| http://www.w3.org/ns/prov#value | - If such copolymers as mentioned above are employed as the cladding material of an optical fiber of this invention, for instance, such disadvantage as a low heat distortion temperature of a cladding material in which 1H, 1H, 5H-octafluoropentyl methacrylate polymer is used as the cladding component, or as a fragile cladding material in which 1H, 1H-trifluoroethyl methacrylate polymer is employed as
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