Patent ID: 7876990
Filing Date: 2011-01-25
Classification: C03B,G02B,Y02P

Abstract:
1. An optical waveguide fiber comprising: a core and a cladding, the core having a relative refractive index profile Δ(r) expressed in units of %, said core comprising an alpha profile having an initial point r and the core and the cladding provide a fiber with an attenuation of less than 0.331 dB/km at a wavelength of 1310 nm, an attenuation of less than 0.328 dB/km at a wavelength of 1383 nm, an attenuation of less than 0.270 dB/km at a wavelength of 1410 nm, and an attenuation of less than 0.190 dB/km at a wavelength of 1550 nm.