Optimized ultra large area optical fibers

摘要

Certain embodiments of the invention may include optimized trench-assisted ultra large area (ULA) optical fibers. According to an example embodiment of the invention, a trench-assisted optical fiber, optimized for microbend frontier (MBF) performance is provided. The optical fiber includes 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 optical fiber further includes a core effective area (Aeff) of between 135 μm2 and about 170 μm2; a relative effective index difference (Neff) of greater than about 0.08%; a loss at 1550 nm of less than 0.180 dB/km; and a microbend frontier (MBF) distance of less than about 90%.

主权项

1. A trench-assisted optical fiber, optimized for microbending 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 effective area (Aeff) of between 130 μm2 and about 170 μm2; an effective relative refractive index difference of greater than about 0.08%; a loss at 1550 nm of less than 0.180 dB/km; and a microbend frontier (MBF) distance of less than about 90%, wherein the microbend frontier (MBF) distance is defined as: B1·core delta+B2·(core radius)−1+B3·core volume+B4·trench delta+B5·(trench inner radius)−1 +B6·trench inner radius+B7·trench volume+B8·trench volume·trench inner radius, and wherein B 1 is approximately 690; B2 is approximately−0.7 μm; B3 is approximately−0.27 μm−2; B4 is approximately 14; B5 is approximately 3 μm; B6 is approximately 0.07 μm−1; B7 is approximately 0.03 μm−2; and B8 is approximately−0.0016 μm−3.