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We investigated the propagation of shock waves in a prismatic rectangular channel with a horizontal wet bed. Saltwater was used as a Newtonian fluid within the entire channel instead of normal water for representing the different density fluids. It aims to point out seawater where tsunamis occur as an extreme example of shock waves. The shock waves were generated by sudden lifting of a vertical gate...
We examine numerically and experimentally photonic band-gaps in liquid-like two dimensional photonic materials. Subwavelength dielectric rods and holes are randomly placed with Monte Carlo simulations, fabricated on silicon-on-insulator chips, and measured in near infrared wavelengths.
We examine numerically and experimentally photonic band-gaps in liquidlike two dimensional photonic materials. Subwavelength dielectric rods are randomly placed with Monte Carlo simulations, fabricated on silicon-on-insulator chips, and measured in near infrared wavelengths.
We demonstrate chip-scale flat-top filters at near-infrared wavelengths using negative index photonic crystal based Mach Zehnder interferometers. We further show that our approach can be used to design multi-level tunable filters.
We present experimental observations of self-collimation effect in photonic crystal superlattices consisting of photonics crystal region and homogeneous media. The high-resolution near-field scanning optical microscopy is supported by precise nanofabrication, and rigorous 3D-FDTD simulations.
We demonstrate zero phase delay and deterministically tunable zero-n bandgaps in path-averaged zero-index photonic crystal superlattices. Phase differences are measured with integrated Mach-Zehnder interferometers and all measurements agree well with theoretical analysis and simulations.
Integrated chip-scale electrodes allow isolated control of resonances and phases in optical multi-cavity system. By varying the round trip length, destructive and constructive intra-cavity interferences are observed, representing all-optical analogue to electromagnetically-induced-transparency and superradiance on-chip.
We present near-field observations of tuned zero-index bandgaps in photonic crystal superlattices consisting of cascaded negative and positive index media. Supported by precise nanofabrication and experimental measurements, these observed zero-order gaps have potential for wavefront control for arbitrary phase delay lines and open cavity resonances.
We demonstrate 10-Gb/s optical data channels through broadband hitless switches, with open eye-diagrams and error-free operation (BERs less than 10-12). Both through- and drop-ports are measured in the hitless operation for transparent chip-scale optical networks.
We demonstrate tunable temporal delays in coherently-coupled multi-cavity photonic crystals, in analogue to EIT. We report deterministic control of the group delay, up to 7' the single cavity lifetime, in our CMOS-fabricated chip.
We present the integrated chip-scale tuning of multiple photonic crystal cavities. The optimized implementation allows for large tuning (20K/mW), with deterministic resonance control towards all-optical analogue to electromagnetically-induced-transparency on-chip.
We present experimental measurements of tuned zero-n- bandgaps in photonic crystal superlattices supported by precise nanofabrication and rigorous 3D ab initio simulations, these zero-order gaps have potential for wavefront control for arbitrary phase delay lines.
Zero- n bandgap has been observed in photonic superlattices consisting of layered stack of materials with positive index of refraction and photonic crystal slab. An experimental verification of FDTD simulations is reported here.
Zero-n̅ bandgap has been observed in photonic superlattices consisting of layered stack of materials with positive index of refraction and photonic crystal slab. An experimental verification of FDTD simulations is reported here.
Zero-nmacr bandgap has been observed in photonic superlattices consisting of layered stack of materials with positive index of refraction and photonic crystal slab. An experimental verification of FDTD simulations is reported here.
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