Properties of tellurite core/cladding glasses for magneto-optical fibers

The design and fabrication of a tellurite based magneto-optical (MO) glass for MO fiber applications are presented and discussed. Two MO glasses based on the TeO2-PbO-B2O3-SiO2 system were investigated in terms of thermal, optical and magnetic performances as a core/cladding pair for MO fiber fabrication. The optimal core and cladding elemental compositions were found to be: (58.8-60%) TeO2-(39.2-40%) PbO-(0.5-2%) B2O3 mol% for core glass, and (76-58.2) TeO2-(36-38.8%) PbO-(0.5-2%) B2O3-(0.3-2%) SiO2 mol% for cladding glass. The Verdet constant and Figure of merit of the fabricated glasses were measured under different wavelengths using a home-made optical bench. (C) 2014 Elsevier B.V. All rights reserved.