Patent ID: 8837889
Filing Date: 2014-09-16
Classification: C03B,G02B

Abstract:
1. An optical transmission fiber, comprising: a central core and an outer optical cladding, the central core having a first refractive index difference (Δn a first inner cladding surrounding the central core, the first inner cladding having a second refractive index difference (Δn a second, buried, inner cladding disposed between the first inner cladding and the outer cladding, the second inner cladding having a third refractive index difference (Δn wherein the optical transmission fiber has a cabled cut-off wavelength of 1260 nanometers or less; wherein the optical transmission fiber has a dispersion cancellation wavelength (λ wherein, at a wavelength of 1625 nanometers, the optical transmission fiber has bending losses of 2 dB or less for a winding of one turn around a bending radius of 5 millimeters.