MATERIAL DISPERSION IN OPTIMIZED FLUOROINDATE GLASSES

In this study, the optical properties of two InF3-based glasses exhibi ting high thermal stability have been thoroughly investigated. Infrare d transmission, the compositional dependence of the refractive index a nd material dispersion studies are discussed. IZBS glass has been opti mized by systematic compositional substitutions. The resulting high re sistance to crystallization allowed the preparation of large pieces of glass, prisms and the feasibility of optical fibers. Of significance, these grasses have good transmission up to 8 mu m, zero-dispersion at similar to 1.8 mu m and a relative wavelength independence and small magnitude of dispersion in the spectral range 1.8-3.4 mu m.