ZnSe-ZnSSe electro-optic waveguide modulators

Abstract
Rib waveguides have been fabricated in the ZnSe-ZnSSe material system, grown by molecular beam epitaxy on GaAs substrates. Using Schottky barrier contacts, rib-waveguide optical phase modulators have been demonstrated and the strength of the linear electro-optic (Pockels) effect has been measured. A change in the index of refraction of Δn/ΔF=±1.7×10−9 cm/V has been attained for 633 nm light. This translates to a maximum Δn of 0.0008. Rib waveguides with losses as low as 0.66 cm−1 have been measured.