Polarization maintaining and single polarization optical fiber

摘要

An optical fiber, comprising: (i) a core having a core center and a radius or a width a, (ii) a cladding surrounding the core, and (iii) at least one stress member situated proximate to the fiber core within the cladding, said stress member comprising silica co-doped with F and at least one dopant selected from the list consisting of: GeO₂, P₂O₅, Y₂O₃, TiO₂ and Al₂O₃,wherein distance b between the stress member and the core center satisfies the following equation: 1≦b/a2.