Prof. Ryszard Piramidowicz Profile

Prof. Ryszard Piramidowicz

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Publications (32)

Proceedings Article | 2 April 2020 Presentation + Paper

Development of integrated photonics based on SiO2:TiO2 sol-gel derived waveguide layers: state of the art, perspectives, prospective applications

Paweł Karasiński, Cuma Tyszkiewicz, Ryszard Piramidowicz, Andrzej Kaźmierczak

Proc. SPIE. 11364, Integrated Photonics Platforms: Fundamental Research, Manufacturing and Applications

KEYWORDS: Refractive index, Waveguides, Sensors, Signal attenuation, Glasses, Integrated optics, Sol-gels, Directional couplers, Integrated photonics

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Proceedings Article | 24 May 2018 Presentation

Remote monitoring vital signs using active 3D imaging (Conference Presentation)

Piotr Garbat, Agata Olszewska, Karolina Waledzik, Ryszard Piramidowicz

Proc. SPIE. 10685, Biophotonics: Photonic Solutions for Better Health Care VI

KEYWORDS: Principal component analysis, Imaging systems, Stereoscopy, Heart, Image quality, Signal analyzers, Signal detection, Motion estimation, Vital signs, Structured light

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Video-based heart rate estimation based on the PPG technique is a remote optical technique allowing to determine the heart rate and breath rate through the intensity or motion variations. This paper proposes a new monitoring method for simultaneous estimation of heart and breathing rates using an active 3D system with structured light. Active 3D imaging systems capture information about 3D object shapes using artificial illumination. An active 3D imaging system can be realized using different techniques: time-of-flight, triangulation, motion flow, interferometry. In this work, we investigate triangulation-based systems. Heart and respiration rates are signals analyzed in proposed systems as crucial vital signs from a medical point of view. Furthermore, the type of respiration is also analyzed with separation between abdominal and torso type. The quality of breathing signals received from various optical systems is also compared. This system is based on different approaches to 3D imaging and includes random light pattern, fridge light pattern and active stereo methods. In the light pattern systems, the movements of the chest and abdominal are associated with breathing and are observed by the video camera as the light pattern deformation. The system based on active stereo method provides the depth map by which the breath signal is extracted. Further analysis of received signals is based on Principal Component Analysis (PCA). The proposed remote optical technique extracts the blood pulse from an image captured by a vision system. Patient’s face is detected with use of dedicated convolutional neural network for robust face alignment. Based on found features points, a few regions of interest are selected, and then their results are compared. Mean pixel values for three color channels (red, green, blue) are calculated. Active 3D imaging technique enables stabilization and quality improvement of the captured image. Not correlated groups of pixels are eliminated. Then cluster analysis is used on the grounds of multi-features. Measurement data are detrended by empirical mode decomposition EEMD. Subsequently, ICA was applied to recover source signals from the observations. Maximum frequency pick in the FFT spectrum determines HR. The performance of the proposed system was tested through a series of experiments. Vital signs of 10 persons with reference signals have been detected. Both, breath and heart rates estimates were found to be accurate. The proposed system can be used as a component of more complex medical systems where information about the condition of the examined patient is crucial or important.

Proceedings Article | 23 May 2018 Presentation

Noninvasive optoelectronic system for monitoring of the heart and respiratory rate of the patient exposed to MRI scanning (Conference Presentation)

Stanisław Stopiński, Anna Jusza, Krzysztof Anders, Andrzej Kaźmierczak, Konrad Markowski, Tomasz Osuch, Mariusz Krej, Lukasz Dziuda, Paweł Szczepański, Ryszard Piramidowicz

Proc. SPIE. 10680, Optical Sensing and Detection V

KEYWORDS: Medicine, Optical sensing, Fiber Bragg gratings, Sensors, Magnetic resonance imaging, Magnetism, Heart, Diagnostics, Optoelectronics, Photonic integrated circuits

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The magnetic resonance imaging (MRI) technique is a powerful diagnostic tool which is nowadays commonly used in many fields of medicine. In some cases, especially of the patients of intensive care units, it is highly recommended or even necessary to provide continuous monitoring of basic physiologic parameters, mainly the heart rate and the respiratory rate, during the MRI scan procedure. The presence of a strong magnetic field within the MRI chamber requires application of non-standard devices and solutions. The monitoring system needs to be immune to the strong magnetic field and simultaneously cannot negatively influence on the results of the scan. Therefore, application of optical sensing technologies could be potentially advantageous to fulfil these requirements. In this work we propose a novel optoelectronic measurement system, dedicated to monitoring of the patient during an MRI scan, immune to strong magnetic field and compatible with the MRI apparatus. Fiber Bragg gratings (FBGs) are used as the sensing elements – the strain induced by the patient’s respiration and cardiac activity cause a change of the Bragg wavelength. These changes can be accurately measured and monitored in the time domain. The respiratory and heart rate can be extracted by further processing of the measured signal by dedicated software. The gratings are organized in a network to maximize the effective sensing area. Each of the FBGs has a different Bragg wavelength so that they can be connected in series. The information from the sensors is read out using an interrogator based on an application specific photonic integrated circuit (ASPIC), designed and fabricated in an InP-based generic integration technology. The interrogator comprises a 36-channel arrayed waveguide grating wavelength demultiplexer, which outputs are connected to PIN photodiodes. Such a photonic circuit acts as a spectrometer and allows to reconstruct the reflection spectrum of many gratings simultaneously. An external superluminescent LED is used as the light source, however in the target configuration the source could be monolithically integrated with the interrogator. The Bragg gratings, the interrogator and the SLED are connected with each other using an optical circulator. Initial tests of the monitoring system have been performed using a single fiber Bragg grating as the strain sensor and a commercially available optoelectronic interrogator. The fiber with an inscribed FBG was mounted using an epoxy glue on a PMMA board and deployed under the patient. Two signals can be distinguished out of the measured waves. The first one, with strong and slowly-varying peaks, reflects the respiration of the patient. The second signal, characterized by low-intensity and fast-varying peaks is a result of the cardiac activity. No influence of the magnetic field of the MRI instrument on the sensing system has been observed. The first results have confirmed both the correctness of the approach and the applicability of the system to monitoring the patient’s physical condition during MRI diagnosis. This work was supported by the National Centre for Research and Development, project OPTO-SPARE, grant agreement PBS3/B9/41/2015.

Proceedings Article | 23 May 2018 Presentation

UV-VIS upconversion emission properties of Tm3++Yb3+:ZBLAN glasses (Conference Presentation)

Anna Jusza, Michal Poplawski, Krzysztof Anders, Ryszard Piramidowicz

Proc. SPIE. 10683, Fiber Lasers and Glass Photonics: Materials through Applications

KEYWORDS: Glasses, Photons, Solid state lasers, Fiber lasers, Semiconductor lasers, Upconversion, Radiation effects, ZBLAN, Diode pumped solid state lasers, Absorption

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Continuous demand for compact and efficient laser sources, specifically those operating in short-wavelength spectral range, have resulted in dynamic development of both semiconductor and diode pumped solid state lasers. Undoubtedly, semiconductor lasers are presently the most intensively investigated field of active materials and a number of impressive results has been achieved, including violet GaN laser diodes. Nevertheless, solid state lasers are constantly considered as irreplaceable in all applications requiring excellent optical parameters of the beam together with high power levels. The short-wavelength emission and lasing in solid state lasers is typically obtained via harmonic generation or up-conversion phenomena. The latter method, involving either stepwise absorption of photons or energy transfer processes, is specifically applicable to fiber geometry, where high intensity of radiation and waveguiding effect guarantee high up-conversion efficiency. Trivalent thulium is the activator ion, which energy structure in certain conditions specifically favours a multi-photon or multi-ion pumping mechanisms resulting in emission within the UV-VIS part of spectrum. In low phonon glasses and fibers, luminescence from 1G4 (480 nm), 1D2 (455 nm), as well as 1I6 (287 nm) has been reported, typically involving ESA-type consecutive absorptions of 650 nm photons (3H6→3F2+3F3, 3F4→1G4, 3H4→1D2, 1G4→3PJ) [1]. UV-VIS emission has been also observed under multi-wavelength pumping at 1112 nm, 1116 nm and 1127 nm [2]. Several years ago laser action at 287 nm in Tm3+:ZBLAN fiber was obtained under consecutive ESA of 1064 nm delivered by an Nd3+:YAG laser [3] – which is to date the shortest wavelength of stimulated emission generated in an optical fiber. Laser experiments with thulium-activated fluoride fibers, however very promising, were all severely hindered by photodarkening effects accompanying excitation of UV-violet radiation in the fibers. In this work we present our latest results on UV emission properties of bulk ZBLAN glasses doped with thulium and co-doped with ytterbium ions in different concentrations. In particular, we carefully examined the absorption characteristics, as well as concentration-dependant spectra of UV emission from the 1I6 and 1D2 levels obtained under direct and up-conversion excitation. The fluorescence dynamics profiles, recorded for all concentrations, together with excitation spectra enabled discussion of mechanisms responsible for upper levels populating. Moreover, the multi-ion processes resulting in non-radiative depopulation of excited states have been carefully examined and appropriate cross-relaxation rates have been determined, giving further impact to better understanding of the short wavelength optical properties of the investigated system. This work has been supported by the National Science Centre, Poland, grant number 2011/03/B/ST7/01917. [1] J. Y. Allain, M. Monerie, H. Poignant. Blue upconversion fluorozirconate fibre laser, Electronics Letters 26 (1990), 166–168. [2] S. G. Grubb, K. W. Bennett, R. S. Cannon, W. F. Humer, CW room-temperature blue upconversion fibre laser, Electronics Letters 28 (1992), 1243–1244 [3] R. M. El-Agmy, Upconversion CW Laser at 284 nm in a Nd:YAG-Pumped Double-Cladding Thulium-Doped ZBLAN Fiber Laser, Laser Physics 18 (2008) 1-4.

Proceedings Article | 9 May 2018 Paper

Integrated interrogator circuits for fiber optic sensor network in generic InP photonic integrated circuit technology

Andrzej Kaźmierczak, Anna Jusza, Mateusz Słowikowski, Stanisław Stopiński, Ryszard Piramidowicz

Proc. SPIE. 10680, Optical Sensing and Detection V

KEYWORDS: Tunable lasers, Waveguides, Polarization, Fiber Bragg gratings, Sensors, Spectroscopy, Photodiodes, Sensor networks, Photonic integrated circuits, Integrated circuit design

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Proceedings Article | 9 May 2018 Paper

Development of InP-based multichannel transmitters for application in WDM access systems

Aleksandra Paśnikowska, Stanisław Stopiński, Krzysztof Anders, Andrzej Kaźmierczak, Marcin Tomkiewicz, Ryszard Piramidowicz

Proc. SPIE. 10682, Semiconductor Lasers and Laser Dynamics VIII

KEYWORDS: Packaging, Transceivers, Transmitters, Bragg gratings, Waveguides, Laser applications, Wavelength division multiplexing, WDM-PON, Modulators, Photonic integrated circuits

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Proceedings Article | 1 September 2017 Paper

A study of MIR photoluminescence from Pr3+ doped chalcogenide fibers pumped at near-infrared wavelengths

S. Sujecki, L. Sojka, E. Beres-Pawlik, R. Piramidowicz, H. Sakr, Z. Tang, E. Barney, D. Furniss, T. Benson, A. Seddon

Proc. SPIE. 10455, 12th Conference on Integrated Optics: Sensors, Sensing Structures, and Methods

KEYWORDS: Mid-IR, Chalcogenide glass, Light sources, Luminescence, Chalcogenides

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Proceedings Article | 10 February 2017 Paper

Monolithically integrated multichannel transmitters for application in WDM-PON systems

Aleksandra Golba, Stanisław Stopiński, Anna Jusza, Krzysztof Anders, Andrzej Kaźmierczak, Marcin Tomkiewicz, Luc Augustin, Ryszard Piramidowicz

Proc. SPIE. 10325, Optical Fibers and Their Applications 2017

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Proceedings Article | 10 February 2017 Paper

Sensing applications of photonic integrated circuits: ultra-compact optical transducers and interrogators

Andrzej Kaźmierczak, Stanisław Stopiński, Anna Jusza, Krzysztof Anders, Ryszard Piramidowicz

Proc. SPIE. 10325, Optical Fibers and Their Applications 2017

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Proceedings Article | 17 December 2015 Paper

Seven-core active fibre for application in telecommunication satellites

Marta Filipowicz, Marek Napierała, Michał Murawski, Łukasz Ostrowski, Łukasz Szostkiewicz, Michał Szymański, Tadeusz Tenderenda, Krzysztof Anders, Ryszard Piramidowicz, Grzegorz Wójcik, Mariusz Makara, Krzysztof Poturaj, Paweł Mergo, Tomasz Nasiłowski

Proc. SPIE. 9816, Optical Fibers and Their Applications 2015

KEYWORDS: Optical fibers, Fiber amplifiers, Optical amplifiers, Cladding, Signal attenuation, Satellites, Semiconductor lasers, Photonics, Erbium

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Proceedings Article | 25 July 2013 Paper

Synthesis and characterization of polymer composite base on RE3+:Al2O3 nanopowders doped by rare earth metals for application in optoelectronics

P. Polis, A. Jastrzębska, J. Jureczko, A. Jusza, R. Piramidowicz, K. Anders, A. Olszyna, A. Kunicki, W. Fabianowski

Proc. SPIE. 8902, Electron Technology Conference 2013

KEYWORDS: Polymethylmethacrylate, Polymers, Metals, Particles, Crystals, Composites, Manufacturing, Optoelectronics, Ytterbium, Nanocomposites

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Proceedings Article | 4 May 2012 Paper

Luminescent properties of polymer nanocomposites activated with praseodymium-doped nanocrystals

A. Jusza, L. Lipinska, M. Baran, P. Mergo, A. Millan, F. Dieleman, R. Piramidowicz

Proc. SPIE. 8435, Organic Photonics V

KEYWORDS: Visible radiation, Polymethylmethacrylate, Polymers, Luminescence, Composites, Ions, Manufacturing, Nanocrystals, Nanocomposites, Praseodymium

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Proceedings Article | 4 May 2012 Paper

Synthesis and characterization of RE3+:Al2O3 nanopowders for application in the polymer-based composite light sources

P. Polis, A. Jusza, K. Anders, A. Jastrzebska, A. Olszyna, J. Jureczko, W. Fabianowski, A. Kunicki, R. Piramidowicz

Proc. SPIE. 8435, Organic Photonics V

KEYWORDS: Titanium dioxide, Polymers, Luminescence, Composites, Ions, Scanning electron microscopy, Ytterbium, Aluminum, Erbium, Optics manufacturing

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Proceedings Article | 26 April 2012 Paper

Erbium doped low phonon glasses for application in up-conversion fiber lasers

K. Anders, P. Florczyk, R. Stepien, D. Pysz, R. Piramidowicz

Proc. SPIE. 8426, Microstructured and Specialty Optical Fibres

KEYWORDS: Glasses, Luminescence, Ions, Fiber lasers, Semiconductor lasers, Laser spectroscopy, Phonons, Erbium, ZBLAN, Absorption

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Proceedings Article | 26 April 2012 Paper

Development of large core microstructured polymer optical fiber

Adam Filipkowski, Dariusz Pysz, Pawel Gdula, Katrin Welikow, Krzysztof Harasny, Andrew Waddie, Krzysztof Borzycki, Arno Kraft, Ryszard Piramidowicz, Ryszard Stepien, Mohammad Taghizadeh, Ryszard Buczynski

Proc. SPIE. 8426, Microstructured and Specialty Optical Fibres

KEYWORDS: Optical fibers, Polymethylmethacrylate, Optical properties, Cladding, Signal attenuation, Polymers, Glasses, Structured optical fibers, Polymerization, Polymer optical fibers

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Proceedings Article | 26 April 2012 Paper

Microstructured plastic optical fibers for applications in FTTH systems

K. Welikow, P. Gdula, P. Szczepański, R. Buczyński, R. Piramidowicz

Proc. SPIE. 8426, Microstructured and Specialty Optical Fibres

KEYWORDS: Optical fibers, Fiber to the x, Stars, Cladding, Signal attenuation, Resistance, Networks, Telecommunications, Polymer optical fibers, Phase only filters

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Proceedings Article | 7 October 2011 Paper

Modeling transmission parameters of polymer microstructured fibers for applications in FTTH networks

P. Gdula, K. Welikow, P. Szczepański, R. Buczyński, R. Piramidowicz

Proc. SPIE. 8008, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2011

KEYWORDS: Optical fibers, Refractive index, Fiber to the x, Polymethylmethacrylate, Silica, Signal attenuation, Polymers, Networks, Single mode fibers, Polymer optical fibers

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Proceedings Article | 10 June 2011 Paper

Modeling of chromatic dispersion of microstructured fibers with effective index method

K. Welikow, P. Gdula, R. Piramidowicz

Proc. SPIE. 8010, Optical Fibers and Their Applications 2011

KEYWORDS: Optical fibers, MATLAB, Data modeling, Optical properties, Cladding, Dispersion, Dielectrics, Wave propagation, Micro optical fluidics, Radio propagation

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Proceedings Article | 15 September 2010 Paper

Fiber laser with loop reflector

P. Florczyk, K. Anders, P. Gdula, A. Jusza, R. Piramidowicz

Proc. SPIE. 7745, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2010

KEYWORDS: Reflectors, Mirrors, Resonators, Silica, Glasses, Luminescence, Laser development, Fiber lasers, Erbium, Absorption

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Proceedings Article | 15 September 2010 Paper

Design of integrated photonic transmitter for application in fiber-to-the-home systems

Katarzyna Ławniczuk, Ryszard Piramidowicz, Paweł Szczepański, Meint Smit, Xaveer J. Leijtens

Proc. SPIE. 7745, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2010

KEYWORDS: Transmitters, Continuous wave operation, Fiber to the x, Modulation, Waveguides, Reflectivity, Modulators, Photonic integrated circuits, Michelson interferometers

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Proceedings Article | 13 June 2008 Paper

Remote measurements system for applications in photonic materials characterization

P. Lesiak, S. Ertman, D. Budaszewski, A. Domański, T. Woliński, I. Burska, M. Klimczak, R. Piramidowicz, P. Warda, W. Kamiński, R. Sitnik, M. Kujawińska

Proc. SPIE. 7120, Optical Fibers and Their Applications 2008

KEYWORDS: Internet, Human-machine interfaces, Polarization, Databases, Spectroscopy, Luminescence, Poincaré sphere, Data acquisition, Data communications, Material characterization

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Proceedings Article | 28 December 2007 Paper

UV-violet optical transitions and excitation schemes in Ho3+:ZBLAN fibers

Mariusz Klimczak, Marek Cieślik, Marcin Kaczkan, Piotr Witoński, Ryszard Piramidowicz

Proc. SPIE. 6937, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007

KEYWORDS: Optical fibers, Spectroscopy, Photons, Ions, Single photon, Fiber lasers, Pulsed laser operation, ZBLAN, UV optics, Absorption

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Proceedings Article | 1 February 2007 Paper

Operating schemes for Pr3+ and Pr3++Yb3+ activated fluorozirconate fiber lasers in the visible

M. Klimczak, P. Witoński, M. Malinowski, R. Piramidowicz

Proc. SPIE. 6599, Laser Technology VIII: Progress in Lasers

KEYWORDS: Luminescence, Energy transfer, Ions, Chromium, Fiber lasers, Semiconductor lasers, Ytterbium, Systems modeling, Praseodymium, Absorption

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Proceedings Article | 12 October 2006 Paper

Prototyping of virtual photonic laboratory

K. Zieliński, M. Klimczak, M. Kaczkan, P. Witoński, R. Piramidowicz

Proc. SPIE. 6347, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006

KEYWORDS: Internet, Human-machine interfaces, Cameras, Control systems, Semiconductor lasers, Optoelectronics, Telecommunications, Micro optics, Data communications, Prototyping

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Proceedings Article | 12 October 2006 Paper

Operating conditions of dysprosium activated fluorozirconate fiber laser in the visible

M. Klimczak, P. Witoński, W. Żurawski, R. Piramidowicz

Proc. SPIE. 6347, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006

KEYWORDS: Visible radiation, Data modeling, Resonators, Spectroscopy, Luminescence, Ions, Fiber lasers, Numerical analysis, Dysprosium, Absorption

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Proceedings Article | 28 April 2006 Paper

Benchmarking instrumentation tools for the characterization of micro-optics within the EC Network of Excellence on Micro-Optics (NEMO)

H. Ottevaere, N. Destouches, C. Gorecki, T. Kossek, S. Pelli, R. Piramidowicz, P. Szcepanski, M. Kujawinska

Proc. SPIE. 6188, Optical Micro- and Nanometrology in Microsystems Technology

KEYWORDS: Birefringence, Fiber Bragg gratings, Interferometers, Luminescence, Photonics, Micro optics, Microlens, Applied physics, Diffraction gratings, Absorption

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Proceedings Article | 26 April 2006 Paper

Modelling of short-wavelength operation of Nd³⁺doped fluorozirconate glass fiber laser

M. Klimczak, P. Witonski, A. Ryter, R. Piramidowicz

Proc. SPIE. 6159, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments IV

KEYWORDS: Modeling, Mirrors, Ultraviolet radiation, Luminescence, Ions, Reflectivity, Fiber lasers, Laser damage threshold, Neodymium, Absorption

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Proceedings Article | 12 October 2005 Paper

Modelling and optimization of Pr+Yb doped ZBLAN up-conversion fiber laser

R. Piramidowicz, P. Folaron, P. Witonski, M. Klimczak, M. Malinowski

Proc. SPIE. 5958, Lasers and Applications

KEYWORDS: Modeling, Mirrors, Energy transfer, Ions, Fiber lasers, Ytterbium, Optimization (mathematics), Praseodymium, ZBLAN, Absorption

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Proceedings Article | 12 October 2005 Paper

Analysis of multi-photon pumping schemes for Nd:ZBLAN fiber laser operating in the UV and violet

R. Piramidowicz, M. Klimczak, M. Malinowski

Proc. SPIE. 5958, Lasers and Applications

KEYWORDS: Spectroscopy, Ultraviolet radiation, Luminescence, Energy transfer, Ions, Single photon, Fiber lasers, Neodymium, ZBLAN, Absorption

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Proceedings Article | 6 October 2003 Paper

Solid state laser materials for ultraviolet wavelengths

Michal Malinowski, Ryszard Piramidowicz, Wieslaw Wolinski

Proc. SPIE. 5230, Laser Technology VII: Progress in Lasers

KEYWORDS: Glasses, Ultraviolet radiation, Crystals, Ions, Solid state lasers, Upconversion, Laser crystals, Nonlinear crystals, Praseodymium, ZBLAN

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Proceedings Article | 1 November 1997 Paper

Absorption and emission properties of Pr3+ activated Be2La2O5 crystal

R. Piramidowicz, Michal Malinowski, Wieslaw Wolinski

Proc. SPIE. 3176, Tunable Solid State Lasers

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Proceedings Article | 14 August 1997 Paper

Influence of gamma radiation on active materials

Slawomir Kaczmarek, Krzysztof Kopczynski, Tadeusz Lukasiewicz, Zygmunt Frukacz, R. Piramidowicz, Andrej Matkovskii, Dmitry Sugak, A. Durygin

Proc. SPIE. 3186, Laser Technology V: Physics and Research and Development Trends

KEYWORDS: Crystals, Gamma radiation, Er:YAG lasers, Laser crystals, Color centers, Absorption

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Showing 5 of 32 publications

Conference Committee Involvement (2)

Laser Technology 2012: Progress in Lasers

24 September 2012 | Szczecin, Poland

Laser Technology 2012: Applications of Lasers

24 September 2012 | Szczecin, Poland

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