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Your search keyword '"Beresna, M."' showing total 6 results
Start Over Author "Beresna, M." Topic optoelectronics
6 results on '"Beresna, M."'

1. DIRECT EXTRUSION OF HOLLOW-CORE MICROSTRUCTURED POLYMER OPTICAL FIBER FROM 3D PRINTER.

Author

Talataisong, W., Rutirawut, T., Ismaeel, R., Beresna, M., and Brambilla, G.

Subjects
OPTICAL fibers, MICROSTRUCTURE, ACRYLONITRILE butadiene styrene resins, PLASTIC extrusion, OPTOELECTRONICS
Abstract

A novel technique for the fabrication of a hollow-core antiresonant polymer optical fiber is proposed. The fiber is directly extruded and drawn from a 3D printer in a single step procedure using a nozzle with inverted micro-structure. The possibility of exploiting fibers made from acrylonitrile butadiene styrene (ABS) for guiding CO2 laser (λ ~ 10.6 μm) is assessed analyzing the profile of the confinement loss. [ABSTRACT FROM AUTHOR]

Published
2019

2. Giant Faraday rotation in gadolinium doped silica optical fibers for high performance optical isolators

Author

Martynas Beresna, Wanvisa Talataisong, Gilberto Brambilla, Yun Wang, Timothy Lee, Norberto Chiodini, Rand Ismaeel, Ali Masoudi, Ismaeel, R, Masoudi, A, Wang, Y, Talataisong, W, Chiodini, N, Lee, T, Beresna, M, and Brambilla, G

Subjects
Optical fiber, Materials science, Optical isolator, Gadolinium, chemistry.chemical_element, 02 engineering and technology, 01 natural sciences, law.invention, Ion, 010309 optics, symbols.namesake, 020210 optoelectronics & photonics, law, 0103 physical sciences, Faraday effect, 0202 electrical engineering, electronic engineering, information engineering, business.industry, Electronic, Optical and Magnetic Material, Doping, technology, industry, and agriculture, eye diseases, Magnetic field, chemistry, Mechanics of Materials, symbols, Optoelectronics, business, human activities, Order of magnitude
Abstract

Silica fibres doped with small (< 1 mol%) concentrations of gadolinium ions have been fabricated and tested in a 1T magnetic field showing a Faraday rotation two orders of magnitude larger than that reported in conventional telecom fibres. This is the largest Faraday rotation ever reported in low-loss optical fibers and could pave the way for a new class of optical isolators.

Published
2018

3. Enhanced ultraviolet photoluminescence of Gd3+ in silica glass

Author

Norberto Chiodini, Yiping Wang, Sebastian Steigenberger, Martynas Beresna, Pranabesh Barua, Gilberto Brambilla, Jing He, He, J, Wang, Y, Chiodini, N, Steigenberger, S, Barua, P, Beresna, M, and Brambilla, G

Subjects
Photoluminescence, Materials science, Silica glass, business.industry, Electronic, Optical and Magnetic Material, Analytical chemistry, 02 engineering and technology, Thermal treatment, 010402 general chemistry, 021001 nanoscience & nanotechnology, medicine.disease_cause, 01 natural sciences, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Computer Networks and Communication, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, medicine, Rare-earth-doped material, Optoelectronics, 0210 nano-technology, business, Excitation, Ultraviolet
Abstract

Enhancement of photoluminescence (PL) signal from Gd3+-doped silica glass densified by rapid thermal treatment (RTT) in the ultraviolet (UV) is investigated. Significant decrease of the loss covering the UV band is observed. The strong emission detected at 314 nm is assigned to the 6P7/2 to 8S7/2 transition under excitation of 6DJ, 6IJ, and 6PJ energy levels of the Gd3+.

Published
2017

4. UV luminescence in gd-doped silica and phosphosilicate optical fibers

Author

Jayanta K. Sahu, Yiping Wang, Martynas Beresna, Norberto Chiodini, Gilberto Brambilla, Jing He, Pranabesh Barua, Sebastian Steigenberger, M.I.M. Abdul Khudus, Wang, Y, He, J, Barua, P, Chiodini, N, Steigenberger, S, Abdul Khudus, M, Sahu, J, Beresna, M, and Brambilla, G

Subjects
Photoluminescence, Optical fiber, Materials science, Analytical chemistry, Gadolinium, 02 engineering and technology, medicine.disease_cause, 01 natural sciences, law.invention, 010309 optics, law, 0103 physical sciences, medicine, Fiber, Ultraviolet, business.industry, Electronic, Optical and Magnetic Material, Doping, 021001 nanoscience & nanotechnology, Atomic and Molecular Physics, and Optics, Computer Networks and Communication, Excited state, Optoelectronics, 0210 nano-technology, business, Luminescence, Ground state
Abstract

Gd-doped silica and phosphosilicate fibers were pulled from preforms fabricated using the rod-in-tube technique and the solution doping technique, respectively. Ultraviolet (UV)-B luminescence from trivalent Gd at around 312 nm given by transition from first excited state to ground state were observed under deep UV excitations.

Published
2017

5. Ultraviolet photoluminescence in Gd-doped silica and phosphosilicate fibers

Author

Pranabesh Barua, Yiping Wang, Martynas Beresna, Gilberto Brambilla, Sebastian Steigenberger, Jayanta K. Sahu, Norberto Chiodini, M.I.M. Abdul Khudus, Jing He, Wang, Y, He, J, Barua, P, Chiodini, N, Steigenberger, S, Abdul Khudus, M, Sahu, J, Beresna, M, and Brambilla, G

Subjects
lcsh:Applied optics. Photonics, 0209 industrial biotechnology, Photoluminescence, Optical fiber, Materials science, Computer Networks and Communications, Analytical chemistry, Infrared spectroscopy, 02 engineering and technology, medicine.disease_cause, 01 natural sciences, law.invention, 010309 optics, Optical pumping, 020901 industrial engineering & automation, law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, medicine, Fiber, business.industry, Doping, lcsh:TA1501-1820, Atomic and Molecular Physics, and Optics, Computer Networks and Communication, Absorption band, Optoelectronics, business, Ultraviolet
Abstract

Optical fiber lasers operating in the near infrared (IR) and visible spectral regions have relied on the spectroscopic properties of rare earth ions such as Yb3+, Er3+, Tm3+, Nd3+ and Sm3+. Here, we investigate Gd3+ doping in phosphosilicate and pure silica fibers using solution doping and sol-gel techniques respectively for potential applications in the ultraviolet (UV). Photoluminescence spectra for optical fiber bundles and fiber preforms were recorded and compared. Emissions at 312 nm (phosphosilicate) and 314 nm (pure silica) were observed when pumping to the Gd3+ 6DJ, 6IJ, and 6PJ = 5/2, 3/2 energy levels. Oxygen deficient center was observed in solution doping sample with a wide absorption band centered at around 248 nm not affecting pumping to 6IJ states.

Published
2017

6. UV light generation in optical fibres

Author

Martynas Beresna, Jing He, Yun Wang, M.I.M. Abdul Khudus, Norberto Chiodini, Peter Horak, Francesco De Lucia, Gilberto Brambilla, Rand Ismaeel, Pier J. A. Sazio, Wang, Y, He, J, Abdul Khudus, M, Ismaeel, R, de Lucia, F, Sazio, P, Horak, P, Chiodini, N, Beresna, M, and Brambilla, G

Subjects
Optical fiber, Materials science, business.industry, Rare earth, Doping, Optical physics, Nonlinear optics, Physics::Optics, uv light, optical fibers, law.invention, Optics, Frequency conversion, law, Condensed Matter::Superconductivity, Fiber laser, High harmonic generation, Optoelectronics, Condensed Matter::Strongly Correlated Electrons, business
Abstract

UV light has been generated in optical fibers using nonlinear optics (harmonic generation) and rare earth doping with Gd3+ Asia Communications and Photonics Conferene (ACP)

Published
2016

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