Patent ID: 7099543
Filing Date: 2006-08-29
Classification: G02B

Abstract:
1. An optical fiber comprising: a length; a core having a refractive index profile and a centerline; the core refractive index comprising a central segment, a moat segment surrounding the central segment, and a ring segment surrounding the moat segment, the central segment having a greater relative refractive index than the ring segment, the ring segment having a greater relative refractive index than the moat segment, and a cladding layer surrounding and directly adjacent the core; wherein the optical fiber has an attenuation at 1550 nm; wherein the refractive index of the core is selected to provide: an optical effective area at 1550 nm less than 80 μm a dispersion at 1550 nm having an absolute magnitude less than 7.5 ps/nm-km; and an absolute SBS threshold in dBm greater than about 9.5+10 log [(1−e