Prof. Roman S. Dabrowski Profile

Prof. Roman S. Dabrowski

at Wojskowa Akademia Techniczna

SPIE Involvement:

Author

Publications (108)

Proceedings Article | 28 August 2019 Paper

Enhanced electric field sensing with metallic nanoparticles-doped photonic liquid crystal fibers

Karolina Bednarska, Agata Budaszewska, Daniel Budaszewski, Miłosz Chychłowski, Sławomir Ertman, Piotr Lesiak, Paulina Oszwa, Bartosz Bartosewicz, Bartłomiej Jankiewicz, Roman Dąbrowski, Tomasz Wolinski

Proceedings Volume 11199, 111992V (2019) https://doi.org/10.1117/12.2539989

KEYWORDS: Gold, Nanoparticles, Electrodes, Liquid crystals, Silver, Photonic liquid crystal fibers, Photonic crystal fibers

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Proceedings Article | 15 February 2017 Paper

Recent advances in liquid-crystal fiber optics and photonics

T. Woliński, A. Siarkowska, D. Budaszewski, M. Chychłowski, A. Czapla, S. Ertman, P. Lesiak, K. Rutkowska, K. Orzechowski, M. Sala-Tefelska, M. Sierakowski, R. Dąbrowski, B. Bartosewicz, B. Jankiewicz, E. Nowinowski-Kruszelnicki, P. Mergo

Proceedings Volume 10125, 101250W (2017) https://doi.org/10.1117/12.2261115

KEYWORDS: Liquid crystals, Photonic crystal fibers, Fiber optics, Photonics, Structured optical fibers, Photonic liquid crystal fibers, Nanoparticles, Polarization, Photonic crystals, Liquids, Optical fibers, Gold, Refractive index

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Proceedings Article | 25 October 2013 Paper

Pi of the Sky—robotic telescope

A. Ćwiek, T. Batsch, H. Czyrkowski, M. Ćwiok, R. Dąbrowski, G. Kasprowicz, A. Majcher, K. Małek, L. Mankiewicz, K. Nawrocki, Ł. Obara, R. Opiela, L. Piotrowski, M. Siudek, M. Sokołowski, R. Wawrzaszek, A. Żarnecki

Proceedings Volume 8903, 890312 (2013) https://doi.org/10.1117/12.2035455

KEYWORDS: Sensors, Telescopes, Stars, Robotics, Prototyping, Cameras, Space telescopes, Algorithm development, Databases, Physics

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Proceedings Article | 20 May 2013 Paper

Electric control of state of polarization in index-guiding photonic liquid crystal fibers

Slawomir Ertman, Agata Siarkowska, Dariusz Pysz, Ryszard Buczyński, Edward Nowinowski-Kruszelnicki, Roman Dąbrowski, Tomasz Woliński

Proceedings Volume 8794, 87942D (2013) https://doi.org/10.1117/12.2026090

KEYWORDS: Polarization, Electrodes, Photonic liquid crystal fibers, Birefringence, Liquid crystals, Polarization control, Signal attenuation, Wave plates, Waveguides, Optical spheres

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Proceedings Article | 20 May 2013 Paper

Attenuation of the photonic liquid crystal fibers with various core diameters

Marzena Tefelska, Slawomir Ertman, Tomasz Wolinski, Pawel Mergo, Roman Dabrowski

Proceedings Volume 8794, 879429 (2013) https://doi.org/10.1117/12.2025901

KEYWORDS: Signal attenuation, Liquid crystals, Photonic crystal fibers, Solids, Photonic liquid crystal fibers, Refractive index, Light scattering, Silica, Glasses, Scattering

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SPIE Journal Paper | 9 May 2013

On alignment of nematic liquid crystals infiltrating chiral sculptured thin films

Hadar Reisman, Drew Pulsifer, Raul Martin-Palma, Akhlesh Lakhtakia, Roman Dąbrowski, Ibrahim Abdulhalim

JNP, Vol. 7, Issue 01, 073591, (May 2013) https://doi.org/10.1117/12.10.1117/1.JNP.7.073591

KEYWORDS: Liquid crystals, Molecules, Thin films, Refractive index, Reflectivity, Chalcogenide glass, Glasses, Near infrared, Ultraviolet radiation, Optical fibers

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Proceedings Article | 10 October 2012 Paper

On alignment of nematic liquid crystals infiltrating chiral sculptured thin films

Hadar Krupsky Reisman, Drew Pulsifer, Raúl Martín-Palma, Akhlesh Lakhtakia, Roman Dąbrowski, Ibrahim Abdulhalim

Proceedings Volume 8465, 84651E (2012) https://doi.org/10.1117/12.964414

KEYWORDS: Liquid crystals, Molecules, Reflectivity, Refractive index, Thin films, Chalcogenide glass, Optical fibers, Glasses, Near infrared, Polarizers

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Proceedings Article | 11 February 2012 Paper

Electrical tuning of index-guiding photonic liquid crystal fibers

Slawomir Ertman, Agata Siarkowska, Marzena Tefelska, Milosz Chychlowski, Dariusz Pysz, Ryszard Buczynski, Edward Nowinowski-Kruszelnicki, Roman Dabrowski, Tomasz Wolinski

Proceedings Volume 8279, 82790T (2012) https://doi.org/10.1117/12.908973

KEYWORDS: Refractive index, Glasses, Liquid crystals, Birefringence, Signal attenuation, Photonic liquid crystal fibers, Polarization, Electrodes, Silica, Wave plates

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SPIE Journal Paper | 1 August 2011 Open Access

Errata: Electro-optics of ferro- and antiferroelectric liquid crystals in asymmetric cells

Noureddine Bennis, Anna Spadlo, Eva Oton, Xabier Quintana, Jose Otón, Roman Dabrowski

OE, Vol. 50, Issue 08, 089801, (August 2011) https://doi.org/10.1117/12.10.1117/1.3624953

KEYWORDS: Electro optics, Liquid crystals, Optical engineering, Chemistry

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SPIE Journal Paper | 1 August 2011

Electro-optics of ferro- and antiferroelectric liquid crystals in asymmetric cells

Noureddine Bennis, Anna Sapadlo, Eva Oton, Xabier Quintana, Jose Otón, Roman Dabrowski

OE, Vol. 50, Issue 08, 081205, (August 2011) https://doi.org/10.1117/12.10.1117/1.3564683

KEYWORDS: Electro optics, Liquid crystals, Switching, Optical alignment, Ferroelectric LCDs, Video, Analog electronics, LCDs, Chemistry, Manufacturing

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Proceedings Article | 18 May 2011 Paper

Liquid crystal long-period fiber grating as a sensing element for electric field and temperature measurements

Aleksandra Czapla, Wojtek Bock, Tomasz Woliński, Roman Dąbrowski, Edward Nowinowski-Kruszelnicki

Proceedings Volume 7753, 77536L (2011) https://doi.org/10.1117/12.887546

KEYWORDS: Cladding, Liquid crystals, Temperature metrology, Refractive index, Signal attenuation, Silica, Capillaries, Switching, Structured optical fibers, Optical components

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Proceedings Article | 17 May 2011 Paper

Index guiding photonic liquid crystal fibers for application in fiber optic sensing setups

Slawomir Ertman, Marzena Tefelska, Milosz Chychlowski, Dariusz Pysz, Ryszard Buczynski, Edward Nowinowski-Kruszelnicki, Roman Dabrowski, Tomasz Wolinski

Proceedings Volume 7753, 775342 (2011) https://doi.org/10.1117/12.886082

KEYWORDS: Refractive index, Liquid crystals, Glasses, Polarization, Signal attenuation, Photonic liquid crystal fibers, Birefringence, Cladding, Wave plates, Fiber optics sensors

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Proceedings Article | 2 February 2011 Open Access

Liquid crystal photonic crystal fibers and their applications

T. Woliński, S. Ertman, D. Budaszewski, M. Chychłowski, A. Czapla, R. Dabrowski, A. W. Domański, P. Mergo, E. Nowinowski-Kruszelnicki, K. A. Rutkowska, M. Sierakowski, M. Tefelska

Proceedings Volume 7955, 795502 (2011) https://doi.org/10.1117/12.885527

KEYWORDS: Liquid crystals, Photonic crystal fibers, Photonic liquid crystal fibers, Polarization, Photonic devices, Birefringence, Refractive index, Glasses, Waveguides, Polarizers

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Proceedings Article | 6 November 2008 Paper

Long-period fiber gratings using liquid crystals

Aleksandra Czapla, Tomasz Wolinski, Wojtek Bock, Edward Nowinowski-Kruszelnicki, Roman Dabrowski, Jan Wojcik

Proceedings Volume 7124, 712406 (2008) https://doi.org/10.1117/12.817933

KEYWORDS: Cladding, Liquid crystals, Signal attenuation, Molecules, Optical fibers, Refractive index, Electronic support measures, Photonic crystal fibers, Optical properties, Silica

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Proceedings Article | 13 June 2008 Paper

Hydrostatic pressure effects in photonic liquid crystal fibers

Marzena Tefelska, Miłosz Chychłowski, Aleksandra Czapla, Roman Dąbrowski, Sławomir Ertman, Edward Nowinowski-Kruszelnicki, Jan Wójcik, Tomasz Woliński

Proceedings Volume 7120, 712008 (2008) https://doi.org/10.1117/12.804510

KEYWORDS: Liquid crystals, Photonic crystal fibers, Photonic liquid crystal fibers, Refractive index, Polarization, Fiber optics sensors, Sensors, Photonic crystals, Capillaries, Structured optical fibers

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Proceedings Article | 16 May 2008 Paper

Photonic liquid crystal fibers for electric field and hydrostatic pressure sensing

Tomasz Woliński, S. Ertman, M. Tefelska, P. Lesiak, A. Czapla, A. Domański, E. Nowinowski-Kruszelnicki, R. Dąbrowski, J. Wójcik

Proceedings Volume 7004, 70043W (2008) https://doi.org/10.1117/12.786039

KEYWORDS: Liquid crystals, Optical fibers, Refractive index, Sensors, Photonic crystal fibers, Photonic liquid crystal fibers, Electric field sensors, Cladding, Optical properties, Fiber optics sensors

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Proceedings Article | 9 May 2007 Paper

Spectral properties of photonic liquid crystal fibers

T. Woliński, A. Czapla, S. Ertman, A. Domański, J. Wójcik, R. Dąbrowski

Proceedings Volume 6587, 658705 (2007) https://doi.org/10.1117/12.723747

KEYWORDS: Liquid crystals, Refractive index, Photonic crystal fibers, Birefringence, Photonic liquid crystal fibers, Light wave propagation, Temperature metrology, Cladding, Polarization, Modulation

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Proceedings Article | 9 April 2007 Paper

Influence of temperature and electric field on polarization properties in photonic liquid crystal fibers

Katarzyna Nowecka, Piotr Lesiak, Tomasz Woliński, Roman Dąbrowski

Proceedings Volume 6608, 66080J (2007) https://doi.org/10.1117/12.739362

KEYWORDS: Polarization, Liquid crystals, Photonic liquid crystal fibers, Birefringence, Dispersion, Photonic crystal fibers, Dielectric polarization, Temperature metrology, Optical fibers, Refractive index

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Proceedings Article | 9 April 2007 Paper

Influence of temperature and electrical fields on spectral properties of microstructured optical liquid-crystals fibers

Aleksandra Czapla, Sławomir Ertman, Tomasz Woliński, Jan Wójcik, Roman Dąbrowski

Proceedings Volume 6608, 660806 (2007) https://doi.org/10.1117/12.739322

KEYWORDS: Optical fibers, Birefringence, Liquid crystals, Refractive index, Temperature metrology, Photonic crystal fibers, Micro optical fluidics, Waveguides, Structured optical fibers, Wave propagation

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Proceedings Article | 12 October 2006 Paper

New low noise CCD cameras for Pi-of-the-Sky project

G. Kasprowicz, H. Czyrkowski, R. Dabrowski, W. Dominik, L. Mankiewicz, K. Pozniak, R. Romaniuk, P. Sitek, M. Sokolowski, R. Sulej, J. Uzycki, G. Wrochna

Proceedings Volume 6347, 63470N (2006) https://doi.org/10.1117/12.714861

KEYWORDS: Cameras, Charge-coupled devices, Signal processing, Sensors, Analog electronics, CCD cameras, Field programmable gate arrays, CCD image sensors, Video processing, Camera shutters

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Proceedings Article | 12 October 2006 Paper

Study of rapidly varying astrophysical objects with the Pi-of-the-Sky apparatus

M. Biskup, M. Cwiok, H. Czyrkowski, R. Dabrowski, W. Dominik, G. Kasprowic, K. Malek, L. Mankiewicz, M. Molak, J. Mrowca-Ciulacz, K. Nawrocki, L. Piotrowski, P. Sitek, M. Sokolowski, J. Uzycki, G. Wrochna, A. Zarnecki

Proceedings Volume 6347, 63470L (2006) https://doi.org/10.1117/12.714548

KEYWORDS: Stars, Cameras, Databases, Detection and tracking algorithms, Data analysis, Prototyping, Telescopes, Algorithm development, Satellites, Sensors

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Proceedings Article | 26 April 2006 Paper

Low noise CCD cameras for wide field astronomy

A. Burd, H. Czyrkowski, R. Dabrowski, W. Dominik, M. Grajda, G. Kasprowicz, L. Mankiewicz, S. Stankiewicz, G. Wrochna

Proceedings Volume 6159, 61590I (2006) https://doi.org/10.1117/12.674872

KEYWORDS: Signal processing, Sensors, CCD cameras, Astronomy, Charge-coupled devices, Cameras, CCD image sensors, Video processing, Analog electronics, Field programmable gate arrays

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Proceedings Article | 26 April 2006 Paper

"Pi of the sky": robotic search for cosmic flashes

A. Burd, M. Cwiok, H. Czyrkowski, R. Dabrowski, W. Dominik, M. Grajda, M. Gorski, G. Kasprowicz, K. Kwiecinska, K. Malek, L. Mankiewicz, M. Molak, J. Mrowca-Ciulacz, K. Nawrocki, B. Pilecki, L. Piotrowski, K. Pozniak, R. Romaniuk, M. Sokolowski, S. Stankiewicz, D. Szczygiel, J. Uzycki, G. Wrochna

Proceedings Volume 6159, 61590H (2006) https://doi.org/10.1117/12.674864

KEYWORDS: Cameras, Satellites, Robotics, Telescopes, Space telescopes, Sensors, Gamma radiation, Prototyping, Stars, Physics

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Proceedings Article | 18 April 2006 Paper

Polarization properties of photonic liquid crystal fibers

Tomasz Wolinski, Piotr Lesiak, Katarzyna Slusarz, Slawomir Ertman, Andrzej Domanski, Edward Nowinowski-Kruszelnicki, Roman Dabrowski

Proceedings Volume 6182, 618222 (2006) https://doi.org/10.1117/12.664885

KEYWORDS: Polarization, Liquid crystals, Birefringence, Refractive index, Photonic liquid crystal fibers, Photonic crystal fibers, Crystals, Dispersion, Optical spheres, Liquids

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Proceedings Article | 12 October 2005 Paper

Influence of electrical field on light propagation in microstructured liquid crystal fibers

S. Ertman, T. Wolinski, K. Szaniawska, P. Lesiak, A. Domanski, R. Dabrowski, E. Nowinowski-Kruszelnicki, J. Wojcik

Proceedings Volume 5950, 59501D (2005) https://doi.org/10.1117/12.622148

KEYWORDS: Liquid crystals, Optical fibers, Refractive index, Molecules, Geometrical optics, Solids, Ocean optics, Optical properties, Photonic crystal fibers, Micro optical fluidics

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Proceedings Article | 7 October 2005 Paper

Pi of the sky: search for optical flashes of extragallactic origin

A. Burd, M. Cwiok, H. Czyrkowski, R. Dabrowski, W. Dominik, M. Grajda, M. Gorski, G. Kasprowicz, K. Krupska, K. Kwiecinska, L. Mankiewicz, M. Molak, J. Mrowca-Ciulacz, K. Nawrocki, B. Pilecki, L.W. Piotrowski, K. Pozniak, R. Romaniuk, M. Sokolowski, S. Stankiewicz, D. Szczygiel, J. Uzycki, G. Wrochna

Proceedings Volume 5948, 59481H (2005) https://doi.org/10.1117/12.622860

KEYWORDS: Cameras, Satellites, Telescopes, Sensors, Stars, Gamma radiation, Prototyping, Geometrical optics, Lanthanum, CCD cameras

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Proceedings Article | 7 October 2005 Paper

Electric birefringence of some nematic liquid crystals having hexyl tail

H. Khoshsima, H. Tajalli, A. Ghanadzadeh, R. Dabrowski

Proceedings Volume 5947, 59470P (2005) https://doi.org/10.1117/12.620884

KEYWORDS: Liquid crystals, Birefringence, Temperature metrology, Kerr effect, Electro optics, Anisotropy, Dielectrics, Molecules, Electrodes, Chemistry

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Proceedings Article | 7 October 2005 Paper

Comparison of the mesogenic and physical properties of polar tolanes, biphenyls, and terphenyls

A. Spadło, R. Dąbrowski, A. Ziółek, P. Kula, S. Urban, S. Gauza, Shin-Tson Wu

Proceedings Volume 5947, 594711 (2005) https://doi.org/10.1117/12.622878

KEYWORDS: Chromium, Fluorine, Birefringence, Liquid crystals, Refractive index, Temperature metrology, Electro optics, Chemical species, Liquids, Crystals

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Proceedings Article | 21 September 2005 Paper

Structure and electrooptical properties of orthoconic antiferroelectric liquid crystalline materials

R. Dąbrowski, K. Czupryński, J. Gąsowska, M. Tykarska, P. Kula, J. Dziaduszek, J. Oton, P. Castillo, N. Benis

Proceedings Volume 5947, 59470C (2005) https://doi.org/10.1117/12.619805

KEYWORDS: Fluorine, Chromium, Molecules, Shape memory alloys, Liquid crystals, Electro optics, Chemical species, Temperature metrology, Multiplexing, Reflection

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Proceedings Article | 21 September 2005 Paper

High birefringence liquid crystals for photonic applications

S. Gauza, C. Wen, S. Wu, R. Dabrowski, C. Hsu, C. Catanescu, L. Chien

Proceedings Volume 5947, 594706 (2005) https://doi.org/10.1117/12.613986

KEYWORDS: Birefringence, Liquid crystals, Absorption, Ultraviolet radiation, Dielectrics, Polarizability, Anisotropy, Molecules, Chromium, Temperature metrology

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Proceedings Article | 16 September 2005 Paper

Temperature tuning in photonic liquid crystal fibers

Katarzyna Szaniawska, Tomasz Wolinski, Slawomir Ertman, Piotr Lesiak, Andrzej Domanski, Roman Dabrowski, Edward Nowinowski-Kruszelnicki, Jan Wojcik

Proceedings Volume 5947, 594705 (2005) https://doi.org/10.1117/12.622279

KEYWORDS: Liquid crystals, Refractive index, Optical fibers, Silica, Geometrical optics, Photonic liquid crystal fibers, Cladding, Light wave propagation, Temperature metrology, Photonic crystal fibers

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Proceedings Article | 20 August 2005 Paper

Spectral and polarization properties of microstructured liquid crystal fibers

Tomasz Wolinski, Katarzyna Szaniawska, Slawomir Ertman, Piotr Lesiak, Andrzej Domanski, Roman Dabrowski, Edward Nowinowski-Kruszelnicki, Jan Wojcik

Proceedings Volume 5936, 59360S (2005) https://doi.org/10.1117/12.620779

KEYWORDS: Liquid crystals, Optical fibers, Refractive index, Polarization, Geometrical optics, Silica, Photonic crystal fibers, Cladding, Light wave propagation, Switching

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Proceedings Article | 23 May 2005 Paper

Influence of temperature and electrical fields on propagation properties of photonic liquid-crystal fibers

T. Wolinski, Katarzyna Szaniawska, K. Bondarczuk, S. Ertman, P. Lesiak, A. Domanski, R. Dabrowski, E. Nowinowski-Kruszelnicki, Jan Wojcik

Proceedings Volume 5855, (2005) https://doi.org/10.1117/12.623425

KEYWORDS: Liquid crystals, Photonic crystal fibers, Optical fibers, Light wave propagation, Temperature metrology, Cladding, Capillaries, Photonic crystals, Liquids, Refractive index

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Proceedings Article | 16 December 2004 Paper

Surface charge screening and boundary conditions for high two-beam coupling gain in pure liquid crystals

Andriy Dyadyusha, Malgosia Kaczmarek, Graham Gilchrist, Giampaolo D'Alessandro, Janusz Parka, Roman Dabrowski

Proceedings Volume 5621, (2004) https://doi.org/10.1117/12.578530

KEYWORDS: Liquid crystals, Polymers, Crystals, Modulation, Liquids, Diffraction, Interfaces, Laser scattering, Scattering, Laser beam diagnostics

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Proceedings Article | 15 October 2004 Paper

Propagation effects in a photonic crystal fiber filled with a low-birefringence liquid crystal

Tomasz Wolinski, Krzysztof Bondarczuk, Katarzyna Szaniawska, Piotr Lesiak, Andrzej Domanski, Roman Dabrowski, Edward Nowinowski-Kruszelnicki, Jan Wojcik

Proceedings Volume 5518, (2004) https://doi.org/10.1117/12.568415

KEYWORDS: Liquid crystals, Photonic crystal fibers, Refractive index, Light wave propagation, Capillaries, Visible radiation, Wave propagation, Photonic liquid crystal fibers, Cladding, Molecules

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