Patent ID: 8934747
Filing Date: 2015-01-13
Classification: G02B

Abstract:
1. A micromodule cable, comprising: an outer jacket; a plurality of breakout units enclosed in the outer jacket, each breakout unit having a plurality of micromodules, a jacket enclosing the micromodules, and an aramid strain relief element adjacent to the jacket, with each micromodule having at least one bend resistant optical fiber and a polymer sheath surrounding the at least one bend resistant optical fiber, wherein the at least one bend resistant optical fiber comprises a glass cladding region surrounding and directly adjacent to a glass core region, wherein the cladding comprises a first annular portion having a lesser refractive index relative to a second annular portion of the cladding, wherein the first annular portion is interior to the second annular portion, and wherein the cladding is surrounded by a low modulus primary coating and a high modulus secondary coating; and a central strength member, the breakout units being arranged around the central strength member, wherein the cable satisfies the NFPA 262 plenum burn test, wherein each polymer sheath comprises polyvinyl chloride, and wherein when the cable is subjected to a corner bend tie down test at two tie down bend locations of 25.4 mm radius, delta attenuation at 850 nm in the cable due to the bend is less than 0.05 dB.