Tb2O3/Ce2O3-Codoped B2O3–Ga2O3(Al2O3) Glasses with a Large Faraday Effect Synthesized via Containerless Method for Small Optic Isolators

crystal. Measurements of the extinction ratio, valence state of Tb element, and local glass structure are also carried out and discussed in detail. The results suggest that the glasses are promising candidates in particular for designing innovative MO devices for potential multiband applications.