Coupling system for fiber optic cable using folded tape

摘要

A fiber optic cable includes a tube, a stack of fiber optic ribbons twisting along a lengthwise axis through the tube, and water-blocking tape positioned at least partially around the stack, between the stack and the tube. The water-blocking tape is folded such that an elevated portion of the water-blocking tape is raised. As the stack twists along the lengthwise axis of the tube, corners of the stack interface with the elevated portion to provide intermittent frictional coupling between the stack and the tube.

主权项

1. A fiber optic cable, comprising:
a tube having an interior; a stack of fiber optic ribbons extending through the interior of the tube, wherein the stack twists along a lengthwise axis of the tube; water-blocking tape positioned at least partially around the stack in the interior of the tube, between the stack and the tube, wherein the water-blocking tape is folded such that an elevated portion of the water-blocking tape is raised toward a lengthwise center of the interior of the tube, wherein, as the stack twists along the lengthwise axis of the tube, at a position along the length of the cable in which a first cross-sectional dimension of the stack is aligned with the elevated portion, the stack interfaces with the elevated portion to provide frictional coupling between the stack and the tube, and wherein, at another position along the length of the cable in which a second cross-sectional dimension of the stack is aligned with the elevated portion, the stack has less frictional coupling with the tube.