Krzysztof Anders | Warsaw University of Technology (original) (raw)
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Papers by Krzysztof Anders
2018 Baltic URSI Symposium (URSI), 2018
In this work we analyze possibility of constructing integrated readout units for FBG sensors base... more In this work we analyze possibility of constructing integrated readout units for FBG sensors based on photonic integrated circuits in generic technology of indium phosphide. We consider two different architectures of such devices — the matrix of integrated tunable laser sources accompanied by a single photodiode detector and alternative design based on Arrayed Waveguide Grating (A WG) — based spectrometer with a broadband light source.
Semiconductor Lasers and Laser Dynamics X, May 30, 2022
Description for the source code
Electron Technology Conference 2013, 2013
ABSTRACT In this work we report the recent results of our investigations on synthesis the PMMA co... more ABSTRACT In this work we report the recent results of our investigations on synthesis the PMMA composite base on Al2O3 doped by ytterbium metal. The set of the Al2O3:Yb3+ composite samples was manufactured and examined with respect of their structural, physical and mechanical properties. The investigations have confirmed applicability of developed synthesis method to manufacturing of good structural quality, decent level of agglomeration, good homogeneity and good thermal stability consisting of nanoparticles with average size in the range of several tens of nanometers.
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2010, 2010
In this paper we present our recent works on design and development of a compact erbium doped fib... more In this paper we present our recent works on design and development of a compact erbium doped fiber laser with fiber loop reflector dedicated to application in student's laboratory. The scope covers the detailed analysis of spectroscopic properties of erbium doped glass samples, theoretical modeling of fundamental lasing properties, design and preparation of laser components and, finally, preparation and characterization of developed fiber laser setup.
Optical Materials, 2012
Abstract In this work we report the recent results of our investigation on visible emission prope... more Abstract In this work we report the recent results of our investigation on visible emission properties of the PMMA-based polymer nanocomposites doped with Er 3+ :Y 2 O 3 nanopowders. The set of active nanopowders, and polymer films, differing in active ions concentration, was characterized with respect of their luminescent properties in the green spectral range, available to a limited extent for semiconductor lasers. In particular – the concentration dependent emission spectra and fluorescence dynamics profiles were measured under direct (single photon) and up-converted excitation, enabling the comparison of luminescent properties of developed nanocomposite materials and original nanopowders, optimization of erbium dopant concentration as well as discussion of excitation mechanisms and analysis of the efficiency of depopulation processes.
Journal of Rare Earths, 2011
Journal of Physics: Condensed Matter, 2013
In this contribution, the photoluminescence, time-resolved luminescence and luminescence kinetics... more In this contribution, the photoluminescence, time-resolved luminescence and luminescence kinetics of α'-Sr2SiO4:Eu(2+) are studied. The luminescence of Sr2SiO4:Eu(2+) consists of two broad bands, peaked at 490 nm (blue-green) and 570 nm (yellow-orange), which originate from two luminescence centers, related to Eu(2+) in ten-coordinated SI and nine-coordinated SII sites, respectively. Based on spectroscopic data the energetic structure of Sr2SiO4:Eu(2+) has been developed, which includes the bands edges, energies of Eu(2+) in the SI and SII sites and energies of strontium and oxygen vacancies. To investigate the long-lasting luminescence phenomenon in Sr2SiO4:Eu(2+) the temperature influence on the time evolution of luminescence was analyzed. It has been found that the long-lasting luminescence is related to the Eu(2+) in SII site. The shallowest traps responsible for emission decaying within a few seconds are tentatively attributed to the [Eu(3+)(SII)-[Formula: see text]] centers. The depth of traps responsible for the long-lasting luminescence observed at room temperature has been estimated as equal 0.73 eV.
Materials
The fabrication processes for silicon nitride photonic integrated circuits evolved from microelec... more The fabrication processes for silicon nitride photonic integrated circuits evolved from microelectronics components technology—basic processes have common roots and can be executed using the same type of equipment. In comparison to that of electronics components, passive photonic structures require fewer manufacturing steps and fabricated elements have larger critical dimensions. In this work, we present and discuss our first results on design and development of fundamental building blocks for silicon nitride integrated photonic platform. The scope of the work covers the full design and manufacturing chain, from numerical simulations of optical elements, design, and fabrication of the test structures to optical characterization and analysis the results. In particular, technological processes were developed and evaluated for fabrication of the waveguides (WGs), multimode interferometers (MMIs), and arrayed waveguide gratings (AWGs), which confirmed the potential of the technology and...
Semiconductor Lasers and Laser Dynamics VIII
The objective of this research is to design, develop and test the InP based multichannel transcei... more The objective of this research is to design, develop and test the InP based multichannel transceivers dedicated for application in WDM access systems. The transmitters are making use of DBR lasers and Mach-Zehnder modulators. The satisfying parameters of transceivers were obtained like low threshold current and good side mode suppression ratio.
An optical time domain reflectometer (OTDR) is a device commonly used for testing and monitoring ... more An optical time domain reflectometer (OTDR) is a device commonly used for testing and monitoring of fiber-optic networks of every kind [1,2]. Despite significant progress in the field, it should be noted that contemporary devices are typically bulky, comprising discrete optoelectronic components and designed for monitoring of a single optical fiber link only. In this work we propose two application specific photonic integrated circuits (ASPICs) designed and developed for a novel OTDR system, which combines the advantages of compactness and multi-channel operation.
In this work we present and discuss a concept of an integrated optical time domain reflectometer ... more In this work we present and discuss a concept of an integrated optical time domain reflectometer realized in indium phosphide generic integration technology. The proof-of-the-concept chip has been designed, manufactured and tested with respect of applicability in real measuring systems. In general, the correctness of the proposed approach has been confirmed, simultaneously indicating necessary modifications of the design. As a result, the optimized variants of the photonic integrated circuit have been proposed.
Photonics Letters of Poland, 2017
This work is focused on developing all-fiber green laser in hybrid geometry, based on combination... more This work is focused on developing all-fiber green laser in hybrid geometry, based on combination of Er:ZBLAN active fiber and silica fiber-based passive components of optical resonator and deploying Fiber Bragg Gratings (FBGs) as highly selective mirrors for green spectral range. The scope of work covers fundamental spectroscopic characterization of Er:ZBLAN samples, determination of key spectroscopic parameters, modelling the lasing properties and lasing experiments in different pumping geometries. Full Text: PDF References W.P. Risk, T.R. Gosnell, A.V. Nurmikko, "Compact blue-green lasers", Cambridge University Press. (2003) CrossRef J.Y. Allain, M. Monerie, and H. Poignant, "Tunable green upconversion erbium fibre laser", Electronics Lett., 28 (1992) 111-113 CrossRef Z . Luo, Q. Ruan, M. Zhong, Y. Cheng, R. Yang, B. Xu, H. Xu, Z. Cai, "Compact self-Q-switched green upconversion Er:ZBLAN all-fiber laser operating at 543.4 nm", Optics Lett. 41 (2016) ...
2018 Baltic URSI Symposium (URSI), 2018
In this work we analyze possibility of constructing integrated readout units for FBG sensors base... more In this work we analyze possibility of constructing integrated readout units for FBG sensors based on photonic integrated circuits in generic technology of indium phosphide. We consider two different architectures of such devices — the matrix of integrated tunable laser sources accompanied by a single photodiode detector and alternative design based on Arrayed Waveguide Grating (A WG) — based spectrometer with a broadband light source.
Semiconductor Lasers and Laser Dynamics X, May 30, 2022
Description for the source code
Electron Technology Conference 2013, 2013
ABSTRACT In this work we report the recent results of our investigations on synthesis the PMMA co... more ABSTRACT In this work we report the recent results of our investigations on synthesis the PMMA composite base on Al2O3 doped by ytterbium metal. The set of the Al2O3:Yb3+ composite samples was manufactured and examined with respect of their structural, physical and mechanical properties. The investigations have confirmed applicability of developed synthesis method to manufacturing of good structural quality, decent level of agglomeration, good homogeneity and good thermal stability consisting of nanoparticles with average size in the range of several tens of nanometers.
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2010, 2010
In this paper we present our recent works on design and development of a compact erbium doped fib... more In this paper we present our recent works on design and development of a compact erbium doped fiber laser with fiber loop reflector dedicated to application in student's laboratory. The scope covers the detailed analysis of spectroscopic properties of erbium doped glass samples, theoretical modeling of fundamental lasing properties, design and preparation of laser components and, finally, preparation and characterization of developed fiber laser setup.
Optical Materials, 2012
Abstract In this work we report the recent results of our investigation on visible emission prope... more Abstract In this work we report the recent results of our investigation on visible emission properties of the PMMA-based polymer nanocomposites doped with Er 3+ :Y 2 O 3 nanopowders. The set of active nanopowders, and polymer films, differing in active ions concentration, was characterized with respect of their luminescent properties in the green spectral range, available to a limited extent for semiconductor lasers. In particular – the concentration dependent emission spectra and fluorescence dynamics profiles were measured under direct (single photon) and up-converted excitation, enabling the comparison of luminescent properties of developed nanocomposite materials and original nanopowders, optimization of erbium dopant concentration as well as discussion of excitation mechanisms and analysis of the efficiency of depopulation processes.
Journal of Rare Earths, 2011
Journal of Physics: Condensed Matter, 2013
In this contribution, the photoluminescence, time-resolved luminescence and luminescence kinetics... more In this contribution, the photoluminescence, time-resolved luminescence and luminescence kinetics of α'-Sr2SiO4:Eu(2+) are studied. The luminescence of Sr2SiO4:Eu(2+) consists of two broad bands, peaked at 490 nm (blue-green) and 570 nm (yellow-orange), which originate from two luminescence centers, related to Eu(2+) in ten-coordinated SI and nine-coordinated SII sites, respectively. Based on spectroscopic data the energetic structure of Sr2SiO4:Eu(2+) has been developed, which includes the bands edges, energies of Eu(2+) in the SI and SII sites and energies of strontium and oxygen vacancies. To investigate the long-lasting luminescence phenomenon in Sr2SiO4:Eu(2+) the temperature influence on the time evolution of luminescence was analyzed. It has been found that the long-lasting luminescence is related to the Eu(2+) in SII site. The shallowest traps responsible for emission decaying within a few seconds are tentatively attributed to the [Eu(3+)(SII)-[Formula: see text]] centers. The depth of traps responsible for the long-lasting luminescence observed at room temperature has been estimated as equal 0.73 eV.
Materials
The fabrication processes for silicon nitride photonic integrated circuits evolved from microelec... more The fabrication processes for silicon nitride photonic integrated circuits evolved from microelectronics components technology—basic processes have common roots and can be executed using the same type of equipment. In comparison to that of electronics components, passive photonic structures require fewer manufacturing steps and fabricated elements have larger critical dimensions. In this work, we present and discuss our first results on design and development of fundamental building blocks for silicon nitride integrated photonic platform. The scope of the work covers the full design and manufacturing chain, from numerical simulations of optical elements, design, and fabrication of the test structures to optical characterization and analysis the results. In particular, technological processes were developed and evaluated for fabrication of the waveguides (WGs), multimode interferometers (MMIs), and arrayed waveguide gratings (AWGs), which confirmed the potential of the technology and...
Semiconductor Lasers and Laser Dynamics VIII
The objective of this research is to design, develop and test the InP based multichannel transcei... more The objective of this research is to design, develop and test the InP based multichannel transceivers dedicated for application in WDM access systems. The transmitters are making use of DBR lasers and Mach-Zehnder modulators. The satisfying parameters of transceivers were obtained like low threshold current and good side mode suppression ratio.
An optical time domain reflectometer (OTDR) is a device commonly used for testing and monitoring ... more An optical time domain reflectometer (OTDR) is a device commonly used for testing and monitoring of fiber-optic networks of every kind [1,2]. Despite significant progress in the field, it should be noted that contemporary devices are typically bulky, comprising discrete optoelectronic components and designed for monitoring of a single optical fiber link only. In this work we propose two application specific photonic integrated circuits (ASPICs) designed and developed for a novel OTDR system, which combines the advantages of compactness and multi-channel operation.
In this work we present and discuss a concept of an integrated optical time domain reflectometer ... more In this work we present and discuss a concept of an integrated optical time domain reflectometer realized in indium phosphide generic integration technology. The proof-of-the-concept chip has been designed, manufactured and tested with respect of applicability in real measuring systems. In general, the correctness of the proposed approach has been confirmed, simultaneously indicating necessary modifications of the design. As a result, the optimized variants of the photonic integrated circuit have been proposed.
Photonics Letters of Poland, 2017
This work is focused on developing all-fiber green laser in hybrid geometry, based on combination... more This work is focused on developing all-fiber green laser in hybrid geometry, based on combination of Er:ZBLAN active fiber and silica fiber-based passive components of optical resonator and deploying Fiber Bragg Gratings (FBGs) as highly selective mirrors for green spectral range. The scope of work covers fundamental spectroscopic characterization of Er:ZBLAN samples, determination of key spectroscopic parameters, modelling the lasing properties and lasing experiments in different pumping geometries. Full Text: PDF References W.P. Risk, T.R. Gosnell, A.V. Nurmikko, "Compact blue-green lasers", Cambridge University Press. (2003) CrossRef J.Y. Allain, M. Monerie, and H. Poignant, "Tunable green upconversion erbium fibre laser", Electronics Lett., 28 (1992) 111-113 CrossRef Z . Luo, Q. Ruan, M. Zhong, Y. Cheng, R. Yang, B. Xu, H. Xu, Z. Cai, "Compact self-Q-switched green upconversion Er:ZBLAN all-fiber laser operating at 543.4 nm", Optics Lett. 41 (2016) ...