Patent ID: 6438303
Filing Date: 2002-08-20
Classification: C03B,G02B,Y02P

Abstract:
A method of forming a multimode optical fiber, said method comprising the steps of:thermochemically reacting a silica containing precursor reactant and at least one dopant reactant to form soot; delivering the soot to a target in a manner sufficient to produce a glass preform having specified characteristics; and drawing the glass preform into a multimode optical fiber having a 62.5 &mgr;m core region, and a cladding region bounding the core region, and wherein said reacting step comprises selecting said precursor reactant and said at least one dopant reactant according to a soot deposition recipe sufficient to result in a multimode optical fiber that exhibits a DMD profile, which when measured at a wavelength of 1300 nm, includes a first average slope measured over a first region from (r/a)2=0.0 to 0.25, and a second average slope measured over a second region from (r/a)2=0.25 to 0.50, and wherein the first average slope is greater in magnitude than the second average slope.