Martin Grábner, Ph.D.

Research interests: 

Numerical modelling of electromagnetic wave propagation in optical waveguides, Propagation of electromagnetic waves in atmosphere

Professional activities: 

2019 - today: Institute of Photonics and Electronics, Czech Academy of Sciences - research scientist

2008 - 2019: Czech Metrology Institute (CMI) - research scientist

2000 - 2008: Technical Centre of Telecommunications and Posts (TESTCOM) - research & development engineer

Education:

2008: Ph.D. - Faculty of Electrical Engineering, Czech Technical University in Prague; Doctoral thesis: “Identification of parameters of nonlinear HEMT model from the system of scattering parameters” (in Czech) 

2000: Ing. - Faculty of Electrical Engineering, Czech Technical University in Prague, master degree

Current Research projects:

Member of the projects:

• Research of novel geometries and layouts of double-clad rare-earth-doped fibers for high power fiber lasers

Selected past projects:

Co-solver:

GAČR 17-16389S, Hydrological estimates from radiowave propagation in terrestrial microwave network,

GAČR 14-01527S, Basic research of propagation of electromagnetic waves in the atmospheric boundary layer for low elevation links,

GAČR P102/11/1376, Effects of propagation impairments on error performance of future broadband terrestrial wireless systems,

GAČR P102/10/1901, Basic research of radiometeorology properties of tropospheric ducting layers by using artificial intelligence methods,

GAČR P102/07/0955, Research of electromagnetic wave refraction and refractivity height profiles in troposphere,

Team member:

GAČR 102/05/0571, Methods for availability improvement of free space optics communications,

COST IC0802, COST 297, COST 280

Publications:

Selected journal/conference papers:

1. F. Todorov, J. Aubrecht, P. Peterka, O. Schreiber, A. A. Jasim, J. Mrázek, O. Podrazký, M. Kamrádek, N. Kanagaraj, M. Grábner, Y. Baravets, J. Cajzl, P. Koška, A. Fišar, I. Kašík, P. Honzátko "Active Optical Fibers and Components for Fiber Lasers Emitting in the 2-μm Spectral Range", Materials, 13, 5177 (2020). Link.
2. M. Grabner, P. Pechac, P. Valtr: “Analysis of Propagation of Electromagnetic Waves in Atmospheric Hydrometeors on Low-Elevation Paths”, Radioengineering 27 (1), 29-33, 2018.
3. M. Grabner, P. Pechac, P. Valtr: “On horizontal distribution of vertical gradient of atmospheric refractivity”, Atmospheric Science Letters 18 (7), 294-299, 2017.
4. M. Grabner, V. Kvicera: “Multiple scattering in rain and fog on free-space optical links”, Journal of lightwave technology 32 (3), 513-520, 2014.
5. M. Grabner, V. Kvicera, P. Pechac, M. Kvicera, P. Valtr, A. Martellucci: “World maps of atmospheric refractivity statistics”, IEEE Transactions on Antennas and Propagation 62 (7), 3714-3722, 2014.
6. M. Grabner, V. Kvicera, O. Fiser: “Rain attenuation measurement and prediction on parallel 860-nm free space optical and 58-GHz millimeter-wave paths”, Optical Engineering 51 (3), 031206, 2012.
7. M. Grabner, V. Kvicera: “Measurement of the structure constant of refractivity at optical wavelengths using a Scintillometer”, Radioengineering 21 (1), 455-458, 2012.
8. M. Grabner, V. Kvicera: “The wavelength dependent model of extinction in fog and haze for free space optical communication”, Optics express 19 (4), 3379-3386, 2011.
9. M. Grabner, V. Kvicera: “Atmospheric refraction and propagation in lower troposphere”, chapter 7 in Electromagnetic Waves, INTECH, 139-156, 2011.
10. M. Grabner, V. Kvicera, P. Pechac, O. Jicha: “Vertical dependence of refractive index structure constant in lowest troposphere”, IEEE Antennas and Wireless Propagation Letters 10, 1473-1475, 2011.
11. M. Grabner, J. Dobes: “Parameter extraction of HEMT models from multibias s-parameters”, in Proc. of IEEE International Symposium on Circuits and Systems (ISCAS), 2085 – 2088, 2009.
12. M. Grabner, V. Kvicera: “Refractive index measurements in the lowest troposphere in the Czech Republic”, Journal of atmospheric and solar-terrestrial physics 68 (12), 1334-1339, 2006.
13. M. Grabner, U.-C. Fiebig, V. Kvičera: “Generator of Time Series of Rain Attenuation: Results of Parameter Extraction”, Radioengineering 14 (1), 32-36, 2005.
14. M. Grabner, V. Kvicera: “Clear-air propagation modeling using parabolic equation method”, Radioengineering 12 (4), 50-54, 2003.
15. M. Grabner, V. Kvicera: “Refractive index measurement at TV tower Prague”, Radioengineering 12 (1), 5-7, 2003.