Dr. Radek Helan Profile

Dr. Radek Helan

Head of R&D at Network Group sro

SPIE Involvement:

Author

Publications (12)

Proceedings Article | 22 March 2021 Presentation + Paper

Modular FBG based technical textile for temperature and strain monitoring

Petr Munster, Jiri Prinosil, Radek Helan, Radim Sifta, Tomas Horvath

Proceedings Volume 11591, 115911S (2021) https://doi.org/10.1117/12.2583220

KEYWORDS: Fiber Bragg gratings, Connectors, Optical design, Lens design, GRIN lenses

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Proceedings Article | 28 August 2019 Paper

Smart non-woven textiles with implemented FBG sensors for critical infrastructure protection

Petr Münster, Radim Sifta, Radek Helan

Proceedings Volume 11199, 111990S (2019) https://doi.org/10.1117/12.2541365

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Fiber optics sensors, Optical fibers, Optical sensing

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Proceedings Article | 23 December 2016 Paper

Preparation and measurement of FBG-based length, temperature, and vibration sensors

Bretislav Mikel, Radek Helan, Zdenek Buchta, Michal Jelinek, Ondrej Cip

Proceedings Volume 10142, 101420S (2016) https://doi.org/10.1117/12.2264474

KEYWORDS: Fiber Bragg gratings, Temperature metrology, Sensors, Optical testing, Fiber optics sensors, Optical fibers, Control systems, Switches, Optical filters, Structural health monitoring

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Proceedings Article | 6 January 2015 Paper

Optical fiber sensors for measurement strain and vibration

Bretislav Mikel, Radek Helan, Zdenek Buchta, Milan Holík, Michal Jelinek, Ondrej Cip

Proceedings Volume 9450, 94500G (2015) https://doi.org/10.1117/12.2070480

KEYWORDS: Sensors, Fiber Bragg gratings, Cladding, Fiber optics sensors, Optical fibers, Temperature metrology, Control systems, Optical filters, Structural health monitoring, Switches

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Proceedings Article | 22 August 2014 Paper

Preparation and measurement of TFBG based vibration sensor

Radek Helan, Frantisek Urban, Bretislav Mikel

Proceedings Volume 9286, 92864D (2014) https://doi.org/10.1117/12.2063440

KEYWORDS: Sensors, Cladding, Fiber Bragg gratings, Fiber optics sensors, Spectrum analysis, Light sources, Fusion splicing, Reflectors, Diodes, Optical sensors

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Proceedings Article | 22 August 2014 Paper

First setup of the optical fiber measuring system to monitoring structure health of nuclear power plant

Bretislav Mikel, Radek Helan, Zdenek Buchta, Michal Jelinek, Ondrej Cip

Proceedings Volume 9286, 92864C (2014) https://doi.org/10.1117/12.2060822

KEYWORDS: Structural health monitoring, Optical testing, Optical filters, Switches, Control systems, Temperature metrology, Fiber optics sensors, Optical fibers, Fiber Bragg gratings, Sensors

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Proceedings Article | 18 November 2008 Paper

Design and simulation of fiber Bragg gratings with 760 nm central wavelength

Bretislav Mikel, Radek Helan, Ondrej Cip

Proceedings Volume 7138, 71380Y (2008) https://doi.org/10.1117/12.817999

KEYWORDS: Fiber Bragg gratings, Refractive index, Vertical cavity surface emitting lasers, Apodization, Optical simulations, Optical design, Semiconductor lasers, Reflectivity, Dielectrics, Thin films

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Proceedings Article | 3 October 2008 Paper

Stabilization of semiconductor lasers by fiber Bragg gratings

Bretislav Mikel, Radek Helan, Ondrej Cip, Petr Jedlicka

Proceedings Volume 7155, 71552T (2008) https://doi.org/10.1117/12.814603

KEYWORDS: Fiber Bragg gratings, Vertical cavity surface emitting lasers, Interferometers, Semiconductor lasers, Refractive index, Fiber lasers, Apodization, Diodes, Reflectivity, Distance measurement

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Proceedings Article | 14 September 2007 Paper

Fiber Bragg gratings for laser interferometry with VCSEL diode at 760 nm wavelength

Břetislav Mikel, Radek Helán, Ondřej Čip

Proceedings Volume 6671, 66711F (2007) https://doi.org/10.1117/12.733977

KEYWORDS: Fiber Bragg gratings, Vertical cavity surface emitting lasers, Refractive index, Reflectivity, Apodization, Diodes, Semiconductor lasers, Laser interferometry, Interferometers, Fiber lasers

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Proceedings Article | 25 April 2007 Paper

Design and fabrication of fiber Bragg gratings for vertical cavity surface emitting laser diodes

Břetislav Mikel, Radek Helán, Ondřej Číp

Proceedings Volume 6606, 660607 (2007) https://doi.org/10.1117/12.729505

KEYWORDS: Fiber Bragg gratings, Vertical cavity surface emitting lasers, Apodization, Semiconductor lasers, Refractive index, Reflectivity, Modulation, Photomasks, Diodes, Manufacturing

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Proceedings Article | 18 April 2006 Paper

Simulation of apodized fiber Bragg gratings

Radek Helán, Břetislav Mikel

Proceedings Volume 6180, 61800O (2006) https://doi.org/10.1117/12.675663

KEYWORDS: Fiber Bragg gratings, Apodization, Refractive index, Sensors, Reflectivity, Optical simulations, Semiconductor lasers, Fiber lasers, Wave propagation, Modulation

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Proceedings Article | 14 April 2006 Paper

Stabilization of semiconductor lasers by fiber Bragg gratings for absolute laser interferometry

Bretislav Mikel, Radek Helan, Ondrej Cip

Proceedings Volume 6184, 61841Y (2006) https://doi.org/10.1117/12.662948

KEYWORDS: Fiber Bragg gratings, Vertical cavity surface emitting lasers, Semiconductor lasers, Reflectivity, Photomasks, Apodization, Refractive index, Laser interferometry, Manufacturing, Dielectrics

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Showing 5 of 12 publications

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