Dorosz Jan

Bialystok University of Technology · Department of Electrical Engineering

Double-clad optical fiber with a multi-ring core profile doped with thulium and holmium fabricated by Modified Chemical Vapor Deposition Chelate Doping Technology (MCVD-CDT) is presented. The measured Tm 2 O 3 and Ho 2 O 3 complexes’ weight concentrations were 0.5% and 0.2% respectively. Numerical analyses show weakly guiding conditions and 42.2 µm...

The near-infrared emission in fabricated low-phonon energy, gallo-germanate glass, and double-core optical fiber has been investigated. Broadband amplified spontaneous emission (ASE) was obtained in optical fiber with cores doped with: 1 st - 0.2Er 2 O 3 and 2 nd - 0.5Yb 2 O 3 /0.4Tm 2 O 3 /0.05Ho 2 O 3 as a result of the superposition of emission...

An investigation of fluoroindate glass and fiber co-doped with Yb3+/Er3+ ions as a potential temperature sensor was assessed using the fluorescence intensity ratio (FIR) technique. Analysis of thermally coupled levels (TCLs—2H11/2 and 4S3/2), non-thermally coupled levels (non-TCLs—4F7/2 and 4F9/2), and their combination were examined. Additionally,...

Nanophosphors are widely used, especially in biological applications in the first and second biological windows. Currently, nanophosphors doped with lanthanide ions (Ln3+) are attracting much attention. However, doping the matrix with lanthanide ions is associated with a narrow luminescence bandwidth. This paper describes the structural and lumines...

Erbium (Er)-doped barium gallo-germanate (BGG) glasses modified by TiO2 have been investigated for near-infrared luminescence applications. Luminescence at 1.5 μm associated to ⁴I13/2→⁴I15/2 transition of Er³⁺ ions has been examined in function of TiO2 concentration. Several spectroscopic and near-infrared (NIR) laser parameters for Er³⁺ such as st...

The effect of BaF2, MgF2, and AlF3 on the structural and luminescent properties of gallo-germanate glass (BGG) doped with erbium ions was investigated. A detailed analysis of infrared and Raman spectra shows that the local environment of erbium ions in the glass was influenced mainly by [GeO]4 and [GeO]6 units. Moreover, the highest number of non-b...

In current work, spectroscopic properties of Nd ³⁺ ions in titanate-germanate glasses have been studied for near-IR luminescence and laser applications. Near-IR luminescence at 1.06 µm due to ⁴ F 3/2 → ⁴ I 11/2 laser transition of Nd ³⁺ ions has been examined in the function of TiO 2 concentration. Based on theoretical calculations and experimental...

Glass-ceramic is semi-novel material with many applications, but it is still problematic in obtaining fibers. This paper aims to develop a new glass-ceramic material that is a compromise between crystallization, thermal stability, and optical properties required for optical fiber technology. This compromise is made possible by an alternative method...

The luminescent properties of lanthanides doped optical fibers can be modified by introducing one or more rare earth elements thus obtaining the possibility of profiling the luminescence spectrum through co-emission phenomena, energy transfer, and conversion phenomena in the energy structure of lanthanides (e.g. energy transfers, cross-relaxation)....

Pr³⁺/Er³⁺ co-doped glasses based on InF3 were synthesized and then studied for white light emission. The emission spectra consist of several bands corresponding to characteristic 4f-4f electronic transitions of Pr³⁺ and Er³⁺ ions. The relative intensities of emission bands depend on the selective excitation wavelengths. The energy transfer process...

This study presented an analysis of the TeO2/GeO2 molar ratio in an oxide glass system. A family of melt-quenched glasses with the range of 0–35 mol% of GeO2 has been characterized by using DSC, Raman, MIR, refractive index, PLE, PL spectra, and time-resolved spectral measurements. The increase in the content of germanium oxide caused an increase i...

An investigation of the structural and luminescent properties of the transparent germanate glass-ceramics co-doped with Ni2+/Er3+ for near-infrared optical fiber applications was presented. Modification of germanate glasses with 10–20 ZnO (mol.%) was focused to propose the additional heat treatment process controlled at 650 °C to obtain transparent...

This work reports on the fabrication and analysis of near-infrared and mid-infrared luminescence spectra and their decays in fluoroindate glasses co-doped with Yb3+/Ho3+. The attention has been paid to the analysis of the Yb3+→ Ho3+ energy transfer processed ions in fluoroindate glasses pumped by 976 nm laser diode. The most effective sensitization...

Fluoroindate glasses co-doped with Pr³⁺/Er³⁺ ions were synthesized and their near-infrared luminescence properties have been examined under selective excitation wavelengths. For the Pr³⁺/Er³⁺ co-doped glass samples several radiative and nonradiative relaxation channels and their mechanisms are proposed under direct excitation of Pr³⁺ and/or Er³⁺. T...

Glass and ceramic materials doped with rare earth (RE) ions have gained wide interest in photonics as active materials for lasers, optical amplifiers, and luminescent sensors. The emission properties of RE-doped glasses depend on their chemical composition, but they can also be tailored by modifying the surrounding active ions. Typically, this is a...

Optical Fibers and Their Applications, Poland 2020; Development of optical fiber technology in Poland 2020; Proc.SPIE 11456; Światłowody i Ich Zastosowania 2020; The Conference series on Optical Fibers and Their Applications (OFTA) was initiated in 1976 by professor Adam Smoliński of Warsaw University of Technology, Poland. The book is a proce...

Development of optical fiber technology in Poland 2020, Proc.SPIE 11456; The conference series on Optical Fibres and Their Applications (OFTA) is held in Poland since 1976, initially every 3 yearsm now every 18 months. It is organized alternately by two national optical fibre technological centres in Białystok (Technical University od Białystok)...

Optical Fibers and Their Applications 2020, Proc. SPIE 11456; Światłowody i Ich Zastosowania, Białowieża, Poland, 27-31 January 2020; Symposium on “Optical Fibers and Their Application” OFTA is a kind of a forum of national science in this branch of Photonics. The Symposium usually hosts also numerable guests from this geographical region, and e...

Development of Optical Fiber Technology in Poland -2020; Proc. SPIE 11456; Rozwój techniki światłowodowej w Polsce 2020; Światłowody i Ich Zastosowania, Białowieża, Poland, 27-31 January 2020; The conference series on Optical Fibres and Their Applications (OFTA) is held in Poland since 1976, now every 18 months. It is organized alternately by...

This work reports the sensitization of Ho3+ - doped fluoroindate glasses for near and mid-infrared emission. Special attention has been paid on the comparative analysis of the luminescent properties of the glasses co-doped with 0.8ErF3/1.6HoF3, 0.8YbF3/1.6HoF3, and 0.8TmF3/1.6HoF3. Moreover, the energy transfer processes between rare-earth (donor-a...

The RE-co-doped silica optical fibers emitting in the eye-safe spectral range are still attractive for new applications like LIDAR, pollution monitoring, navigation, and free-space optical communication. High gain and beam quality of fiber sources based on large mode area (LMA) active fibers can be fabricated by the well-known Modified Chemical Vap...

This work reports on the analysis of structural and spectroscopic properties of the fluoroindate glasses co-doped with Er3+/Ho3+. Structural analysis showed that erbium and holmium ions were modifier ions and depolymerizedof the fluoroindate glass network. The energy transfer processes between rare - earth ions in fluoroindate glasses pumped by and...

This work reports on the analysis of near-IR and mid-IR luminescence spectra and their decays in fluoroindate glasses co-doped with Er3+/Tm3+. In particular, the energy transfer processes between rare earth ions in fluoroindate glasses pumped by 796 nm and 980 nm laser diode have been examined. Owing to donor-acceptor energy transfer and superposit...

The effect of BaO content on the glass-forming ability, glass stability and structure of tellurite–phosphate oxide glasses in the 70TeO2–10P2O5–(20-x)ZnO–xBaO (x = 0, 5 and 10 mol%) system has been discussed. From the differential scanning calorimetry, the glass transition (Tg), crystallization (Tc) and the melting (Tm) temperatures were estimated....

In this work structural and luminescence properties of gallo-germanate glasses were investigated. The mentioned glass system was modified with barium and antimony oxides and doped with Eu³⁺ ions. The starting glass consisted of barium oxide as a modifier which was then gradually replaced by antimony oxide to form six glass samples. The gallo-german...

Luminescent optical fibres are one of the most important photonics elements as they allow to construct high power fibre lasers and different unique optical sources in the broad range from UV to IR. The most important requirements cover efficient luminescence core materials and easily pumped optical fibre constructions. Depends on the applications t...

Holmium singly doped barium gallo-germanate glasses have been studied for near-infrared luminescence at 2000 nm. Near-infrared luminescence spectra corresponding to ⁵I7 → ⁵I8 transition of trivalent holmium and their decays have been examined as a function of BaF2 and activator (Ho³⁺) concentration. The integrated intensities of luminescence bands...

The near-infrared emission properties in low-phonon (805 cm ⁻¹ ) gallo-germanate glasses and their glass fibers co-doped with Yb ³⁺ /Ho ³⁺ and Yb ³⁺ /Tm ³⁺ /Ho ³⁺ have been investigated. Emission bands centered at about 2 μm correspond to ³ F 4 → ³ H 6 (Tm ³⁺ ) and/or ⁵ I 7 → ⁵ I 8 (Ho ³⁺ ) transitions. The spectral widths of emission lines are rel...

The influence of Cr ³⁺ concentration on near-infrared emission of Ho ³⁺ in barium gallo-germanate glass has been studied. Near-infrared emission bands, due to ⁴ T 2 → ⁴ A 2 (Cr ³⁺ ) as well as ⁵ I 6 → ⁵ I 8 and ⁵ I 7 → ⁵ I 8 (Ho ³⁺ ) transitions, were observed under excitation of Cr ³⁺ . The enhanced and broadband near-infrared emission was obtaine...

Near-infrared luminescence properties of Nd3+ and Ho3+ ions in barium gallo-germanate glasses have been reported. Several spectroscopic parameters for Nd3+ and Ho3+ ions have been determined from the Judd-Ofelt analysis and absorption/luminescence measurements. Quite large luminescence lifetime, quantum efficiency and stimulated emission cross-sect...

Up-conversion luminescence of Er³⁺-doped oxyfluoride germanate optical fiber is observed under laser-diode excitation. The enhanced green emission line is due to ²H11/2,⁴S3/2 → ⁴I15/2 transition of Er³⁺. The integrated luminescence intensity related to ²H11/2,⁴S3/2 → ⁴I15/2 (green) and ⁴F9/2 → ⁴I15/2 (red) transitions of Er³⁺ is reduced with increa...

Rozwój techniki światłowodwej w Polsce 2017; (Development of optical fiber technology in Poland); ELEKTRONIKA, vol.58, no.02/2017, p.3-11; Optical Fibers and Their Applications 2017; Konferencja „Światłowody i Ich Zastosowania” odbywa się cyklicznie w kraju od 1976 r., obecnie co półtora roku. Jest organizowana naprzemiennie przez dwa krajowe ś...

Development of Optical Fiber Technology in Poland: 2017; Proc.SPIE 10325; The Conference on „Optical Fibres and Their Applications” is held periodically in Poland since 1976, now every 18 months. It is organized alternately by two national optical fibre technological centres in Białystok (Technical University) and Lublin (UMCS University). The co...

In this article the luminescence properties of three different constructions of doble-clad optical fibers with multicores co-doped with Nd/Yb ions have been investigated. All fibers were made with thermally stable aluminosilicate glass. In each optical fiber, strong and wide emission in the 1μm range obtained by Nd³⁺ → Yb³⁺ energy transfer correspo...

Symposium on “Optical Fibers and Their Application” is a kind of a forum of national science in this branch of Photonics. The Symposium usually hosts also numerable guests from this geographical region, and especially from neighboring countries and Europe. It is organized every year and a half by two major optical fiber technology and application c...

Development of Optical Fiber Technology in Poland: 2017, Proc.SPIE 10325; The Conference on „Optical Fibres and Their Applications” is held periodically in Poland since 1976, now every 18 months. It is organized alternately by two national optical fibre technological centres in Białystok (Technical University) and Lublin (UMCS University). The co...

Technologia światłowodów dwurdzeniowych dla czujników fotonicznych

Światłowody o rdzeniach macierzowych November 2016 Project: Tailored Optical Fibres Ryszard S Romaniuk, Jan Dorosz, Krzysztof T. Pozniak, Jerzy Mazerski

Broadband near-infrared luminescence properties of rare earth doped barium gallo-germanate glasses have been investigated. NIR luminescence spectra due to 4 I 13/2 → 4 I 15/2 (Er 3+ ), 1 G 4 → 3 H 5 and 1 D 2 → 1 G 4 (Pr 3+ ) transitions of rare earth ions were measured under different excitation wavelengths. Several spectroscopic parameters for ra...

Thermal stability and broadband NIR luminescence of Pr3+ doped gallo-germanate glasses with BaF2 have been studied. The thermal factors are larger for glass samples with low BaF2 content exhibiting good thermal stability against devitrification. Luminescence due to 1D2 → 1G4 transition of Pr3+ was measured under 450 nm excitation. The 1D2 measured...

Optical Fiber Technology in Poland – Four Decades of Development 1975 - 2015; Rozwój techniki światłowodowej w Polsce; Proc.SPIE 9816; The paper is a subjective yet critical authors’ description of arbitrarily chosen series of events associated with the development of optical fibre technology (OFT) in Poland. There are reminding pioneering resear...

The numerous applications of luminescent glass and polymeric microspheres are well known. The polymeric structures are popular as they assure good processability (solid and porous structures) and high doping level. The article presents the suspension polymerization process of polymeric (PMMA) microspheres doped by xanthene dyes: Fluorescein (Fl) an...

Luminescence properties of Pr3+ ions in germanate glasses modified by BaF2 were investigated. Several luminescence bands originating to transitions from the 3P0 state to the lower-lying states of Pr3+ were registered under 450 nm excitation. The spectral analysis suggests that the positions of luminescence bands and their relative intensities are c...

In the paper double-clad optical fiber with two off-set cores co-doped with 1Yb2O3–0.1Tm2O3 and 1Yb2O3–0.5Ho2O3 has been investigated. Antimony–germanate glass was melted as a matrix for active cores. The concentration of lanthanides and their ratio have been optimized to achieve maximum upconversion emission intensity at 478 nm (1G4→3H6) and 650 n...

Retrospective report on the development of optical fiber technology in Poland; Optical fiber technology in Poland: four decades of development 1975-2015, Proc.SPIE 9816; The paper is a subjective yet critical authors’ description of arbitrarily chosen series of events associated with the development of optical fibre technology (OFT) in Poland. T...

Lead-free oxyfluoride borate glasses singly doped with Pr3+ and Er3+ were prepared and next investigated using absorption and luminescence spectroscopy. In the studied glass system, barium oxide was substituted by BaF2. Two luminescence bands of Pr3+ located at visible spectral region are observed, which correspond to 3P0–3H4 (blue) and 1D2–3H4 (re...

Optical Fiber Technology in Poland - Four Decades of Development 1975 - 2015; Proc.SPIE 9816; Development of optical fiber technology in Poland; Rozwój techniki światłowodowej w Polsce; September 2015, Nałęczów, Conference: Optical Fibers and Their Applications 2015; Proceedings of SPIE Volume: 9816 Project: Photonics Ryszard S Romaniuk, Do...

ELEKTRONIKA 7/2015, p.79-87; 8/2015, p.54-63; Cztery dekady rozwoju nauki i techniki światłowodowej w kraju - część 1 i część 2; Rozwój techniki światłowodowej w Polsce; Dwuczęściowy artykuł jest autorskim i krytycznym opisem zbioru wybranych wydarzeń związanych z rozwojem technologii światłowodów włóknistych w kraju. Przypomniano pionierskie...

ELEKTRONIKA 7/2015, p.79-87; 8/2015, p.54-63; Cztery dekady rozwoju nauki i techniki światłowodowej w kraju - część 1 i 2; Artykuł jubileuszowy dedykujemy pamięci pionierów techniki światłowodowej w Polsce, którzy byli promotorami i współtwórcami jej początkowego rozwoju: prof. Adam Smoliński, prof. Zenon Szpigler, prof. Andrzej Waksmundzki, pro...

ELEKTRONIKA 7/2015, p.79-87; 8/2015, p.54-63; Cztery dekady rozwoju nauki i techniki światłowodowej w kraju - część 1 i 2; Dwuczęściowy artykuł jest autorskim i krytycznym opisem zbioru wybranych wydarzeń związanych z rozwojem technologii światłowodów włóknistych w kraju. Przypomniano pionierskie działania w drugiej połowie lat siedemdziesiątych...

In the paper the luminescence optical fiber used as a temperature sensor is presented. The new construction of rhodamine B doped, polymethyl methacrylate optical fibre with silver coating is shown. The fabrication process and luminescent properties of rhodamine B in sensing fibre are investigated. The attenuation and spectral shift of luminescence...

Spectroscopic properties of Er3+ ions in lead-free oxyfluoride germanate glasses were studied. The absorption and luminescence spectra of Er3+ ions were examined for glass samples with low and high BaF2 content. From absorption spectra the bonding parameter was calculated and its value is reduced with increasing BaF2 content. The maximum of absorpt...

In the paper the research on rare-earth doped and co-doped optical fibre conducted in the Laboratory of Optical Fiber Technology at the Bialystok University of Technology is presented. Novel active fibre constructions like multicore, helical-core and side detecting ribbon/core optical fibers were developed with a targeted focus into application. Fi...

The article presents polymer optical fibre with sensitive luminescence cladding used for ultraviolet detection. The construction of polymethyl metacrylate (PMMA) fibre coated by organic dye doped polyurethane film is presented. The Tinopal (fluorescent optical brightener) incorporated into the polyurethane coating was used as UV indicator. The chos...

In the paper upconversion luminescence properties in Yb3+/Tm3+ co-doped antimony–germanate glass and double-clad optical fiber were studied. The concentration of lanthanides, which has shown the highest upconversion emission intensity at 478 nm (1G4 → 3H6) and 650 nm (1G4 → 3F4), is 1Yb2O3/0.1Tm2O3 (mol%) as a result of exciting with a laser diode...

Spectroscopic properties of rare earths in lead-free oxyfluoride germanate glasses were studied. The absorption and luminescence spectra of Eu(3+), Pr(3+) and Er(3+) ions were examined as a function of BaF2 concentration and several spectroscopic parameters for rare earths were determined. The ratio of integrated luminescence intensity of the (5)D0...

The fluorescence intensity ratio (FIR) of the green upconversion in Yb3+/Er3+ and blue upconversion in the Yb3+/Tm3+ co-doped tellurite glass as a function of temperature in the range of 20–220 °C was investigated. The influence of temperature on FIR upconversion emission spectra of the thermally coupled Er3+: 2H11/2 and 4S3/2 levels enabled to ach...

Optical Fibers and Their Applications 2014; Światłowody i ich Zastosowania; Photonics Letters of Poland 6(2), 50-52 (2014); Development of optical fiber technology in Poland; Conference Series on Optical Fibers and Their Applications held its 15th edition in Białystok and Lipowy Most at the end of January 2014. The paper is a concise digest of...

The article presents physicochemical, thermal and spectroscopic properties of two different glass systems: TeO2-GeO2-PbO-PbF2-BaO-Nb2O5-LaF3 and SiO2-Al2O3-Sb2O3, co-doped with Yb3+/Tm3+ ions. Blue upconversion luminescence at a wavelength of 478 nm corresponding to the thulium (1) G(4) -> H-3(6) transition was observed under 976 nm pump radiation...