An optical fiber comprising: (i) a core comprising silica and having a maximum relative refractive index delta Δ1MAX; and LP01 effective area>100 μm2 at 1550 nm;(ii) an inner cladding surrounding the core and having a minimum relative refractive index delta Δ2MIN and ΔcoreMAX>Δ2MIN; (iii) an outer cladding surrounding the inner cladding and comprising a first outer cladding portion with a maximum refractive index Δ3A such that Δ3A>Δ2MIN; and another outer cladding portion surrounding the first outer cladding portion with a maximum refractive index delta Δ3B wherein with a maximum refractive index delta Δ3B wherein Δ3B>Δ3A, said another portion being the outermost portion of the outer cladding; and (iv) a coating layer surrounding the outer cladding, and in contact with said another outer cladding portion, the coating layer having a relative refractive index delta ΔC wherein ΔC>Δ3B.