Hypersensitization of rare-earth-doped waveguides for distributed-feedback amplifier and laser applications

摘要

Deterioration of the gain coefficient as a result of UV processing of hydrogen-loaded Er~(3+)-and Er~(3+)/Yb~(3+)-doped silicate optical waveguides can be reduced by initial hypersensitization of the waveguide prior to bulk irradiation. This allows improved performance in active-grating devices such as distributed-feedback fiber amplifiers and lasers.