A. L. Osipov and S. N. Anoshkin
The Institute of Applied Information Science of The Novosibirsk State University of Economics and Management Novosibirsk E-mail: osipov@nsaem.ru
Pages: 55-60 Subsection: MODELING IN PHYSICAL AND TECHNICAL RESEARCH
A computer system modeling the effectiveness function by results of independent tests based on the nonparametric kernel regression estimate method is developed.
O. L. Golovkov and E. I. Chernov
The Ryazan State University Ryazan E-mail: fanasm@rambler.ru
Pages: 61-66 Subsection: MODELING IN PHYSICAL AND TECHNICAL RESEARCH
D. L. Golovashkin and N. L. Kazanskii
Institute of Image Processing Systems, RAS, Samar Korolev Samara State Aerospace University, Samara E-mail: kazansky@smr.ru
Pages: 67-73 Subsection: MODELING IN PHYSICAL AND TECHNICAL RESEARCH
Numerical formulation of the incident wave source conditions for a domain enclosed in a nonuniform envelope within the scope of the TF/SF technique (Total-Field/Scattering- Field technique) is proposed. This approach is compared with a traditional analytical approach to defining the incident wave source conditions. Benefits of the approach are shown.
D. Yu. Protasov, S. A. Dvoretsky, V. Ya. Kostyuchenko*, V. S. Krylov*, N. N. Mikhailov and R. N. Smirnov
Institute of Semiconductor Physics, SB RAS, Novosibirs E-mail: protasov@thermo.isp.nsc.ru *Siberian State Geodesic Academy, Novosibirsk
Pages: 74-79 Subsection: OPTICAL INFORMATION TECHNOLOGIES, ELEMENTS, AND SYSTEMS
A. V. Tsarev and E. A. Kolosovsky
Institute of Semiconductor Physics, SB RAS Novosibirsk E-mail: tsarev@isp.nsc.ru
Pages: 80-89 Subsection: MODELING IN PHYSICAL AND TECHNICAL RESEARCH
Results of numerical modeling a new type of acousto-optic (AO) filters employing multibeam expanders are discussed. A planar filter design in thin m) optical waveguides of chalcogenide glass on lithium niobate is proposed. Analysis of the devices is carried out in a spectral approach with application of numerical experiments by the finite-difference time domain (FDTD) method. It is shown that the proposed multi-reflector optical elements possess high dispersion properties such that the AO filter with a small size (below 0.1 cm) ensures a record thin linewidth (~1 nm) at a wavelength of 1.54 m, a tuning range greater than 40 nm, and a switching time of less than 2 s. In addition, the normalized linewidth per unit length of the device is 20 times better than the theoretical limit for available types of AO filters developed on the same substrate and by a common technology but without multibeam expanders.
V. A. Komotskii, V .I. Korolkov, and Yu. M. Sokolov
Peoples Friendship University of Russia Moscow vkomotskii@sci.pfu.edu.ru
Pages: 90-95 Subsection: MODELING IN PHYSICAL AND TECHNICAL RESEARCH
An improved optoelectronic small linear displacement sensor based on laser beam diffraction on two phase diffraction gratings is proposed and investigated. The possibility of doubling the region of linearity while detecting signals in the first two diffraction orders is shown. A device for measuring surface irregularities is designed using this sensor. Experiments on measuring surface profiles of relief structures are carried out.
Yu. N. Kulchin, O. B. Vitrik, and A. V. Dyshlyuk
Institute of Automation and Control Processes, FEB RAS Vladivostok E-mail: kulchin@hq.febras.ru
Pages: 96-100 Subsection: MODELING IN PHYSICAL AND TECHNICAL RESEARCH
A stabilized fiber optic sensor for remote measuring the angle of object inclination from the vertical has been developed. The measurement principle is based on beam refraction by a transparent free hanging plane-parallel plate as the angular orientation of the sensitive element case changes. Output signal stabilization is assured by using two spatially separated measuring channels.
D.N.Pridachin, Yu.G.Sidorov, M.V.Yakushev, and V.A.Shvets
Novosibirsk
Pages: 91-99 Subsection: PHYSICAL AND TECHNICAL PRINCIPLES OF MICRO- AND OPTOELECTRONICS
The initial stages of formation of ZnTe epitaxial films on Si(013) : As are investigated by ellipsometry, reflection high-energy electron diffraction (RHEED), and electron Auger spectroscopy. It is shown that the kinetics of ZnTe film growth is described by the crystal nucleation and growth model. The temperature dependence of the nucleation rate J is adequately approximated by a straight line in the coordinates ; this evidences the limiting role of critical nucleus dimension formation. The calculated increase of the surface energy while ZnTe nucleating is 40 erg/cm. The estimated value of the pure ZnTe(001) surface energy is 490 erg/cm. The difference between two energy values can be caused by adsorption of the deposited material components, which reduces the excess energy of the surface increasing process.
The problem of detecting point dynamic objects is considered for new conditions of registering a sequence of images that differ by the presence of projective stationary background distortions. Algorithms for processing such sequences are presented. Results of experiments on investigating the influence of the input actions and the registration noise on the object detection probability are given.
A regression model with correlated observations of responses is considered. The groups of correlated observations have a multivariate distribution (Student