Glasses, either pure or suitably doped, constitute an excellent material for the development
of integrated optical circuits. A brief review is presented of the most widely used processes …

Rare-earth elements are of interest in several high-tech and environmental application
areas, the two major ones concerning magnetic and optical devices. In the latter field, one …

Silica films with Ln3+-doped LaF3 nanoparticles were prepared by sol gel method and their
luminescent properties were studied as a function of the temperature. Significant …

This paper reports on the sol–gel preparation and structural and optical characterization of
new Er3+-doped SiO2–Nb2O5 nanocomposite planar waveguides. Erbium-doped (100-x) …

Er3+-doped glass-ceramic SiO2–ZrO2 optical planar waveguides were prepared by the sol–
gel route using different SiO2: ZrO2 molar ratios (90: 10, 85: 15, 80: 20 and 75: 25) …

This work reports on the infrared-to-visible CW frequency upconversion from planar
waveguides based on Er3+–Yb3+-doped 100–xSiO2–xTa2O5 obtained by a sol–gel …

This paper reports on the news about refractive index measurements and spectroscopic
features of thin films, which can be applied as optical planar waveguides, focusing on their …

Featured Application The goal of this work is to demonstrate:(1) a reliable fabrication
protocol of monolithic SiO2-SnO2: Er3+ glass-ceramics and (2) the luminescence efficiency …

This work reports on the Yb 3+ ion addition effect on the near infrared emission and infrared-
to-visible up conversion from planar waveguides based on Er 3+–Yb 3+ co-doped Nb 2 O 5 …

An Er3+-doped SiO2: Ta2O5 optical channel waveguide and nanocomposite were prepared
by the sol–gel route at a Si: Ta 50: 50 molar ratio. Channels with an excellent surface profile …