Patent ID: 8718431
Filing Date: 2014-05-06
Classification: G02B

Abstract:
1. A trench-assisted optical fiber, optimized for microbending and figure-of-merit (FOM) performance, comprising a core region having a longitudinal axis, a shelf region surrounding said core region, a cladding region surrounding said shelf region, said core and shelf and cladding regions configured to support and guide the propagation of signal light in a fundamental transverse mode in said core and shelf regions in the direction of said axis, the cladding region including an inner trench and an outer trench, wherein the optical fiber further comprises: a core radius between about 5.5 μm and about 7.0 μm; a core delta between about 0.13% and about 0.23%; a core volume between about 5 μm a shelf width between about 4 μm and about 8 μm; a trench inner radius between about 10 μm and about 14 μm; a trench width between about 1 μm and about 5 μm; a trench delta less than about −0.25%; a trench volume between about −70 μm a core effective area (Aeff) of between 135 μm a effective relative refractive index difference of greater than about 0.08%; a loss at 1550 nm of less than 0.185 dB/km; a figure of merit (FOM) frontier distance less than about 0.8 dB; and a microbend frontier (MBF) distance of less than about 90%.