Corning Incorporated
High chlorine content low attenuation optical fiber

Abstract:

An optical fiber having a core comprising silica and greater than 1.5 wt % chlorine and less than 0.5 wt % F, said core having a refractive index .DELTA..sub.1MAX, and an inner cladding region having refractive index .DELTA..sub.2MIN surrounding the core, where .DELTA..sub.1MAX>.DELTA..sub.2MIN.