Mr. Markus Wissmann Profile

Markus Wissmann

at Karlsruher Institut für Technologie

SPIE Involvement:

Author

Publications (6)

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

Read Abstract +

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

Read Abstract +

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 | 17 February 2010 Paper

Alternative technology for fabrication of nano- or microstructured mould inserts used for optical components

M. Wissmann, M. Guttmann, M. Hartmann

Proceedings Volume 7590, 75900D (2010) https://doi.org/10.1117/12.841894

KEYWORDS: Copper, Metals, Polymethylmethacrylate, Adhesives, Nanolithography, Manufacturing, Prototyping, Nanostructures, Lithography, Nickel

Read Abstract +

Proceedings Article | 15 May 2008 Paper

Replication of micro-optical components and nano-structures for mass production

M. Wissmann, M. Guttmann, J. Mohr, M. Hartmann, S. Wilson, C.-J. Moran-Iglesias, J. Van Erps, R. Krajewski, O. Parriaux, S. Tonchev

Proceedings Volume 6992, 699208 (2008) https://doi.org/10.1117/12.779511

KEYWORDS: Polymethylmethacrylate, Glasses, Metals, Spherical lenses, Nanolithography, Nickel, Copper, Scanning electron microscopy, Lithography, Electroplating

Read Abstract +

Proceedings Article | 14 May 2008 Paper

Replication of deep micro-optical components prototyped by Deep Proton Writing

J. Van Erps, M. Wissmann, M. Guttmann, M. Hartmann, L. Desmet, C. Debaes, J. Mohr, H. Thienpont

Proceedings Volume 6992, 699209 (2008) https://doi.org/10.1117/12.779293

KEYWORDS: Prototyping, Polymers, Liquids, Sensors, Metals, Electroplating, Polymethylmethacrylate, Waveguides, Micro cutting, Nickel

Read Abstract +

Proceedings Article | 14 May 2008 Paper

Characterization of the optical parameters of high aspect ratio polymer micro-optical components

Rafal Krajewski, Jurgen Van Erps, Markus Wissmann, Malgorzata Kujawinska, Olivier Parriaux, S. Tonchev, Jurgen Mohr, Hugo Thienpont

Proceedings Volume 6992, 69921B (2008) https://doi.org/10.1117/12.783472

KEYWORDS: Glasses, Prototyping, Polymers, Refractive index, Fabrication, Optical components, Micromachining, Inspection, Optical testing, Polishing

Read Abstract +

Showing 5 of 6 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years