Patent ID: 7411728

Claim:
A Raman amplification device having an input and an output, the device comprising: (i) a Raman gain fiber having a profile selected to provide a dispersion of between 25 ps/nm/km and −15 ps/nm/km at a wavelength of 1450 nm and a dispersion slope of between 0 ps/nm 2 /km and 0.05 ps/nm 2 /km at a wavelength of 1450 nm, wherein said Raman gain fiber has a germania-doped core having an index profile having an α of between 1.5 and 2.5 and a radius of between 1.8 μm and 2.4 μm, a cladding, and a core-to-cladding Δ of at least 1.8%; and a pump source operatively coupled to the Raman gain fiber.