Picture of Roman Dischler

Roman Dischler

Stuttgart, Germany
Research Engineer


1986-1993 University of Stuttgart, Studies of Electrical Engineering (Telecommunication). Reception of Diploma (M.Sc.)

1983-1986 Albert-Ludwigs-University, Freiburg, Studies of Mathematics and Physics for teaching profession.

Research Interests

  • Modulation & Multiplexing
  • Optical Communication

Professional Activities

2016 - present  Nokia Bell Labs
Studies on flexible optical networks, regenerated optical systems

2006 - 2015  Alcatel-Lucent, Bell-Labs
Studies on advanced modulation formats especially for optical coherent system.

  • Optical OFDM
  • high order modulation format
  •  flexible transponders, transport SDN.

Achievements: 1.1 Tbps superchannel with polarisation multiplexed 256QAM modulation, Application of optical OFDM superchannels in a field trial on fibers of Deutsche Telekom (see publications)

Staff member of the CELTIC-PLUS projects 100-GET, SASER Savenet and SENDATE

2000 - 2006  Alcatel, Reasearch and Innovation
Studies for 40Gbps optical transmission system

  • Transmitter and receiver circuits
  • Characterisation and specification of optical and electronic components
  • Experimental studies of transmission performance of various binary modulation formats (NRZ, RZ, DPSK)
  • Various world record experiments in collaboration with R&I teams in France.

1993-2000  University Stuttgart, Institute of Telecommunications
Research Assitent. Research topics: Optical CDMA as multiple acees scheme in PON

Selected Articles and Publications

  1. "Transmission of a 1.1 Tb/s super channel in 100 GHz optical bandwidth based on PM-256 QAM and spatially coupled FEC," Optical Communication (ECOC 2013), 39th European Conference and Exhibition on , paper: We.1.C.1
  2. "Experimental Study of 16-, 32- and 64-QAM Constellation Sets in the 200-Gb/s Regime on a Data Rate Flexible System"; Optical Fiber Communication Conference (OFC) 2013 paper: OTh3B.2
  3. "Transmission of 3x253-Gb/s OFDM-Superchannels over 764km Field Deployed Single Mode Fibers"; National Fiber Optic Engineers Conference (NFOEC) 2010 paper: PDPD2
  4. "Demonstration of Bit Rate Variable ROADM Functionality on an Optical OFDM Superchannel"; Optical Fiber Communication Conference (OFC) 2010 paper: OTuM7
  5. "Transmission of 1.2 Tb/s Continuous Waveband PDM-OFDM-FDM Signal with Spectral Efficiency of 3.3 bit/s/Hz over 400 km of SSMF"; National Fiber Optic Engineers Conference (NFOEC) 2009 paper: PDPC2

Full list of publications see https://www.researchgate.net/profile/Roman_Dischler