Laboratory for the Nonlinear Optics of Waveguide Systems

• We have created models of nonlinear spatiotemporal dynamics of multi-mode systems and tested the models in specific tasks
• Our team has analyzed nonlinear coherent structures propagating in multi-mode optic fibers; we have found and examined the beam self-cleaning effect
• We have created an experimental base and developed methods for measuring spatiotemporal and spectral dynamics in multi-mode and multi-core fibers and fiber lasers, and sensor systems
• We have created the basis for nonlinear information theory in multi-mode fibers
• Physical principles have been developed for femtosecond modification and forming periodical structures of refractive index in multi-mode and multi-core fibers, first samples have been tested
• Experimental approaches for simultaneous registering of spatiotemporal and spationspectral dynamics in multi-mode and multi-core fibers have been created
• We have created software for quantitative analysis of system of solutions of systems of nonlinear equations accounting for noises and describing propagation in multi-mode fibers
• Methods of characterization of written structures in multi-mode fibers have been created

Implemented results of research:

Our Laboratory has created the «MulModN-1» software complex for quantitative analysis for solutions of systems of nonlinear equations accounting for noise that describe propagation of signal in multi-mode fibers. The complex is used in designing multi-mode information transmission systems and examining nonlinear effects in signal propagation

Education and career development:

• We participated in the Complexity in Nonlinear Photonics conference (Italy, 2017). S. Wabnitz and D.V. Churkin helped with organizing the event, E.V. Podlivilov, S.A. Babin read lectures and D. Bochek was one of attendants.
• Our team has developed and implemented a study course in nonlinear optics
• Our leading scientist has read 6 lectures for undergraduate and postgraduate students – participants of the project

Organizational and structural changes:

• A scientific and educational center for automatics and fiber optics has been launched on the base of the laboratory in collaboration with Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences (Russia). The laboratory is also completing a contract with «Femtotech»

Other results:

• Our employees have delivered 6 keynotes at conference, in 4 cases our researchers were invited speakers
• We have published 8 articles and a monograph on the topic of our project, 2 publications have been accepted for printing
• The leading scientist has prepared monograph in collaboration with employees of laboratory

Collaborations:

• Rome Institute for Complex Systems (Italy): a joint grant for study of random generation in multi-mode optics
• Paris Diderot University (France): preparing a joint grant application for research of multi-mode nanoresonators
• University of Brescia (Italy): collaboration in enhancing the test bench for observation of self-cleaning effect in large diameter fibers. We have also measured distributions of intensities for various thickness of beam
• Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences (Russia): we have developed physical principles of femtosecond and modification and formation of periodical structures of refraction rates in multi-mode and multi-core fibers
• «Femtotech» (Russia): research of stability of parameters of femtosecond modification and formation of periodical structures of refraction rates in various waveguides