Dr. Reinhold Ludwig Profile

Dr. Reinhold Ludwig

at Fraunhofer-Institut für Nachrichtentechnik

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Publications (6)

Proceedings Article | 25 January 2011 Open Access

Higher-order modulation formats for spectral-efficient high-speed metro systems

R. Freund, M. Nölle, M. Seimetz, J. Hilt, J. Fischer, R. Ludwig, C. Schubert, H.-G. Bach, K.-O. Velthaus, M. Schell

Proceedings Volume 7959, 795902 (2011) https://doi.org/10.1117/12.881243

KEYWORDS: Receivers, Modulation, Phase shift keying, Transmitters, Modulators, Polarization, Tolerancing, Quadrature amplitude modulation, Digital signal processing, Field programmable gate arrays

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Proceedings Article | 19 November 2007 Paper

All-optical wavelength converter concepts for high data rate D(Q)PSK transmission

B. Hüttl, R. Elschner, H. Suche, A. Gual i Coca, Ch.-A. Bunge, C. Schmidt-Langhorst, R. Ludwig, R. Nouroozi, H. Weber, K. Petermann, W. Sohler, C. Schubert

Proceedings Volume 6783, 678323 (2007) https://doi.org/10.1117/12.745023

KEYWORDS: Phase shift keying, Data conversion, Modulation, Distortion, Signal processing, Phase modulation, Receivers, Signal attenuation, Fiber Bragg gratings

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Proceedings Article | 3 October 2006 Paper

Ultrafast transmission technology

R. Ludwig, S. Ferber, C. Schubert, C. Schmidt-Langhorst, B. Huettl, H. Weber

Proceedings Volume 6353, 635325 (2006) https://doi.org/10.1117/12.691332

KEYWORDS: Receivers, Picosecond phenomena, Polarization, Single mode fibers, Clocks, Transmitters, Modulation, Time division multiplexing, Forward error correction, Modulators

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Proceedings Article | 25 October 2004 Paper

Ultrafast technologies in 160 Gbit/s transmission systems

Carsten Schmidt-Langhorst, Colja Schubert, Christof Boerner, Sebastian Ferber, Reinhold Ludwig, Joern Berger, Enno Hilliger, Vincent Marembert, Marcel Kroh, Hans-Juergen Ehrke, Hans-Georg Weber

Proceedings Volume 5595, (2004) https://doi.org/10.1117/12.571871

KEYWORDS: Eye, Ultrafast phenomena, Picosecond phenomena, Time division multiplexing, Polarization, Receivers, Semiconductor lasers, Transmitters, Demultiplexers, Multiplexers

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Proceedings Article | 28 June 1993 Paper

Photonic packet-switching experiments in a 2 x 2 switching node incorporating a fiber-loop buffer

M. Eiselt, A. Ehrhardt, Gerd Grosskopf, Reinhold Ludwig, Wilhelm Pieper, Ronald Schnabel, Hans-Georg Weber

Proceedings Volume 1807, (1993) https://doi.org/10.1117/12.147913

KEYWORDS: Switching, Asynchronous transfer mode, Semiconductor lasers, Optical amplifiers, Fiber amplifiers, Semiconductor optical amplifiers, Optical isolators, Reflectivity, Polarization, Switches

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Proceedings Article | 1 February 1991 Paper

Semiconductor laser amplifiers as all-optical frequency converters

Nikolaus Schunk, Gerd Grosskopf, Reinhold Ludwig, Ronald Schnabel, Hans-Georg Weber

Proceedings Volume 1362, (1991) https://doi.org/10.1117/12.24556

KEYWORDS: Frequency conversion, Data conversion, Optical amplifiers, Semiconductor lasers, Optoelectronic devices, Frequency converters, Optical filters, Modulation, Physics, Terahertz radiation

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Showing 5 of 6 publications

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