Mr. Johannes Karl Fischer Profile

Johannes Karl Fischer

at Fraunhofer-HHI

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Publications (3)

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 | 21 September 2006 Paper

The nonlinear diffusion bandwidth: a simple tool for optimizing dispersion maps

Christian-Alexander Bunge, Johannes Fischer, Hadrien Louchet, Kambiz Jamshidi, Klaus Petermann

Proceedings Volume 6353, 63531S (2006) https://doi.org/10.1117/12.690427

KEYWORDS: Complex systems, Signal attenuation, Phase shift keying, Single mode fibers, Diffusion, Numerical simulations, Nonlinear optics, Systems modeling, Modulation, Receivers

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Proceedings Article | 9 December 2005 Paper

A simple criterion for the characterization of nonlinear impairments in optical transmission systems

Johannes Fischer, Hadrien Louchet, Sebastian Randel, Klaus Petermann

Proceedings Volume 6021, 60211A (2005) https://doi.org/10.1117/12.636888

KEYWORDS: Nonlinear optics, Complex systems, Diffusion, Dispersion, Amplitude shift keying, Transmittance, Modulation, Wavelength division multiplexing, Single mode fibers, Receivers

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