Patent ID: 9075215
Filing Date: 2015-07-07
Classification: G02B

Abstract:
1. A duplex cable having a cross-sectional area, the cable comprising: a polymer jacket having a diameter of less than 3.0 mm; only two optical waveguides enclosed within the jacket; and a strain-relief component comprised of tensile yarns enclosed within the jacket and contacting the optical waveguides, wherein the tensile yarns are unstranded, wherein the tensile yarns occupy a cross-sectional area that is less than 33 percent of the cross-sectional area of the cable, and wherein free space inside the polymer jacket occupies at least 13 percent of the cross-sectional area of the cable, wherein the free space in the duplex cable allows the two optical waveguides to move about within the interior of the jacket so as to reduce bending stresses on the two optical waveguides, and wherein the tensile yarns are fluffed out and fill the free space but not to a degree that the tensile yarns unduly restrict movement of the two optical waveguides.