Refractive index and density of fluorine doped silica prepared by the PCVD process

Abstract

Experimental data on the density, the refractive index and the material dispersion derived therefrom are presented for fluorine doped PCVD- (plasma activated chemical vapour deposition-) silica. Both density and refractive index decrease linearly with increasing doping concentration. Comparison of the refractive index depression in PCVD glass and data published for F-doped glasses prepared by other techniques reveal some discrepancies. The influence of small amounts of chlorine in the silica network on the refractive index and on the dispersion is also considered.