Prof. Alexander Bergmann Profile

Prof. Alexander Bergmann

at Technische Univ Graz

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Author

Publications (9)

Proceedings Article | 30 November 2023 Paper

CART-based optimization of core and cladding layers in silicon nitride photonic integrated circuits towards propagation and bend loss minimization

Jakob Wilhelm Hinum-Wagner, Peter Scheibelhofer, Samuel Marko Hörmann, Christoph Schmidt, Gandolf Feigl, Jochen Kraft, Alexander Bergmann

Proceedings Volume 12794, 127940S (2023) https://doi.org/10.1117/12.3000805

KEYWORDS: Waveguides, Silicon, Semiconducting wafers, Wave propagation, Data modeling, Diffractive optical elements, Cladding, Low pressure chemical vapor deposition, Plasma enhanced chemical vapor deposition, Photonic integrated circuits

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Proceedings Article | 4 October 2023 Presentation + Paper

Photothermal gas sensing with a custom-made, fiber-coupled Fabry-Pérot etalon

M. Tanzer, B. Lang, A. Bergmann

Proceedings Volume 12672, 126720D (2023) https://doi.org/10.1117/12.2676337

KEYWORDS: Sensors, Signal to noise ratio, Fabry–Perot interferometers, Gas sensors, Laser interferometry, Interferometers, Fabry–Perot interferometry, Nitrogen, Miniaturization, Absorption spectroscopy

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Proceedings Article | 28 September 2023 Presentation + Paper

Loss-engineering of a bimodal waveguide interferometer: an optimized silicon nitride platform for chemical and biological sensing

Samuel Hörmann, Jakob Hinum-Wagner, Alexander Bergmann

Proceedings Volume 12664, 1266408 (2023) https://doi.org/10.1117/12.2677385

KEYWORDS: Waveguides, Design and modelling, Scattering, Silicon nitride, Refractive index, Interferometers, Interfaces, Biosensing, Crosstalk, Surface roughness

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Proceedings Article | 28 September 2023 Presentation + Paper

Ab-initio modeling of bend-losses in silicon nitride waveguides from visible to near-infrared

Jakob Hinum-Wagner, Samuel Hoermann, Jürgen Sattelkow, Anton Buchberger, Christian Schörner, Stephan Janka, Georg Rossbach, Desiree Rist, Jochen Kraft, Alexander Bergmann

Proceedings Volume 12664, 1266405 (2023) https://doi.org/10.1117/12.2677328

KEYWORDS: Waveguides, Scattering, Silicon nitride, Modeling, Systems modeling, Wave propagation, Surface roughness, Integrated photonics, Fabrication, Absorption

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Proceedings Article | 28 September 2023 Presentation + Paper

Integrated interferometer design for zero cross-sensitivity to matrix perturbations

Samuel Hörmann, Jakob Hinum-Wagner, Alexander Bergmann

Proceedings Volume 12665, 1266506 (2023) https://doi.org/10.1117/12.2677277

KEYWORDS: Waveguides, Design and modelling, Integrated photonics, Sensors, Photonic integrated circuits, Biosensors, Silicon nitride, Phase shifts, Mach Zehnder interferometers, Crosstalk

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Proceedings Article | 31 May 2023 Presentation + Paper

Design optimization of silicon nitride-based micro-ring resonator systems in a CMOS mass production environment

Jakob Wilhelm Hinum-Wagner, Anton Buchberger, Christoph Schmidt, Christian Schörner, Desiree Rist, Samuel Marko Hoermann, Gandolf Feigl, Iga Malicka, Stephan Janka, Jochen Kraft, Alexander Bergmann

Proceedings Volume 12575, 125750A (2023) https://doi.org/10.1117/12.2665322

KEYWORDS: Semiconducting wafers, Waveguides, Silicon, Resonators, Design and modelling, Fabrication, Simulations, Plasma enhanced chemical vapor deposition, Microrings, Low pressure chemical vapor deposition

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Proceedings Article | 23 May 2023 Paper

Long-term stability study of fiber Bragg grating sensors integrated into a lithium-ion pouch cell

Johanna Unterkofler, Reinhard Klambauer, Alexander Bergmann

Proceedings Volume 12643, 126430N (2023) https://doi.org/10.1117/12.2678298

KEYWORDS: Fiber Bragg gratings, Sensors, Temperature metrology, Bragg wavelengths, Batteries, Capillaries, Calibration, Temperature sensors

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Proceedings Article | 21 August 2020 Poster + Paper

Fast optical humidity sensor based on nanostructured hydrogels

Stefan Cesnik, Anna M. Coclite, Alberto Perrotta, Alessandro Cian, Massimo Tormen, Alexander Bergmann

Proceedings Volume 11467, 114672K (2020) https://doi.org/10.1117/12.2568475

KEYWORDS: Humidity, Sensors, Nanoimprint lithography, Thin films, Diffraction gratings, Diffraction, Nanostructures, Nanostructuring, Sapphire

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Proceedings Article | 21 August 2020 Poster + Paper

Sensitivity optimization of an evanescent field particle detector based on a silicon nitride waveguide

Anton Buchberger, Paul Maierhofer, Jochen Kraft, Marcus Baumgart, Alexander Bergmann

Proceedings Volume 11467, 114672J (2020) https://doi.org/10.1117/12.2566906

KEYWORDS: Waveguides, Particles, Sensors, Silicon, Refractive index, Cladding, Wave propagation, Numerical simulations

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Showing 5 of 9 publications

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