Mr. Markku Kapulainen Profile

Markku Kapulainen

at VTT Technical Research Ctr of Finland Ltd

SPIE Involvement:

Author

Publications (35)

Proceedings Article | 13 March 2024 Presentation + Paper

Cellulose optical fiber for human health monitoring

Ari Hokkanen, Markku Kapulainen, Aayush Kumar Jaiswal, Anniina Savolainen, Sourov Chandra, Minna Makki, Olli Ikkala, Hannes Orelma

Proceedings Volume 12835, 128350O (2024) https://doi.org/10.1117/12.3002236

KEYWORDS: Cellulose, Signal attenuation, Sensors, Optical fibers, Optical sensing

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Proceedings Article | 12 March 2024 Presentation + Paper

Silicon photonics with ultra-broadband operation from 1.2 to 2.4 µm wavelength

Timo Aalto, Markku Kapulainen, Fei Sun, Mikko Harjanne, Srivathsa Bhat, Katherine Bryant, Yisbel Marin

Proceedings Volume 12891, 1289105 (2024) https://doi.org/10.1117/12.3000158

KEYWORDS: Waveguides, Photonic integrated circuits, Arrayed waveguide gratings, Echelle gratings, Silicon, Polarization, Silicon photonics, Light sources, Single mode fibers

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Proceedings Article | 12 March 2024 Presentation + Paper

Power-efficient thermo-optic phase shifters with cavity-SOI

Päivi Heimala, Mikko Harjanne, Somnath Paul, Markku Kapulainen, Fei Sun, Juha Larismaa, Timo Aalto

Proceedings Volume 12891, 128910G (2024) https://doi.org/10.1117/12.3002326

KEYWORDS: Silicon photonics, Integrated optics, Waveguides, Phase shifts, Silicon, Semiconducting wafers, Wafer bonding, Power consumption, Fabrication

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Proceedings Article | 17 March 2023 Poster + Paper

Monolithically integratable broad-band anti-reflection stacks for Si photonics platforms

Fei Sun, Mikko Harjanne, Päivi Heimala, Markku Kapulainen, Timo Aalto

Proceedings Volume 12424, 124240Y (2023) https://doi.org/10.1117/12.2647717

KEYWORDS: Antireflective coatings, Silicon photonics, Photonics, Waveguides, Optical communications, Integrated optics, Integrated optical circuits, Photonic integrated circuits

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Proceedings Article | 13 March 2023 Presentation + Paper

Broadband and polarization-independent waveguide-fiber coupling

Timo Aalto, Tomi Hassinen, Markku Kapulainen, Aki Mäyrä, Hannu Vasama, Päivi Heimala

Proceedings Volume 12426, 124260O (2023) https://doi.org/10.1117/12.2651389

KEYWORDS: Waveguides, Polymers, Lenses, Polarization, Polishing, Single mode fibers, Lens design, Silicon, Fabrication, Silicon photonics

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Proceedings Article | 2 March 2022 Presentation + Paper

Cellulose optical fiber for sensing applications

Ari Hokkanen, Markku Kapulainen, Aayush Kumar Jaiswal, Ville Hynninen, Nonappa Nonappa, Olli Ikkala, Hannes Orelma

Proceedings Volume 11953, 1195302 (2022) https://doi.org/10.1117/12.2609344

KEYWORDS: Optical fibers, Humidity, Sensors

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Proceedings Article | 5 March 2021 Presentation + Paper

Polarization splitters for micron-scale silicon photonics

Dura Shahwar, Matteo Cherchi, Mikko Harjanne, Markku Kapulainen, Timo Aalto

Proceedings Volume 11691, 1169104 (2021) https://doi.org/10.1117/12.2576868

KEYWORDS: Polarization, Silicon photonics, Waveguides, Birefringence, Receivers, Phase shifts, Optical isolators, Multiplexing, Mach-Zehnder interferometers, Interferometry

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Proceedings Article | 26 February 2020 Paper

Monolithic integration of up to 40 GHz Ge photodetectors in 3um SOI

Tapani Vehmas, Markku Kapulainen, Päivi Heimala, Giovanni Delrosso, Fei Sun, Feng Gao, Timo Aalto

Proceedings Volume 11285, 112850V (2020) https://doi.org/10.1117/12.2542165

KEYWORDS: Sensors, Germanium, Waveguides, Silicon, Diffusion, Capacitance, Oxides, Photodetectors, Electrons, Chemical mechanical planarization

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Proceedings Article | 26 February 2020 Presentation + Paper

Flat-top interleavers based on single MMIs

Matteo Cherchi, Fei Sun, Markku Kapulainen, Mikko Harjanne, Timo Aalto

Proceedings Volume 11285, 112850G (2020) https://doi.org/10.1117/12.2544784

KEYWORDS: Waveguides, Phase shifts, Silicon, Directional couplers, Silicon photonics

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Proceedings Article | 27 February 2019 Presentation + Paper

Si photonics using micron-size waveguides

Timo Aalto, Matteo Cherchi, Mikko Harjanne, Fei Sun, Tapani Vehmas, Srivathsa Bhat, Markku Kapulainen, Ari Hokkanen, Lauri Lehtimäki, Heikki Holmberg, Atte Haapalinna

Proceedings Volume 10914, 109140B (2019) https://doi.org/10.1117/12.2516289

KEYWORDS: Waveguides, Silicon, Polarization, Mirrors, Vertical cavity surface emitting lasers, Sensors, Modulators, Semiconducting wafers, Silicon photonics, Germanium

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Proceedings Article | 20 February 2017 Presentation + Paper

Fabrication tolerant flat-top interleavers

Matteo Cherchi, Fei Sun, Markku Kapulainen, Tapani Vehmas, Mikko Harjanne, Timo Aalto

Proceedings Volume 10108, 101080V (2017) https://doi.org/10.1117/12.2252110

KEYWORDS: Waveguides, Interferometers, Tolerancing, Semiconducting wafers, Photonic integrated circuits, Integrated circuits, Silicon, Silicon photonics, Mach-Zehnder interferometers, Resonators, Brain-machine interfaces, Etching, Photomasks, Oxides, Optical filters

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Proceedings Article | 20 February 2017 Presentation + Paper

Second order add/drop filter with a single ring resonator

Matteo Cherchi, Fei Sun, Markku Kapulainen, Tapani Vehmas, Mikko Harjanne, Timo Aalto

Proceedings Volume 10108, 101080B (2017) https://doi.org/10.1117/12.2252146

KEYWORDS: Microrings, Resonators, Waveguides, Interferometers, Silicon photonics, Optical filters, Photonic integrated circuits, Directional couplers, Reflectors, Laser applications, Mach-Zehnder interferometers, Silicon, Brain-machine interfaces, Semiconducting wafers, Etching, Photomasks, Oxides

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Proceedings Article | 14 March 2016 Paper

Flat-top MZI filters: a novel robust design based on MMI splitters

Matteo Cherchi, Mikko Harjanne, Sami Ylinen, Markku Kapulainen, Tapani Vehmas, Timo Aalto

Proceedings Volume 9752, 975210 (2016) https://doi.org/10.1117/12.2210937

KEYWORDS: Waveguides, Interferometers, Directional couplers, Tolerancing, Interferometry, Silicon photonics, Polarization, Device simulation, Silicon, Etching, Phase shifts, Semiconducting wafers, Optical filters

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Proceedings Article | 14 March 2016 Paper

Chiral spiral waveguides based on MMI crossings: theory and experiments

Matteo Cherchi, Sami Ylinen, Mikko Harjanne, Markku Kapulainen, Tapani Vehmas, Timo Aalto

Proceedings Volume 9752, 975215 (2016) https://doi.org/10.1117/12.2210945

KEYWORDS: Waveguides, Light wave propagation, Gyroscopes, Silicon, Integrated optics, Wave propagation, Silicon photonics, Etching, Semiconducting wafers, Oxides, Photomasks

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Proceedings Article | 3 April 2015 Paper

Multi-wavelength transceiver integration on SOI for high-performance computing system applications

Timo Aalto, Mikko Harjanne, Sami Ylinen, Markku Kapulainen, Tapani Vehmas, Matteo Cherchi, Christian Neumeyr, Markus Ortsiefer, Antonio Malacarne

Proceedings Volume 9368, 93680B (2015) https://doi.org/10.1117/12.2079682

KEYWORDS: Vertical cavity surface emitting lasers, Waveguides, Optoelectronics, Silicon, Polymers, Transceivers, Single mode fibers, Integrated optics, Computing systems, Modulation

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Proceedings Article | 27 February 2015 Paper

Comparison of different types of MMI-resonators fabricated on a micron-scale SOI platform

Matteo Cherchi, Mikko Harjanne, Sami Ylinen, Markku Kapulainen, Tapani Vehmas, Timo Aalto

Proceedings Volume 9367, 936713 (2015) https://doi.org/10.1117/12.2079606

KEYWORDS: Brain-machine interfaces, Resonators, Waveguides, Mirrors, Reflectors, Silicon, Reflectivity, Aluminum, Metals, Etching

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Proceedings Article | 27 February 2015 Paper

Low-loss delay lines with small footprint on a micron-scale SOI platform

Matteo Cherchi, Mikko Harjanne, Konstantinos Vyrsokinos, Sami Ylinen, Markku Kapulainen, Tapani Vehmas, Timo Aalto

Proceedings Volume 9367, 93670A (2015) https://doi.org/10.1117/12.2079560

KEYWORDS: Waveguides, Silicon, Eye, Brain-machine interfaces, Semiconducting wafers, Signal attenuation, Demodulation, Etching, Interferometers, Oxides

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Proceedings Article | 27 February 2015 Paper

Total internal reflection mirrors with ultra-low losses in 3 µm thick SOI waveguides

Timo Aalto, Mikko Harjanne, Sami Ylinen, Markku Kapulainen, Tapani Vehmas, Matteo Cherchi

Proceedings Volume 9367, 93670B (2015) https://doi.org/10.1117/12.2079748

KEYWORDS: Mirrors, Waveguides, Photonic integrated circuits, Polarization, Silicon, Dielectric polarization, Semiconducting wafers, Neodymium, Light wave propagation, Silicon photonics

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