Back Cover: Thin film optimization design of organic–inorganic hybrids for waveguide high‐rejection optical filters (Phys. Status Solidi RRL 8/2011)

Abstract

Carlos M. S. Vicente et al. (see pp. 280–282) have fabricated high-rejection optical filters based on first-order Bragg gratings which were inscribed in channel waveguides through UV-laser writing in transparent, low surface roughness (<0.1 nm), and low-loss (1.5 ± 0.2 dB cm–1, 532 nm) thin films of organic–inorganic hybrids with controlled refractive index values stable under aging. The high-rejection figure of merit (∼24 dB) of these optical filters is the best value found until now for organic–inorganic hybrids, reinforcing the potential of sol–gel technology in the fabrication of cost-effective integrated optics devices for the next generation of optical networks.