Приказано за аутора "Drljača, Branko"
-
Application of software packages for demonstration of physics experiments
Drljača, Branko; Đokić, Boban; Šiljić, Ivan; Kevkić, Tijana; Gulan, Ljiljana (2018-10-07)Veliki broj osnovnih i srednjih škola u Republici Srbiji nije adekvatno opremeljen za izvođenje nastave fizike. Tu se pre svega misli na nedovoljnu opremljenost kabineta za nastavu fizike, kojima često nedostaje oprema za ... -
Calculation of Bandwidth of Multimode Step-Index Polymer Photonic Crystal Fibers
Drljača, Branko; Savović, Svetislav; Kovačević, Milan; Simović, Ana; Kuzmanović, Ljubica; Djordjevich, Alexandar; Min, Rui (MDPI, 2021-12-01)By solving the time-dependent power flow equation, we present a novel approach for evaluating the bandwidth in a multimode step-index polymer photonic crystal fiber (SI PPCF) with a solid core. The bandwidth of such fiber ... -
Calculation of the bandwidth of W-type photonic crystal fibers by time-dependent power flow equation
Kovačević, Milan; Kuzmanović, Ljubica; Simović, Ana; Savović, Svetislav; Drljača, Branko; Djordjevich, Alexandar (Elsevier, 2018-06-30)A multimode photonic crystal fiber with a solid-core takes the characteristic W-shaped index profile upon forming an inner cladding layer with its own value of the effective refractive index corresponding to the distinct ... -
Calculation of the mode coupling coefficient in step-index plastic optical fibers based on the far field measurements
Savović, Svetislav; Djordjevich, Alexandar; Drljača, Branko; Simović, Ana; Min, Rui (Frontiers, 2022-05-25)Using the power flow equation (PFE), this article investigates mode coupling in step-index (SI) multimode (MM) polymer optical fiber (POF). This equation’s coupling coefficient was initially fine-tuned so that it could ... -
Commercial software packages in relation to standard methods of teaching physics in primary education in rural areas of Serbia
Drljača, Branko; Đokić, Boban; Spasić, Dušica (2019-12-19)Na osnovu pregleda najsavremeniji nastavni proces fizike u osnovnim školama svake godine postaje izazovniji. Glavno pitanje je kako pronaći prikladna sredstva za približavanje fizike učenicima. Na fizici primarnog nivoa ... -
A comparative study of two different finite difference methods for solving advection–diffusion reaction equation for modeling exponential traveling wave in heat and mass transfer processes
Savović, Svetislav; Drljača, Branko; Djordjevich, Alexandar (Springer, 2021-10-26)An unconditionally-positive finite difference (UPFD) and the standard explicit finite difference schemes are compared to the analytical solution of the advection–diffusion reaction equation which describes the exponential ... -
Controlling the bandwidth of W-type plastic-clad silica optical fibers
Simović, Ana; Savović, Svetislav; Drljača, Branko; Djordjevich, Alexandar (IOP Publishing, 2019-06-27)A new design of a multimode plastic-clad silica optical fiber that takes the characteristic W-shaped index profile is proposed. The bandwidth and steady-state loss are determined for such a W-type plastic-clad silica ... -
Education in step with modern radon research
Gulan, Ljiljana; Vučković, Biljana; Kevkić, Tijana; Drljača, Branko (2018-10-07)Sistemska merenja koncentracije radona senajčešće izvode na slučajnim uzorcima stambenih objekata. -
Edukacija u korak sa savremenim istraživanjima radona
Gulan, Ljiljana; Vučković, Biljana; Kevkić, Tijana; Drljača, Branko (Društvo fizičara Srbije, Beograd, 2018-10-07)Sistematska merenja koncentracije radona se najčešće izvode na slučajnim uzorcima stambenih objekata. Međutim, škole se mogu pokazati kao pogodniji izbor, jer su uniformno raspoređene po celoj teritoriji područja ili ... -
Enhanced bandwidth of W type plastic optical fibers designed from singly clad step index plastic optical fibers
Simović, Ana; Savović, Svetislav; Drljača, Branko; Djordjevich, Alexandar (Elsevier, 2018-11-02)We propose a multimode W type (doubly clad) plastic optical fiber which takes the characteristic W-shaped index profile designed from a multimode singly clad step index plastic optical fiber upon modification of the cladding ... -
Enhancement of the bandwidth of W-type glass optical fibers in the infrared wavelength region
Simović, Ana; Savović, Svetislav; Drljača, Branko; Djordjevich, Alexandar (Elsevier, 2018-08-28)Transmission characteristics (bandwidth and steady state loss) of multimode W-type glass optical fibers are investigated by solving the time-dependent power flow equation. Results show how the bandwidth in W-type glass ... -
Influence of mode coupling on angular division multiplexing in seven-core plastic optical fibers
Savović, Svetislav; Djordjevich, Alexandar; Simović, Ana; Drljača, Branko (IOP Science, 2020-05-11)We propose an angular division multiplexing in new designed multicore plastic optical fiber with seven cores arranged in a hexagonal array. The influence of mode coupling on two-channel angular division multiplexing ... -
Influence of mode coupling on three spatially multiplexed channels in multimode graded index plastic optical fibers
Svetislav, Savović; Djordjevich, Alexandar; Simović, Ana; Drljača, Branko (IOP Science, 2020-10-27)The influence of mode coupling on three-channel spatial division multiplexing capability in multimode graded index plastic optical fibers is investigated by solving the power flow equation. Our numerical results show ... -
Influence of mode coupling on three, four and five spatially multiplexed channels in multimode step-index plastic optical fibers
Savović, Svetislav; Djordjevich, Alexandar; Simović, Ana; Drljača, Branko (Elsevier, 2018-04-04)We investigate the influence of mode coupling on space division multiplexing capability of three multimode step-index plastic optical fibers with different strengths of mode coupling. Results show that mode coupling ... -
Influence of the Wavelength on the Bandwidth in W-Type Plastic Optical Fibers
Drljača, Branko; Simović, Ana; Djordjevich, Alexandar; Savović, Svetislav (Springer Link, 2021-07-03)We investigate the bandwidth and steady-state losses of multimode W-type plastic optical fibers solving the time-dependent power flow equation and show how the bandwidth in W-type plastic optical fibers can be enhanced ... -
Influence of wavelength on equilibrium mode distribution and steady state distribution in W-type plastic optical fibers
Drljača, Branko; Simović, Ana; Djordjevich, Alexandar; Savović, Svetislav (IOP Science, 2020-05-27)Wavelength dependence of equilibrium mode distribution (EMD) and steady state distribution (SSD) in W-type plastic optical fibers (POFs) is investigated in this paper for parametrically varied width of the fiber’s ... -
Influence of wavelength on the bandwidth of W-type plastic-clad silica optical fibers
Drljača, Branko; Simović, Ana; Djordjevich, Alexandar; Savović, Svetislav (IOP Science, 2020-01-07)The bandwidth and steady-state loss of multimode W-type plastic-clad silica optical fibers are investigated by solving the time-dependent power flow equation. The results show how the bandwidth of W-type plastic-clad ... -
Influence of width of launch beam distribution and mode coupling on transmission characteristics of W-type plastic optical fibers
Drljača, Branko; Simović, Ana; Djordjevich, Alexandar; Min, Rui; Jovanović, Slavica; Savović, Svetislav (IOP Science, 2021-07-16)We show strong effects of width of the launch beam’s angular distribution on bandwidth and mode coupling in W-type plastic optical fibers (POFs). In general, the broader this width, the stronger the coupling and the lower ... -
Infrared wavelength dependence of leaky mode losses and steady state distribution in W-type glass optical fibers
Djordjevich, Alexandar; Simović, Ana; Savović, Svetislav; Drljača, Branko (Elsevier, 2018-03-13)Infrared wavelength dependence of leaky mode losses and steady state distribution (SSD) in W-type glass optical fibers (doubly clad fibers with three layers) is investigated in this paper for parametrically varied ... -
Investigation of bandwidth in multimode graded-index plastic optical fibers
Simović, Ana; Drljača, Branko; Savović, Svetislav; Djordjevich, Alexandar; Min, Rui (Optica Publishing Group, 2021-09-13)A new method is proposed for investigating the bandwidth in multimode graded-index plastic optical fibers (GI POFs). By numerically solving the time-dependent power flow equation, bandwidth is reported for a varied launch ...