Signal optimization is affected during radio links between a transmitter and a receiver located in adjacent material media with differing optical densities. The optimization is carried out via the automated control theory method. The radio signal obtained after the optimization is coordinated with the two media's electrical characteristics simultaneously; and this enables low power and small an...

Photonic crystal fiber has a special light guiding mechanism and structural tunability, which can produce singular dispersion characteristics high nonlinearity, provides new conditions for the research in field of nonlinear optics. Due to combined action variety optical effects, photonic fibres with different parameters transmission rich spectra under pump pulse parameters. We use cladding sect...

Optical coupling loss and alignment tolerance between SOI waveguides and laser diodes were investigated. It was found that the minimum optical coupling loss was about 1.6 dB and alignment tolerance was about ±0.7 μm. An optical input/output interface for optical fibers was also proposed and investigated the coupling loss characteristics.

Density Functional Theory (DFT) calculations were employed to investigate the structural characteristics, electronic properties, and nonlinear optical properties of Benzyne-Based Chromophores at B3LYP/6-31G(d,p) level. The effects on the hyperpolarizabilities of various donor and acceptor substituent (H, F, Cl, Br, Me, NH2, OH, NH3+, COOH, CHO, CN, NO,NO2 ) were studied. The results reveale...