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This study compares the experimental results of absorption and refractive index of a probe laser measured in a strongly driven two-level atom with the results measured in a degenerate two-level system using pump-probe spectroscopy. This work demonstrates the possibility of realization an anomalous dispersive transparent medium using the strongly driven 4s21S0 - 4s4p 1P1 Ca transition. Absorption...
Dispersion control and active materials integration have yielded plasmonic components including i) three-dimensional single layer plasmonic metamaterials ii) all-optical, electro-optic and field effect modulation of plasmon propagation iii) plasmon-enhanced absorption in solar cells.
We propose a novel optical switch with slowing light in Bragg reflector waveguide. Slowing light gives us large equivalent refractive index change due to its waveguide dispersion, which permits 90-degree bend of crossbar optical switches.
Multiple-focal-plane spatial phase retrieval for a chirped-pulse-amplification laser is demonstrated for the first time. Advantages of this method are simplicity of setup, ability to measure angular dispersion, and potential integration into precision, on-shot focal-spot diagnostics.
We present the first full theoretical and numerical analysis of the influence of the waveguide geometry and intrinsic material frequency dispersion of the nonlinearity, on the Si wires effective third-order nonlinearity and its frequency dispersion.
We obtain expressions for the GVD and TOD of reflection grism compressors for compensating material dispersion, and provide useful approximations for practical grism designs.
Cascaded over- and under-coupled resonators (COUR) result in slow light followed by fast light. COUR can be used as a notch filter and phase modulator that overcomes the trade-offs of extinction-ratio-group-delay and sensitivity-bandwidth.
We propose a design method for a tunable time-delay element based on the eye-diagram metrics of a system. Two approaches using dispersion management are given, and both show improved fractional delay with high data fidelity.
We demonstrate tunable optical delays of 10 Gbit/s data pulses over a total range of 12 ns using a combination of wavelength conversion via four-wave-mixing on a silicon chip and a dispersive element.
We report on fabricated all-solid fibers which guide by a combination of bandgap and TIR mechanisms. The fibers show high birefringence and possess a dispersion characteristic similar to the pure bandgap guiding form.
We demonstrate room-temperature phase matching of second-harmonic generation by waveguide dispersion (WGD) in 3-mum-thick LiNbO3 membranes. The membranes were made using patterned deep-ion-implantation-guided etching.
We study the evolution of defect states from the band-edges of a 2D photonic crystal. A simple exponential relation is derived for the dispersion of the state, and we investigate the connection with Bloch modes.
We demonstrate highly efficient continuous-wave-based four-wave mixing beyond a small signal approximation. This is achieved in a high-finesse cavity with controlled dispersion for phase-matched interaction.
We show that evolutions of optical noise on the background of a strongly nonlinear signal pulse are similar in Mamyshev-type regenerators employing maps with either normal or anomalous average dispersion.
We numerically analyze supercontinuum generation in a long length of tapered PCF to understand the soliton trapping dynamics leading to the enhanced Blue/UV supercontinuum recently achieved experimentally in such fibers.
We show that the propagation of optical beams inside three-dimensional photonic crystals can be efficiently described by an approximate scalar diffraction model. The main advantage of this model is that it reduces the memory and computation time for direct simulations of three-dimensional photonic crystals by converting the problem into an equivalent problem for which simple geometrical optics can...
Thermo-optic constants for RbTiOPO4 were measured from 20 to 120degC in the 0.532-1.571 mum range. The Sellmeier and thermo-optic dispersion formulas that reproduce well the phase-matching conditions for normal and periodically poled crystals are presented.
We demonstrate 40-GS/s all-optical wavelength division sampling using four-wave mixing in a dispersion-flattened photonic crystal fiber. Our 4x10-GHz time- and wavelength-interleaved sampling laser source is generated through multiwavelength cross-absorption modulation and optical dispersion management.
Numerical simulations and experiments are performed to investigate the use of thin conformal silicon nitride cladding layers to engineer the dispersion properties of silicon nanophotonic waveguides.
The optical spectrum and modulation response of wavelength-locked lasers are analyzed. The model is verified against WDM-PON system data. A maximum data rate resulting from a trade-off of chromatic dispersion and modulation damping is predicted.
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