New thermal stabilizing control of acousto-optic tunable filter using digital feedback technique

Abstract

Over the last few years, electro-optic (EO) polymers have reached the state of technological maturity where devices for practical applications become feasible. For example, polymers with EO coefficients stable up to 300°C' and r33 coefficients of 55 pm/V2 have been discovered recently. The ease with which polymers can be processed into multilayer devices by standard Si processing techniques makes them attractive for optoelec-