Waveguides have been fabricated by a hybrid organicinorganic glass sol-gel process and ultraviolet-light exposure. The adjustment of chemical composition of the materials provides precise selection ofthe refractive index from 1.48 to 1.52 at the wavelength of 632.8 nm. The effect of ultraviolet-lightexposure and heat treatment on the refractive index is studied. Ultraviolet-light inscription has beenemployed to produce ridge waveguides with smooth sidewalls.
展开▼
