We show an accurate procedure to obtain a Fourier transform (FT) with no dc term using a commercial twisted-nematic liquid-crystal display. We focus on the application to holographic storage of binary data pages, where a drastic decrease of the dc term in the FT is highly desirable. Two different codification schemes are considered: binary pi radians phase modulation and hybrid ternary modulati...

A 1.55-μm hybrid integrated wavelengthconverter module was fabricated using a two-channel spot-size converter integrated semiconductor optical amplifier (SS-SOA) on a planar-lightwave-circuit (PLC) platform. Clear eye opening and penalty-free wavelength conversion were obtained at 2.5Gb/s modulation with a wide wavelength difference of 46 nm. The module showed good characteristics including low...

A novel hybrid interference cancellation (IC) scheme is proposed for the uplink of multirate directsequence code division multiple access (DS/CDMA) systems communicating over mobile radio channels. The hybrid IC scheme includes both non-decision directed and decision directed IC, joined together with a modified RAKE combiner for utilization of the diversity. The performance is evaluated via com...

The nonequilibrium total dielectric function lends itself to a simple and general method for calculating the inelastic collision term in the electron Boltzmann equation for scattering from a coupled mode system. Useful applications include scattering from plasmon-polar phonon hybrid modes in modulation doped semiconductor structures. This paper presents numerical methods for including inelastic...

A hybrid pulse width modulation (PWM) theme for the grid electrical converter is investigated, which combines the deserves of space-vector PWM (SVM) and elite harmonic elimination PWM (SHEPWM). SHEPWM is adopted at steady state, while SVM is adopted to reach higher dynamic performance at grid fault. A transition strategy between these two PWM schemes is projected, which achieves sleek and fast ...

Several hybrid tomographic methods utilizing ultrasound modulation have been introduced lately. Success of these methods hinges on the feasibility of focusing ultrasound waves at an arbitrary point of interest. Such focusing, however, is difficult to achieve in practice. We thus propose a way to avoid the use of focused waves through what we call synthetic focusing, i.e. by reconstructing the w...

This paper presents a multi-input single-phase grid-connected inverter for a hybrid photovoltaic (PV)/wind power system, integrated with basic and advanced functions developed by the authors. To achieve high quality current and fast dynamic response to inherent variations of hybrid renewable energy sources, an improved space vector pulse-width-modulation (PWM) based predictive current control a...

A hierarchical N-doped carbon nanotube-graphene hybrid nanostructure (NCNT-GHN), in which the graphene layers are distributed inside the CNT inner cavities, was designed to effi ciently support noble metal (e.g., PtRu) nanoparticles. Well-dispersed PtRu nanoparticles with diameters of 2–4 nm were immobilized onto these NCNT-GHN supports by a low-temperature chemical reduction method without any...

We report a hybrid secure communication of continuous-variable quantum key distribution (CV-QKD) and quadrature amplitude modulation/quantum noise stream cipher (QAM/QNSC). In QAM/QNSC a coherent multi-level optical signal is hidden in quantum noise. We demonstrated 70 Gbit/s on-line QAM/QNSC transmission over 100 km using an FPGA-based transmission and receiver, where secure keys are delivered...