Light modulation employing single crystal optical waveguides of niobium- doped lithium tantalate

摘要

An optical waveguide of niobium-doped lithium tantalate single crystal has excellent low loss waveguiding properties with strong electro- optic behavior. The waveguides are made by depositing a film of niobium on a polished lithium tantalate crystal, annealing the crystal so as to diffuse the niobium into the crystal and cooling the crystal.