Optical fiber raw material composition, optical fiber, and optical fiber product

An optical fiber product, comprising:

• an optical fiber, wherein
• the optical fiber includes optical fiber cladding and an optical fiber core,
• the optical fiber cladding is wrapped on the outside of the optical fiber core,
• the optical fiber cladding is prepared using an optical fiber raw material composition, wherein the optical fiber raw material composition comprises components of the following molar percentages:
• AlF3 10%-50%, BaF2 3%-20%, CaF2 3%-20%, YF3 1%-15%, SrF2 3%-20%, MgF2 3%-20%, and TeO2 1%-35%, with a sum of molar percentages of the components AlF3, BaF2, CaF2, YF3, SrF2, MgF2 and TeO2 being 100%, and
• the optical fiber core is prepared using an erbium-doped optical fiber raw material composition comprising AlF3 10%-50%, BaF2 3%-20%, CaF2 3%-20%, YF3 1%-15%, SrF2 3%-20%, MgF2 3%-20%, and TeO2 1%-35%, and an Er ion,
• wherein the molar percentages of components in the optical fiber raw material composition for the optical fiber cladding are different from the corresponding molar percentages of components in the erbium-doped optical fiber raw material composition for the optical fiber core, and
• wherein the optical fiber core has a refractive index greater than that of the optical fiber cladding.