公开(公告)号：US06185351B2

公开(公告)日：2001-02-06

申请号：US09419382

申请日：1999-10-15

申请人： Omid Daneshvar ,  Nathan Scott Hatch ,  James William Thornton

发明人： Omid Daneshvar ,  Nathan Scott Hatch ,  James William Thornton

IPC分类号： G02B644

CPC分类号： G02B6/4432 ,  G02B6/4411 ,  G02B6/4422 ,  G02B6/4434

摘要： An all-dielectric, self-supporting (ADSS), loose-tube fiber optic cable includes a plurality of buffer tubes respectively containing stacks of optical fiber ribbons. The buffer tubes are longitudinally stranded around a longitudinally extending central strength member to define a lay length. A longitudinally extending outer strength assembly extends around the plurality of buffer tubes, and a longitudinally extending sheath extends around the outer strength assembly. A first end of a section of the cable can be attached to a first pole extending upward from the ground and a second end of the section of the cable can be attached to a second pole extending upward from the ground so that the section is suspended between the poles and the section is tensioned due to the weight of the cable. The arrangement of the buffer encasements and the optical fiber ribbons is such that the optical fibers are strained by tensioning of the fiber optic cable that exceeds a predetermined value, and any attenuation of optical signals propagating through the optical fibers is negligible for optical fiber strain up to approximately 0.3 percent. For example, the arrangement of the buffer encasements is preferably characterized by a lay length of at least approximately 400 millimeters. A longitudinally extending inner sheath can extend around the plurality of buffer encasements so that the outer strength assembly is positioned between the inner sheath and the outer sheath.

摘要翻译： 全绝缘自支撑（ADSS）松套管光缆包括分别包含光纤带叠的多个缓冲管。 缓冲管围绕纵向延伸的中心强度构件纵向绞合以限定铺设长度。 纵向延伸的外部强度组件围绕多个缓冲管延伸，并且纵向延伸的护套围绕外部强度组件延伸。 电缆的一部分的第一端可以附接到从地面向上延伸的第一极，并且电缆的该部分的第二端可以附接到从地面向上延伸的第二极，使得该部分悬挂在 由于电缆的重量，电极和部分被张紧。 缓冲器装置和光纤带的布置使得光纤通过超过预定值的光纤拉伸而变形，并且通过光纤传播的光信号的任何衰减对于光纤应变上升是可忽略的 至约0.3％。 例如，缓冲装置的布置优选地具有至少大约400毫米的铺设长度的特征。 纵向延伸的内护套可以围绕多个缓冲器套件延伸，使得外部强度组件定位在内护套和外护套之间。

公开(公告)号：US06421486B1

公开(公告)日：2002-07-16

申请号：US09346192

申请日：1999-07-01

申请人： Omid Daneshvar ,  Sridhar K. Siddhamalli

发明人： Omid Daneshvar ,  Sridhar K. Siddhamalli

IPC分类号： G02B644

CPC分类号： G02B6/4482 ,  G02B6/441

摘要： An optical fiber cable with a plurality of buffer tubes wherein the buffer tubes each encase a bundle of optical fibers. The buffer tubes are color-coded by means of mixing a buffer tube material with a colorant before or during the extrusion process. A polyolefin is used as the base resin for the color concentrate resulting in increased let down ratios. By using less colorant to deliver desired amount of pigment to the buffer tube, cost savings and enhanced processability are achieved.

摘要翻译： 一种具有多个缓冲管的光缆，其中缓冲管各自包围一束光纤。 缓冲管通过在挤出过程之前或期间将缓冲管材料与着色剂混合来进行颜色编码。 聚烯烃用作着色浓缩物的基础树脂，从而增加了降低的比例。 通过使用较少的着色剂将期望量的颜料输送到缓冲管，实现了成本节约和增强的可加工性。