However borophosphate glasses are promising host materials for optical applications because of their good optical properties, low refractive indices, low dispersion and good transparency from the ultraviolet to the near-infrared regions Furthermore, the combination of B2O3 and P2O5 in the same glass matrix with additional oxides resulted in properties enhancements. Among of the oxides, ZnO was widely used to improve the chemical stability of phosphate glasses [16]. Furthermore, ZnO is well-known as an intermediate oxide in glass since Zn2+ has a large ion radius and an electronic configuration with 18 outer-shell electrons. Zn2+ can either form ZnO4 [18] or P–O–Zn bridges [19] via phosphate chains linkages in the glass network.