Optical and vibrational studies have been carried out on 60B 2 O 3 ·(20−x)Na 2 O·10PbO·10Al 2 O 3 :xTiO 2 (x=0, 1, 2, 3, 4, and 5mol%) glasses, in order to understand the role of TiO 2 in the 60B 2 O 3 ·20Na 2 O·10PbO·10Al 2 O 3 glass matrix. The X-ray patterns reveal homogeneous glasses over the entire compositional range. The absorption spectra show that the energy of the optical band gap (ΔE opt ) and Urbach's energy (E U ) decreases as TiO 2 content increases. The changes observed in the Raman and IR spectra are related to the BO 4 →BO 3 back conversion effect and the appearance of “loose” BO4− groups. The data indicate that titanium ions act as a network modifier.