title: Thermo-optic tuning and switching in SOI waveguide Fabry-Perot microcavities.
abstract: Compact silicon-on-insulator (SOI) waveguide thermo-optically tunable Fabry-Perot microcavities with silicon/air Bragg mirrors are demonstrated. Quality factors of Q=4,584 are measured with finesse F=82. Tuning is achieved by flowing current directly through the silicon cavity resulting in efficient thermo-optic tuning over 2 nm for less than 50 mW applied electrical power. The high-Q cavities enable fast switching (1.9 mus rise time) at low drive power (<10 mW). By overdriving the device, rise times of 640 ns are obtained. Various device improvements are discussed.
authors: Marcel W
authors: MW
authors: Pruessner
authors: Todd H
authors: TH
authors: Stievater
authors: Mike S
authors: MS
authors: Ferraro
authors: William S
authors: WS
authors: Rabinovich