Abstract In this paper, we present a tanh apodized FBG as dispersion compensator in optical fiber communication systems. This grating is integrated hybrid system of four cascaded FBGs with soliton transmission technique. enhances the linewidth light source to get most out per-channel bit rate 9.687 Tbps at temperature 20 °C, relative refractive index difference 0.002, Germania doping ratio 0.2,...

We theoretically characterize the performance of the pairwise correlations (PCs) from multiple quantum correlated beams based on the cascaded four-wave mixing (FWM) processes. The presence of the PCs with quantum corre- lation in these systems can be verified by calculating the degree of intensity difference squeezing for any pair of all the output fields. The quantum correlation characteristic...

A multilevel inverter is capable of generating high-quality stepwise pseudo-sinusoidalvoltage with low THD , applicable to high-power and high-voltage systems. These types of topologiesmay require a large number of switches and power supplies. This leads to much cost, large size, andcomplicated control algorithms. Thus, newer topologies are being proposed to decrease the numberof power electron...

Abstract: This paper presents a clock phase-shifting (CPS) energy balance control (EBC) method for cascaded half-bridge multilevel inverters in standalone solar photovoltaic (PV) systems. It is based on the conservation of energy in each cascaded unit. By shifting the phase of the clock pulse of each cascaded unit, a staircase-like output voltage is obtained. The CPS EBC not only regulates the ...

In this paper, error performance analysis of decode-and-forward (DF)-based cooperative vehicular networks with relay selection is investigated. All of the links in the system are modeled as cascaded Nakagami-m distributed random variables which provide a realistic description of an intervehicular channel. We employ virtual-noise (VN)-based demodulation, maximum likelihood (ML) demodulation, coo...

A high-speed photonic temporal differentiator based on cascaded SOI microring resonators is proposed and experimentally demonstrated in this study. The first-order all-optical differentiation functionality is realized through approaching the critical coupling condition of the cascaded microring resonators. A three-stage double channel side-coupled cascaded microring structure is used to provide...

in this paper, we investigate the parameters affecting total harmonic distortion (thd) and power supply rejection ratio (psrr) in pwm class d amplifiers (cdas) on the basis of linear models with feedback. from our mathematical analysis, we show that the thd of a pwm class d amplifier with feedback can be improved by increasing the gain of the integrator through adding another amplifier at the o...

This paper presents efficient compensated Cascaded Integrator Comb (CIC) decimation filter to improve the passband of interest using redundant signed digit arithmetic. In redundant representations, addition can be carried out in a constant time independent of the word length of the operands. Most of the research in the last decades has concentrated on reducing the delay of addition. A hybrid ad...