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Saratov State Technical University
- ICT-2009.3.5 Photonic components and subsystems
Date of filling in
Saratov State Technical University
Polytechnicheskaya st, 77, 410054, Saratov, Russia
Department of Applied Information Technologies
Gennady Pilnov – representative of Institute of Semiconductor Physics in ISTOK-SOYUZ project (http://www.istok-soyuz.eu/index.php/call-for-proposals)
Information and Communication Technologies (ICT)
ICT-2009.3.5 Photonic components and subsystems
Short description of the organization (max 12 lines):
The department of SSTU which will be directly involved into the work is the laboratory of distributed computations in radiophysics and electrodynamics. The laboratory was founded in 2007 year as a part of SSTU. The head of the laboratory is Alexander Brovko. The laboratory is conducting researches together with EU and USA partners in the fields of computational electromagnetis, microwave imaging, modeling of the processes of microwave sintering of nano-structured materials.
Team is interesting in integration into existent consortia
Team’s Expertise Title: Theoretical investigation and numerical modelling of the electromagnetic waves excitation, propagation, and diffraction processes in open waveguides and resonators in the terahertz and optical ranges
Type Details: Participants of the team perform investigations in the theory of open electromagnetic structures.
The principal results are the following. A theory of open homogeneous and periodic waveguides excitation, based on the formalism of Heisenberg's scattering matrix, has been developed. General properties of leaky modes in open waveguides have been studied, including orthogonality conditions, asymptotic features, etc. Open electromagnetic structures, guiding the leaky modes with extremely small radiation losses (for terahertz and optical ranges) have been firstly proposed and theoretically investigated. Such systems are widely studied in recent years, and known as multilayered Bragg fibers. New methods for the analysis of the eigenmodes of the open dielectric waveguides (such as the photon crystals and microstructured fibers) have been developed. In particular, the adaptive collocation method and new versions of the finite element method has been developed. A set of the analytical and numerical methods for the investigation of the diffraction of the guided and leaky modes on discontinuities in open electromagnetic structures has been developed. The methods are based on precisely solved models, variation approaches, and finite element and finite differences methods. The FDTD method for the description of the wave scattering on the discontinuities of open waveguides and for modelling of the complex dynamics regimes during the propagation of the wave beams along open dielectric resonators and waveguides has been developed. The methods for the solution of the inverse electromagnetic problems, based on the application of artificial neural networks, have been developed.
SUMMARY: The approaches derived can be applied to solve different problems, including the analysis and design of the elements of microwave devices and integrated optics systems (including nonlinear structures).
eigenmodes improper modes open waveguides numerical methods finite elements
Publications on the topic (other references)
A.V. Brovko, E.K. Murphy, and V.V. Yakovlev (2009), Waveguide microwave imaging: neural netwrok reconstruction of functional 2-D permittivity profiles, IEEE Trans. Microwave Theory Tech., vol. 57, No 2, pp. 406-414.
A.V. Brovko, E.K. Murphy, M. Rother, H.P. Schuchmann and V.V. Yakovlev (2008), Waveguide microwave imaging: spherical inclusion in a dielectric sample, IEEE Microwave and Wireless Comp. Lett., vol. 18, No 9, pp. 647-649.
Eliseev M.V., Rozhnev A.G., Manenkov A.B. (2005) Guided and Leaky Modes of Complex Waveguide Structures // Journal of Lightwave Technology. V. 23. No 8, pp. 2586-2594.
Manenkov A.B., Gerolymatos P.G., Tigelis I.G.,Amditis A.J. (2007) Effects of metal irises on the guided-mode properties in asymmetrical slab waveguides // Optics Communications, V. 274, pp. 333-340.
Koukoutsaki P.A., Dasyras N.F. Tigelis I.G., Manenkov A.B., Amditis A.J. (2007) Influence of the refractive index core profile on modal scattering of terminated two-dimensional waveguides // Journal of the Optical Society of America, A, V. 24, No 6, pp. 1752-1760
Description of previous and present experience in International Cooperation
1. Comprehensive Electromagnetic-Thermal-Structural Model for Microwave Sintering of Particulate Materials. Joint project under EADS grant. The European participants of the project are Institut Polytechnique de Grenoble and Swiss Federal Laboratories for Materials Science and Technology (EMPA).
2. Development of the new method for permittivity profile reconstruction, based on FDTD electromagnetic analysis and application of artificial neural network. Joint project with University of Karlsruhe, Germany.
3. Reconstruction of the statistical parameters of the non-uniform materials with FDTD modeling and neural network optimization. Joint project with University of Karlsruhe, Germany. 4. Development of a numerical model for microwave sintering equipment. Joint project with Swiss Federal Laboratories for Materials Science and Technology (EMPA), Switzerland
Previous participation in EU’s Framework Programme projects
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