Main result:
The realization of a free space optical communication system in which the information is encoded by the means of orbital angular momentum of the optical vortex configurations
Specific results:
Realization of high quality diffractive optical elements (spiral phases and computer generated holograms) for generating and sorting optical vortex configurations with well defined orbital angular momentum. These components will be realized by electron beam lithography.
Realization and testing of the functional model and investigation of the scalability of this system in terms of number of phase plates and the orbital angular momentum, as well as the robustness of the communications to the atmospheric turbulence.
Scientific report (in Romanian)
- Raport stiintific 2016 [...]
- Raport stiintific 2015 [...]
- Raport stiintific 2014 [...]
- Raport stiintific 2012 [...]
| In aceasta etapa s-au realizat prin tehnici de micro si nanofabricatie elemente optice difractive care permit detectia eficienta vortexurilor optice. Aceste elemente au fost caracterizate atat morfologic cat si functional, rezultatele indicand calitatea si functionalitatea acestora. Modelul functional al comunicatorului optic prin spatiu liber a fost demonstrat prin realizarea suprapunerii a doua vortexuri optice modulate independent in fasciculul de iesire. S-a investigat, deasemenea, posibilitatea obtinerii de superpozitie de vortexuri in acelasi fascicul cu ajutorul unei singure holograme in vederea obtinerii unui communicator optic cu modulatie static. In final, s-a demonstrat functionalitatea modulelor electronice care permit comunicarea optica in spatiu liber cu un transfer de informative de 1Gb/s. S-a realizat interfata acestor module cu computerul. [...mai multe detalii] |  |
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Raport stiintific 2013 [...]
PAPERS:
2016
- L. Preda “Splitting and accelerating Gaussian beam modulated by Mittag Leffler function” Optik 127, 3, 1066 (2016)
- R. Tudor, M. Mihailescu, I. A. Paun, C.Kusko “Simultaneous and spatially separated detection of multiple orbital angular momentum states” Optics Communications Optics Communications 368, 141 (2016)
- R. Tudor Independent optical vortices in free-space optical communications 2016 International Semiconductor Conference (CAS) IEEE DOI: 10.1109/SMICND.2016.7783032
- E. Scarlat, M. Mihailescu, R. Tudor, Rebeca, I.A. Paun, “The propagation of multiple optical vortices through atmospheric turbulences”, 16th International Balkan Workshop on Applied Physics and Materials Science (2016)
- M. Mihailescu, R. Tudor,I. A Paun, C. Kusko, E. Scarlat, M. Kusko “Optical Vortex in Asymmetric Arcs of Rotating Intensity” Book of abstracts 18th International Conference on Optics and Photonics, 13-15 iulie 2016, Stockholm, Sweden
- R. Tudor , M. Kusko and C. Kusko “Generation of optical vortices in an integrated optical circuit”, J. Opt. 19 095801 (2017)
2015
- R. Tudor, C. Kusko, M. Kusko, M. Mihailescu, A. Avram “Independent optical vortices in free-space optical communications” 2016 International Semiconductor Conference (CAS) IEEEDOI: 10.1109/SMICND.2016.7783032
- R. Tudor Independent optical vortices in ON-OFF key free space optical communications, Conferinta internationala RTUWO 2015 „Advances in Wireless and Optical Communications”
- R.Tudor, M. Mihailescu, I. A. Paun, A. E. Nan , M. Kusko , C. Kusko “Propagation Robustness Of Two Laguerre-Gauss Beam R. Tudor Proceedings Of The Romanian Academy” Proceedings Of The Romanian Academy, Series A 17, 3, 222 (2016)
2014
- Independent and combined information transfer from axicon and helical phase distributions Mona Mihailescu, Liliana Preda, and Cristian Kusko, Applied Optics, Vol. 53, Issue 21, pp. 4691-4699 (2014)
- Optical information transfer based on helico-conical laser beams, M. Mihailescu ; C. Kusko; L. Preda, Proc. SPIE 9194, Laser Beam Shaping XV, 919406 (September 25, 2014)
- Diffraction patterns from holographic masks generated using combined axicon and helical phase distributions, M. Mihailescu, L. Preda, C. Kusko, E. I. Scarlat, International Conference "Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies, Constanta, Romania, 21-24 aug. 2014.
- Fabrication of spiral phase plates for optical vortices Rebeca Tudor , Mihai Kusko, Cristian Kusko, Florea Craciunoiu, Andrei Avram, Dan Vasilache CAS Proceedings 2014, vol I, pg 139-142
- Realization of spiral phase plates by 3D lithography; Roxana Tomescu, Adrian Dinescu, Dana Cristea, Mihai Kusko, Raluca Gavrila, Cristian Kusko, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies – 2014 Conference, SPIE Proceedings, 2014
- R. Tudor, M. Kusko, C. Kusko, F. Craciunoiu, A. Avram, D. Vasilache, A. Dinescu, “Beam Shaping For Phase Singularities”, Romanian Journal Of Information Science And Technology 17, 4, 2014, 389 (2014)
2013
- M. Mihailescu, L. Preda, A. Gheorghiu, M. Kusko, O. Curcan and C. Kusko, ”Asymmetric Diffraction Orders Based on Axicon and Helical Phase Combination” CLEO-PR & OECC/PS 2013 -The 10th Conference on Lasers and Electro-Optics Pacific Rim(CLEO-PR 2013); The 18th OptoElectronics and Communications Conference (OECC 2013) Kyoto, Japan. Electronic ISBN:978-1-4673-6476-8