Patent ID: 9075212
Filing Date: 2015-07-07
Classification: G02B

Abstract:
1. A fiber optic cable, comprising: a strength member configured to provide tensile strength as well as anti-buckling strength, wherein the strength member is a rod; tubes, each tube having a cavity, wherein the strength member provides reinforcement to the tubes, wherein the rod is a central strength member and wherein the tubes are wound around the rod in a pattern of reverse-oscillatory winding, wherein the tubes are generally round in cross-section and have an average outer diameter of 3 millimeters or less, wherein the tubes have an average inner diameter of 2 millimeters or less; and a binder sleeve for constraining the tubes, wherein the binder sleeve is primarily formed from an extruded polymer material; a jacket extruded around the binder sleeve; and optical fibers packed into the cavity of each tube such that the optical fibers bend therein, having excess optical fiber length providing a strain window such that the optical fibers experience less than 0.5 dB/km of increased average attenuation at 1310 nanometers wavelength when the cable experiences strain of up to 1% compared to when unstrained.