften an end of an optical fiber preform 11 to draw a glass fiber 13 out therefrom, laying coatings 16, 19 on the glass fiber 13 to make the coated optical fiber 21, and guiding the coated optical fiber 21 via a swing guide roller 23 periodically swinging, to twist the coated optical fiber 21, thereby imparting twists about the axis to the glass fiber 13 inside the coated optical fiber 21. The fabrication method comprises a step of passing the coated optical fiber 21 having passed the swing guide roller 23, through a free zone (between 26 and 27) in which the coated optical fiber 21 is allowed to freely rotate about the axis, and thereby longitudinally canceling out elastic torsion stored in the coated optical fiber 21 because of longitudinally alternate inversion of twist directions thereof, wherein a zone length L (m) of the free zone is not less than Lo (m) defined as follows: Lo (m)=[a maximum drawing speed of the coated optical fiber (m/min)]/[the number of clockwise and counterclockwise swing motions per unit time of the swing guide roller (motions/min)].
    • 在涂覆光纤21的制造方法中,通过加热来制造涂覆光纤21,以软化光纤预制棒11的端部,从中拉出玻璃纤维13,将玻璃纤维13上涂覆涂层16,19 涂布光纤21,经由摆动导向辊23周期性摆动地引导被覆光纤21,使被覆光纤21扭曲,从而使被覆光纤21内的玻璃纤维13绕轴线扭曲。 方法包括使已经通过摆动引导辊23的涂覆光纤21通过允许涂覆光纤21绕轴线自由旋转的自由区(26和27之间)的步骤,从而纵向消除 由于其扭转方向的纵向交替反转,存储在涂覆光纤21中的弹性扭转,其中自由区的区段长度L(m)不小于如下定义的Lo(m) :Lo(m)= [涂覆光纤的最大拉伸速度(m / min)] / [摆动导辊的每单位时间的顺时针和逆时针摆动运动的数量(运动/分钟)]。
    • 10. 发明授权
    • Method for coating optical transmission glass fibers
    • 光传输玻璃纤维涂层方法
    • US4512281A
    • 1985-04-23
    • US529779
    • 1983-09-06
    • Toru YamanishiKatsuyuki TsuneishiMasaaki Yoshida
    • Toru YamanishiKatsuyuki TsuneishiMasaaki Yoshida
    • C03C25/10C03C25/14B05B5/02B05C5/02B05D5/06
    • C03C25/106C03C25/143
    • A method and apparatus for coating optical transmission glass fibers with a resinous composition. A vessel is provided through which a glass fiber is drawn. While it is being drawn through the vessel, the fiber is spun, and a resin coating is applied. In order to maintain the air pressure within the vessel fairly constant, an exhaust vent is provided through which excess particles of the resinous composition may escape. Turbulence is thus substantially reduced preventing the fiber from swinging and allowing the particles to be sprayed smoothly. Further, the particles may be electrically charged so that they are both attracted to the optical fiber and repel one another during flight. The invention employs both of these features to produce a uniform coat on an optical transmission glass fiber.
    • 一种用树脂组合物涂覆光学透射玻璃纤维的方法和装置。 提供容器,通过该容器拉出玻璃纤维。 当它被吸收通过容器时,纤维被纺丝,并施加树脂涂层。 为了保持容器内的空气压力相当恒定,提供排气口,通过该排气口,树脂组合物的多余颗粒可以逸出。 因此,湍流显着减少,防止纤维摆动并允许颗粒平滑喷射。 此外,颗粒可以带电,使得它们都被吸引到光纤并在飞行中彼此排斥。 本发明使用这两个特征来在光学透射玻璃纤维上产生均匀的涂层。