Dr. Marc Schneider Profile

Dr. Marc Schneider

at Karlsruhe Institute of Technology

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 26 August 2024 Poster + Paper

Nanostructured metamaterials for the thermal and electromagnetic isolation of cryostats

L. Vivas, D. Ramos, C. Martín-Rubio, A. Rivelles, L. Madueño, A. Ruiz-Clavijo, A. Diaz, M. Schneider, B. Plaza, D. Poyatos, J. C. del Hoyo, O. Caballero-Calero, M. Worgull, S. Martin, B. Martín, M. Maicas, D. Navas, M. Martín-González, R. Sanz

Proceedings Volume 13100, 1310072 (2024) https://doi.org/10.1117/12.3019094

KEYWORDS: Nanostructuring, Magnetism, Electromagnetic metamaterials, Electromagnetism, Nanotubes, Scanning electron microscopy, Cryostats, Nanocomposites, Electrical conductivity, Aluminum

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Proceedings Article | 28 February 2020 Paper

A high-performance Echelle grating de-multiplexer based on two stigmatic points and its flat-top solution

Y. Zhang, M. Schneider, D. Karnick, L. Eisenblätter, T. Kühner, M. Weber

Proceedings Volume 11286, 112860Y (2020) https://doi.org/10.1117/12.2544694

KEYWORDS: Demultiplexers, Optical design, Optical filters, Waveguides, Diffraction gratings, Reflectors, Silicon, Interferometers, Multimode interference devices

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Proceedings Article | 28 February 2020 Presentation + Paper

Building blocks of a scalable and radiation-hardened integrated transmitter unit based on 250 nm SOI

Y. Zhang, M. Schneider, D. Karnick, L. Eisenblätter, T. Kühner, M. Weber

Proceedings Volume 11286, 112860P (2020) https://doi.org/10.1117/12.2544663

KEYWORDS: Transmitters, Modulators, Wavelength division multiplexing, Silicon, Modulation, Doping, Photonics, Phase shifts

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Proceedings Article | 27 February 2019 Presentation + Paper

Low-loss and robust DWDM Echelle grating (de-)multiplexers in SOI technology

Y. Zhang, M. Schneider, D. Karnick, L. Eisenblätter, T. Kühner, M. Weber

Proceedings Volume 10914, 109140J (2019) https://doi.org/10.1117/12.2507433

KEYWORDS: Diffraction gratings, Waveguides, Optical design, Diffraction, Wavelength division multiplexing, MATLAB, Reflectors, Microscopes, Dense wavelength division multiplexing

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Proceedings Article | 19 September 2018 Presentation + Paper

Towards mass fabrication of hot embossed plant surface texture replicas as photovoltaic cover layers

Benjamin Fritz, Markus Guttmann, Pere Casas Soler, Aiman Roslizar, Malte Langenhorst, Marc Schneider, Ulrich Paetzold, Bryce Richards, Ulrich Lemmer, Ruben Huenig, Guillaume Gomard

Proceedings Volume 10730, 107300J (2018) https://doi.org/10.1117/12.2320555

KEYWORDS: Reflectivity, Polymers, Polymethylmethacrylate, Solar cells, Coating, Copper indium gallium selenide, Nickel, Photovoltaics, Light harvesting, Thin film solar cells

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SPIE Journal Paper | 22 July 2016

Hot-embossing replication of self-centering optical fiber alignment structures prototyped by deep proton writing

Evert Ebraert, Markus Wissmann, Markus Guttmann, Alexander Kolew, Matthias Worgull, Nicole Barié, Marc Schneider, Andreas Hofmann, Stefano Beri, Jan Watté, Hugo Thienpont, Jürgen Van Erps

OE, Vol. 55, Issue 07, 076112, (July 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.7.076112

KEYWORDS: Polymethylmethacrylate, Prototyping, Connectors, Optical alignment, Optical fibers, Silicon, Single mode fibers, Surface roughness, Structured optical fibers, Micro cutting

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Proceedings Article | 13 May 2016 Presentation + Paper

Echelle grating for silicon photonics applications: integration of electron beam lithography in the process flow and first results

Mathias Kaschel, Florian Letzkus, Jörg Butschke, Piotr Skwierawski, Marc Schneider, Marc Weber

Proceedings Volume 9891, 98911V (2016) https://doi.org/10.1117/12.2228817

KEYWORDS: Modulators, Waveguides, Multiplexers, Optical design

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Proceedings Article | 27 April 2016 Paper

Replication of self-centering optical fiber alignment structures using hot embossing

Evert Ebraert, Markus Wissmann, Nicole Barié, Markus Guttmann, Marc Schneider, Alexander Kolew, Matthias Worgull, Stefano Beri, Jan Watté, Hugo Thienpont, Jürgen Van Erps

Proceedings Volume 9888, 98880M (2016) https://doi.org/10.1117/12.2227685

KEYWORDS: Connectors, Electroplating, Single mode fibers, Connectors, Nickel, Surface roughness, Adhesives, Copper

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With the demand for broadband connectivity on the rise due to various services like video-on-demand and cloud computing becoming more popular, the need for better connectivity infrastructure is high. The only future- proof option to supply this infrastructure is to deploy "fiber to the home" (FTTH) networks. One of the main difficulties with the deployment of FTTH is the vast amount of single-mode fiber (SMF) connections that need to be made. Hence there is a strong need for components which enable high performance, robust and easy-to- use SMF connectors. Since large-scale deployment is the goal, these components should be mass-producible at low cost. We discuss a rapid prototyping process on the basis of hot embossing replication of a self-centering alignment system (SCAS) based on three micro-springs, which can position a SMF independently of its diameter. This is beneficial since there is a fabrication tolerance of up to ±1 μm on a standard G.652 SMF's diameter that can lead to losses if the outer diameter is used as a reference for alignment. The SCAS is first prototyped with deep proton writing (DPW) in polymethylmethacrylate (PMMA) after which it is glued to a copper substrate with an adhesive. Using an electroforming process, a nickel block is grown over the PMMA prototype followed by mechanical finishing to fabricate a structured nickel mould insert. Even though the mould insert shows non- ideal and rounded features it is used to create PMMA replicas of the SCAS by means of hot embossing. The SCAS possesses a central opening in which a bare SMF can be clamped, which is designed with a diameter of 121 μm. PMMA replicas are dimensionally characterized using a multisensor coordinate measurement machine and show a central opening diameter of 128.3 ± 2.8 μm. This should be compared to the central opening diameter of the DPW prototype used for mould formation which was measured to be 120.5 μm. This shows that the electroforming and subsequent replication process is possible for complex micro-scale components and could be accurate after optimisation. We characterized the sidewall roughness of PMMA replicas using a non- contact optical profiler, resulting in a root-mean-square roughness of 48 nm over an area of 63.7 μm×47.8 μm. This low sidewall roughness is especially important in the replication of high aspect ratio structures to facilitate demoulding since the sidewalls cause the most friction with the mould insert.

Proceedings Article | 9 May 2012 Paper

Microoptical device for efficient read-out of active WGM resonators

Tobias Wienhold, Marko Brammer, Tobias Grossmann, Marc Schneider, Heinz Kalt, Timo Mappes

Proceedings Volume 8428, 842812 (2012) https://doi.org/10.1117/12.921990

KEYWORDS: Resonators, Sensors, Polymers, Optical fibers, Silicon, Laser resonators, Silica, Glasses, Signal to noise ratio, Optical microcavities

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Proceedings Article | 12 May 2010 Paper

Replication of optical components by hot embossing

M. Worgull, M. Schneider, M. Heilig, A. Kolew, H. Dinglreiter, J. Mohr

Proceedings Volume 7716, 771604 (2010) https://doi.org/10.1117/12.859077

KEYWORDS: Polymers, Waveguides, Optical components, Metals, Polymer thin films, Temperature metrology, Lithography, Lenses, Nickel, Polymethylmethacrylate

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Proceedings Article | 21 April 2006 Paper

Optical interconnects on printed circuit boards using embedded optical fibers

Marc Schneider, Thomas Kühner

Proceedings Volume 6185, 61850L (2006) https://doi.org/10.1117/12.662425

KEYWORDS: Optical fibers, Optical interconnects, Optoelectronics, Optical printed circuit boards, Receivers, Vertical cavity surface emitting lasers, Waveguides, Glasses, Optical components, Optical alignment

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Showing 5 of 11 publications

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