Optical fiber with large mode field diameter and low microbend loss

摘要

An optical fiber having a mode field diameter of at least 8.8 μm at 1310 nm, a microbend loss of a wire mesh covered drum of less than 0.03 dB / km at 1550 nm, and a 2 m cutoff wavelength of less than 1320 nm. A fiber having a central core region, an inner cladding region, an outer cladding region, a first coating having an in situ modulus less than 0.20 MPa and a glass transition temperature less than −35 ° C., and an in situ modulus greater than 1500 MPa; And a second coating. The fiber may further comprise a refractive index reducing cladding region. The relative refractive index of the central core region may be greater than the relative refractive index of the outer cladding region, and the relative refractive index of the outer cladding region may be greater than the relative refractive index of the inner cladding region. The fiber may be manufactured at a drawing speed of 30 m / s or higher.