Optics Express · 2007 · 120 citations · 13 references
Silicon/air Bragg MirrorsPhotonicsEngineeringOptical PropertiesWavelength TuningSilicon On InsulatorApplied PhysicsPlanar Waveguide SensorGuided-wave OpticOptical SwitchingPhotonic Integrated CircuitMicro-optical ComponentThermo-optic TuningMicroelectronicsPhotonic DeviceOptoelectronicsCompact Silicon-on-insulatorSilicon Cavity
The study discusses various device improvements. Tuning is achieved by passing current through the silicon cavity, enabling 2 nm thermo‑optic tuning with under 50 mW power. The demonstrated SOI waveguide microcavities achieve Q = 4,584, finesse 82, and enable fast switching with 1.9 µs rise time at <10 mW and 640 ns when overdriven.
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.
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Electrooptical effects in silicon
Richard Soref, B. R. Bennett · IEEE Journal of Quantum Electronics · 1987 · 2.6K citations
Thermo-optical modulation at 1.5μm in silicon etalon
G. Cocorullo, Ivo Rendina · Electronics Letters · 1992 · 252 citations