Binder film for a fiber optic cable

摘要

A fiber optic cable, or a sub-assembly thereof, includes core elements and a binder film. The core elements are wound in a stranded configuration that includes a pattern of reverse-oscillatory winding. The binder film overlays and surrounds the stranded core elements, and constrains the core elements in the stranded configuration.

主权项

1. A sub-assembly of a fiber optic cable, the sub-assembly comprising:
a central strength member; core elements wound about the central strength member in a stranded configuration that includes a pattern of reverse-oscillatory winding, wherein the core elements comprise buffer tubes, wherein the buffer tubes contain optical fibers, and wherein the buffer tubes include a water-blocking element; and a binder film overlaying and surrounding the stranded core elements, wherein the binder film forms a continuous closed loop in cross-section that extends lengthwise, wherein the binder film constrains the core elements in the stranded configuration, and wherein the binder film comprises a polymeric material having a Young's modulus of 3 gigapascals or less, thereby providing a relatively high springiness to the binder film so that the binder film may conform to the shape of the core elements and not overly distort the core elements, and thereby reducing likelihood of attenuation of the optical fibers.