Patent ID: 7099544
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 profile comprising a first central segment and a second segment surrounding and adjacent to the first central segment, wherein the relative refractive index of the second segment is less than that of the first 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 no less than 80 μm a zero dispersion wavelength less than about 1450 nm; a dispersion at 1550 nm greater than 10 ps/nm-km; and an absolute SBS threshold in dBm greater than about 10+10 log [(1−e