Chair of Communications

M.Sc. Simon Ohlendorf

M.Sc. Simon Ohlendorf Room: C-014
Phone: +49 (0)431 880 6311
Fax: +49 (0)431 880 6303


Research Activity:

  • Data Center Interconnectivity
  • Flexible Direct Detection Systems (IM/DD)
  • Orthogonal Frequency Division Multiplexing (CO-OFDM, DMT)
  • Wavelength Division Multiplexing (WDM)






S. Ohlendorf, S. Pachnicke, W. Rosenkranz, "Minimizing the Oversampling Rate in Bandwidth-Variable Optical Kramers-Kronig IM/DD-Transmission with Multidimensional PAM", International Conference on Systems, Communications and Coding (SCC), Rostock, Germany, February 2019.


S. Ohlendorf, S. Pachnicke, W. Rosenkranz, "Bandwidth-Variable DWDM Transmission for Data Center Interconnects Using Multidimensional PAM", Asia Communications and Photonics Conference (ACP), Hangzhou, China, October 2018.
S. Ohlendorf, R. Joy, S. Pachnicke, W. Rosenkranz, „Flexible PAM in DWDM Transmission with Kramers-Kronig DSP“, European Conference on Optical Communication (ECOC), Rome, Italy, September 2018.
S. Ohlendorf, R. Joy, S. Pachnicke, W. Rosenkranz, "Optimizing Reach and Capacity of IM/DD Systems by Using Multidimensional PAM and DSP", Advanced Photonics Congress (SPPCom), Zurich, Switzerland, July 2018.
S. Ohlendorf, S. Pachnicke, W. Rosenkranz, "Multidimensional PAM With Pseudo-Gray Coding for Flexible Data Center Interconnects", IEEE / Photonics Technology Letters (PTL), vol. 30, issue 12, pp. 1143-11460, June 2018.
Dennis Clausen, Roi Rath, Simon Ohlendorf, Werner Rosenkranz, Stephan Pachnicke, „Experimental Demonstration of Flexible Hybrid Modulation Formats for Future Adaptive Optical Transmission Systems", IEEE J. Lightw. Technol., June 2018
S. Ohlendorf, R. Joy, W. Rosenkranz, „Flexible Optische Übertragungssysteme mit Direktdetektion für Verbindungen zwischen Datenzentren“, ITG-Workshop "Modelling of Photonic Components & Systems", Hamburg, Germany, February 2018


R. Rath, D. Clausen, S. Ohlendorf, S. Pachnicke, W. Rosenkranz, "Tomlinson-Harashima Precoding for Dispersion Uncompensated PAM-4 Transmission with Direct-Detection", IEEE J. Lightw. Technol. (JLT), September 2017.
S. Ohlendorf, W. Rosenkranz, „Flexible optical modulation technologies for data centre applications (Invited)”, International Conference on Transparent Optical Networks (ICTON 2017), Girona, Spain, July 2017.
S. Ohlendorf, D. Clausen, R. Rath, S. Pachnicke, W. Rosenkranz,„Comparison of Time Domain Hybrid PAM and DMT for Data Center Applications”, ITG Conference “Photonic Networks”, Leipzig, May 2017


Ohlendorf, S; Clausen, D; Rosenkranz, W.:
"On the Influence of IQ-Imbalance on Carrier Recovery in WDM CO-OFDM Systems", Workshop der ITG Fachgruppe 5.3.1, 18.-19. Februar 2016, Heinrich-Hertz-Institut Berlin, Deutschland