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A 1 μm-long hybrid Si-VO2 electroabsorption switch with integrated electrical contacts is demonstrated. A record extinction ratio of ∼12 dB/μm is achieved over a bandwidth of ∼100 nm with a power dissipation of 2.55 mW.
We present metallic gratings on a VO2 film with electrical control of the transmission spectrum. The extraordinary optical transmission was tunable by up to a factor of 2.75X to achieve an extinction ratio of 26 dB/μm.
Vanadium dioxide (VO2) exhibits a large refractive index change in the infrared wavelength range across an insulator-metal phase transition. Combining these material properties with careful photonic design leads to optoelectronic devices with performance that cannot be easily matched by standard optical materials. We describe ultra-compact modulators and photodetectors, as well as highly reconfigurable...
Si3N4-on-SOI and VO2-on-SOI integrated photonic devices and circuits, including an ultra-broadband and efficient grating coupler, adiabatic polarization rotator splitters, and wavelength-scale modulators, are described. Hybrid integration enables functionalities not attainable in each material separately.
Following the idea of optical analogy to electronic systems, harmonic oscillations are spatially mimicked in waveguide arrays. We study and demonstrate the oscillations of light in AlGaAs waveguide arrays,
We measured the current-voltage and infrared optical transmission characteristics of thin film VO2 wires over the metal-insulator phase transition. The phase transition had electrical or thermal characteristics depending on the wire geometry and applied current.
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