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    • 1. 发明授权
    • Methods of making optical fiber with reduced hydrogen sensitivity
    • 制造具有降低氢敏感性的光纤的方法
    • US09309143B2
    • 2016-04-12
    • US14337364
    • 2014-07-22
    • Corning Incorporated
    • Steven Akin DunwoodyRobert Clark MoorePushkar Tandon
    • G02B6/00C03B37/027C03B37/07C03B37/10G02B6/10C03B37/03G02B6/02
    • C03B37/02718C03B37/02727C03B37/032C03B37/07C03B37/10C03B2205/55C03B2205/56G02B6/02G02B6/10Y02P40/57
    • A method of making optical fibers that includes controlled cooling to produce fibers having a low concentration of non-bridging oxygen defects and low sensitivity to hydrogen. The method may include heating a fiber preform above its softening point, drawing a fiber from the heated preform and passing the fiber through two treatment stages. The fiber may enter the first treatment stage at a temperature between 1500° C. and 1700° C., may exit the first treatment stage at a temperature between 1200° C. and 1400° C., and may experience a cooling rate less than 5000° C./s in the first treatment stage. The fiber may enter the second treatment stage downstream from the first treatment stage at a temperature between 1200° C. and 1400° C., may exit the second treatment stage at a temperature between 1000° C. and 1150° C., and may experience a cooling rate between 5000° C./s and 12,000° C./s in the second treatment stage. The method may also include redirecting the fiber with a fluid bearing device or an air-turn device.
    • 制造光纤的方法包括控制冷却以产生具有低浓度的非桥接氧缺陷和对氢的低敏感性的纤维。 该方法可以包括在其软化点之上加热纤维预制件,从加热的预成型件拉伸纤维并使纤维通过两个处理阶段。 纤维可以在1500℃和1700℃之间的温度下进入第一处理阶段,可以在1200℃和1400℃之间的温度下离开第一处理阶段,并且可能经历的冷却速率小于 在第一处理阶段为5000℃/秒。 纤维可以在1200℃和1400℃之间的温度下进入第一处理阶段下游的第二处理阶段,可以在1000℃和1150℃之间的温度下退出第二处理阶段,并且可以 在第二处理阶段经历5000°C /秒和12,000°C / s之间的冷却速度。 该方法还可以包括用流体轴承装置或空气转动装置重新定向纤维。
    • 4. 发明申请
    • Fiber coolant system including improved gas seals
    • 纤维冷却剂系统包括改进的气体密封
    • US20040194513A1
    • 2004-10-07
    • US10765468
    • 2004-01-28
    • Frederick W. GiacobbeOvidiu MarinJoseph E. PaganessiM. Usman GhaniMartin Theriault
    • C03B037/07
    • C03B37/02718C03B2205/50C03B2205/55C03B2205/83
    • A coolant system for cooling a fiber includes a heat exchanger with an internal passage disposed between a fiber inlet and fiber outlet to cool the fiber moving through the internal passage. A plurality of chambers are disposed within the internal passage, and at least one fluid medium flows within at least a portion of the internal passage, and at least one adjustable seal is positioned within the internal passage to form a partition between two adjacent chambers. A gas analyzer communicates with at least one chamber of the internal passage to extract a fluid sample from the chamber and to measure a concentration of a gas in the extracted fluid sample. A controller communicates with the analyzer and controls at least one of the adjustable seal and the flow rate of fluid medium within the internal passage based upon the measured concentration.
    • 用于冷却纤维的冷却剂系统包括热交换器,其具有设置在纤维入口和纤维出口之间的内部通道,以冷却通过内部通道移动的纤维。 多个室设置在内部通道内,并且至少一个流体介质在内部通道的至少一部分内流动,并且至少一个可调整密封件定位在内部通道内以在两个相邻的室之间形成隔板。 气体分析仪与内部通道的至少一个室连通,以从室中提取流体样品并测量提取的流体样品中的气体浓度。 控制器与分析器通信,并且基于测量的浓度来控制内部通道内的流体介质的可调节密封和流速中的至少一个。
    • 5. 发明申请
    • Drawing method for optical fiber
    • 光纤拉丝方法
    • US20040031291A1
    • 2004-02-19
    • US10442023
    • 2003-05-20
    • Takahiro HamadaMunehisa Fujimaki
    • C03B025/00
    • C03B37/02718C03B2205/55
    • The present invention provides a drawing method for optical fiber, which is capable of reducing attenuation at 1.55 um due to Rayleigh scattering, even if the drawing speed is high. The reduction of the attenuation of the optical fiber 3 is realized by conducting a preliminary cooling in a first cooling zone 4, which has a low convection heat transfer coefficient, for reducing the temperature of the as-drawn optical fiber just before entering into a second cooling zone 5. The optical fiber is obtained after being cooled in the second cooling zone 5, which has a higher convection heat transfer coefficient.
    • 本发明提供了一种光纤的拉制方法,其即使拉伸速度高,也能够减少由于瑞利散射而在1.55μm处的衰减。 通过在具有低对流传热系数的第一冷却区域4中进行初步冷却来实现光纤3的衰减的减少,以便在进入第二冷却区域之前降低所绘制的光纤的温度 冷却区域5.在具有较高对流传热系数的第二冷却区域5中冷却之后获得光纤。
    • 9. 发明授权
    • Gradient refractive index light-conducting glass structure
    • 梯度折射率导光玻璃结构
    • US3877783A
    • 1975-04-15
    • US86124769
    • 1969-09-26
    • NIPPON SELFOC CO LTD
    • MATSUMURA HIROYOSHIONO SEIICHI
    • C03B37/023C03B37/027C03B37/029C03C21/00G02B6/028G02B5/14
    • G02B6/0281C03B37/023C03B37/027C03B37/02718C03B37/029C03B2201/30C03B2201/50C03B2203/06C03B2203/22C03B2205/02C03B2205/55C03B2205/56C03C21/00C03C21/001
    • A light-conducting glass structure, the refractive index of which in each cross section perpendicular to the centre line or plane along which light is to advance of the structure decreases progressively from the centre line or plane toward the outer surface of the structure, and the rate of decreasing the refractive index is smaller at the vicinity of at least either end surface being transverse to the centre line or plane than that in the other part of the glass structure. The decrease of refractive index occurs by varying the concentration within the glass structure of at least two kinds of cations (They differ from each other in their contributions to increasing of refractive index.) constituting modifying oxides. The rate of decreasing refractive index at the vicinity of at least either end surface of the glass structure is made to carry out by such a manner that the cation within the glass structure (Which is either of at least two kinds of cations mentioned above and has higher contributions to the increase of refractive index than that of the other.) is substituted by another cation from an external cation source in a greater extent, or a stretching ratio of a part to be an end surface of the glass structure having a certain rate of decreasing refractive index is adjusted to be smaller.
    • 导光玻璃结构的折射率在垂直于结构的光的中心线或平面的每个横截面中的折射率逐渐从中心线或平面朝向结构的外表面逐渐减小,并且 在至少任一端面的附近,折射率的降低率比玻璃结构的其他部分横向于中心线或平面的距离更小。 折射率的降低通过改变构成改性氧化物的至少两种阳离子(它们彼此不同于它们对折射率增加的贡献)的玻璃结构内的浓度而发生。 使玻璃结构的至少任一端面附近的折射率降低的速率通过使玻璃结构内的阳离子(其为上述至少两种阳离子,并且具有 对折射率增加的贡献高于另一个)由外部阳离子源的另一阳离子被更大程度地取代,或者具有一定速率的作为玻璃结构的端面的部分的拉伸比 降低折射率被调整为更小。