<p>The invention provides an optical fiber comprising a cladding and a core wherein the cladding comprises a terpolymer comprising: (1) about 50 to about 90 mol.% of vinylidene fluoride, (2) about 8 to about 45 mol.% of trifluoroethylene and (3) about 2 to about 15 mol.% of hexafluoropropylene or perfluoro(alkylvinylether). o</p>
