ABSTRACTS

摘要

It is difficult to realize a compact optical switch matrix because an available material index change in thermo-optic and plasma effects is limited below 1%. Slowing light enables us to miniaturize optical devices due to large equivalent index changes. We demonstrated a reflection-type switch with slowing light in a Bragg reflector waveguide. Input light is reflected at the off-state due to an equivalent index difference between an oxide aperture and an oxide region, while it passes through at the on-state since the equivalent index difference is compensated using carrier injection. We obtained a large bending angle of 30 degrees with an extinction ratio of over 15 dB due to an enhanced equivalent index change by slowing light.