Photoinduced grating in B2O3 containing glass

摘要

Boron containing glasses are sensitive to radiation in the band 225-275 nm and therefore, B2O3 glasses are particularly adapted to receive refractive index modulation, e.g., to make reflection gratings. Glasses containing SiO2 and B2O3 are particularly suitable when the grating is to be localized in the cladding of a fibre. Glasses containing SiO2, GeO2 and B2O3 are suitable when the grating is in the path region of a waveguide, e.g., in the core of a fibre.