Dipl.-Ing. Felix Frey

Research

PhD Thesis

Codierte Modulation, optimierte Decoder und Entzerrung für den faseroptischen Kanal

Research Interests

  • Optical communication systems

Publications

2017

  • F. Frey, L. Molle, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
    Single-step Perturbation-based Nonlinearity Compensation of Intra- and Inter-Subcarrier Nonlinear Interference
    Accepted at 43th European Conf. on Opt. Commun. (ECOC), Sept. 2017
  • M. Baier, F.M. Soares, Z. Zheng, C. Schmidt-Langhorst, R. Elschner, F. Frey, M. Gruner, J. K. Fischer, C. Schubert, M. Moehrle, N. Grote and M. Schell
    112-Gb/s PDM-PAM4 Generation and 80-km Transmission Using a Novel Monolithically Integrated Dual-Polarization Electro-Absorption Modulator InP PIC
    Accepted at 43th European Conf. on Opt. Commun. (ECOC), Sept. 2017
  • P. Wilke-Berenguer, F. Frey, C. Schubert, J. K. Fischer
    Nonlinear Pre-Distortion of Transmitter Components [Invited]
    IEEE Photonics Conf. (IPC), October 2017
  • F. Frey, F. Wäckerle, J. K. Fischer, R. Fischer
    Optimized Detection and Decoding of 4D Signals for the Nonlinear Fiber-optical Channel [Invited]
    Sig. Proc. Photonic Commun. (SPPCom), July 2017
  • F. Frey, R. Elschner, J. K. Fischer
    Estimation of Trends for Coherent DSP ASIC Power Dissipation for Different Bitrates and Transmission Reaches
    18. ITG-Fachtagung Photonische Netze, May 2017
  • F. Frey, J. K. Fischer, R. Fischer
    On the Frequency Dependence of the FWM Efficiency and its Application to Analytical Channel Models
    ITG-Workshop 5.3.1, February 2017
  • F. Frey, R. Elschner, C. Schmidt-Langhorst, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
    Investigation of Nonlinear Inter-channel Interference in Heterogeneous Flexible Optical Networks
    International ITG Conference on Systems, Communications and Coding (SCC), Hamburg, February 2017

2016

  • A. Aimone, F. Frey, R. Elschner, I. Garcia Lopez, G. Fiol, P. Rito, M. Gruner, A. C. Ulusoy, D. Kissinger, J. K. Fischer, C. Schubert, M. Schell
    DAC-less 32-GBd PDM-256-QAM using Low-Power InP IQ Segmented MZM
    IEEE Photonics Technol. Lett.
    , vol. 29, no. 2, pp. 221-223, 2017
  • F. Frey, R. Elschner, C. Schmidt-Langhorst, R. Emmerich, C. Schubert, J. K. Fischer, R. Fischer
    Analysis of Temporal Correlations of Inter-Channel Interference in Heterogeneous Flexible Optical Networks
    Munich Workshop on Information Theory of Optical Fiber (MIO), Munich, December 2016

2015

  • C. Schmidt-Langhorst, R. Elschner, F. Frey, R. Emmerich, and C. Schubert
    Experimental Analysis of Nonlinear Interference Noise in Heterogeneous Flex-Grid WDM Transmission
    41th European Conf. on Opt. Commun. (ECOC), 2015, paper Tu.1.4.3
  • K. Habel, L. Fernandez, S. Weide, J. Hilt, V. Jungnickel, R. Elschner, C. Schubert, F. Frey, J. K. Fischer, and R. Freund
    5 Gbit/s Real-Time Processing Using π/4 -shift DQPSK for Bidirectional Radio-Over-Fibre System
    17th International Conference on Transparent Optical Networks (ICTON), 2015, paper Tu.D2.3.
  • R. Elschner, F. Frey, C. Schmidt-langhorst, J. K. Fischer, and C. Schubert
    FPGA Implementation of a Data-Aided Single-Carrier Frequency-Domain Equalizer for Format-Flexible Receivers
    16. ITG-Fachtagung Photonische Netze, 2015
  • S. Alreesh, C. Schmidt-langhorst, F. Frey, P. W. Berenguer, C. Schubert, and J. K. Fischer
    Transmission Performance of 4D 128SP-QAM With Forward Error Correction Coding
    IEEE Photonics Technol. Lett., vol. 27, no. 7, pp. 744–747, 2015
  • J. K. Fischer, C. Schmidt-Langhorst, S. Alreesh, R. Elschner, F. Frey, P. W. Berenguer, L. Molle, M. Nolle, and C. Schubert
    Generation, transmission, and detection of 4-d set-partitioning QAM signals
    J. Lightwave Technol., vol. 33, no. 7, pp. 1445–1451, 2015
  • M. Nölle, F. Frey, R. Elschner, C. Schmidt-Langhorst, J. K. Fischer, and C. Schubert
    Investigation of CAZAC Sequences for Data-Aided Channel Estimation Considering Nonlinear Optical Transmission
    Opt. Fiber Commun. Conf. (OFC), 2015, paper Th3G.2
  • T. A. Eriksson, S. Alreesh, C. Schmidt-langhorst, F. Frey, P. W. Berenguer, C. Schubert, J. K. Fischer, P. A. Andrekson, M. Karlsson, and E. Agrell
    Experimental Investigation of a Four-Dimensional 256-ary Lattice-based Modulation Format
    Opt. Fiber Commun. Conf. (OFC)
    , 2015, paper W4K.3.

2014

  • J. K. Fischer, R. Elschner, F. Frey, J. Hilt, C. Kottke, and C. Schubert
    Digital signal processing for coherent UDWDM passive optical networks
    15. ITG-Fachtagung Photonische Netze, 2014, pp. 1–7
  • J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, M. Nölle, C. Schmidt-Langhorst, and C. Schubert
    Bandwidth-variable transceivers based on four-dimensional modulation formats
    J. Lightwave Technol., vol. 32, no. 16, pp. 2886–2895, 2014.
  • R. Elschner, F. Frey, C. Schmidt-Langhorst, J. K. Fischer, and C. Schubert
    Data-Aided DSP for Flexible Transceivers

    Sig. Proc. Photonic Commun. (SPPCom)
    , 2014, paper SW1C.1.
  • C. Kottke, J. K. Fischer, R. Elschner, F. Frey, J. Hilt, C. Schubert, D. Schmidt, Z. Wu, and B. Lankl
    Coherent UDWDM PON with joint subcarrier reception at OLT.
    Opt. Express, vol. 22, no. 14, pp. 16876–88, Jul. 2014
  • F. Frey, R. Elschner, C. Kottke, C. Schubert, and J. K. Fischer
    Efficient Real-time Implementation of a Channelizer Filter with a Weighted Overlap-Add Approach
    40th European Conf. on Opt. Commun. (ECOC), 2014, paper Tu.3.1.3.
  • F. Frey, R. Elschner, C. Schubert, and J. K. Fischer
    Efficient Digital Down-Conversion of Multicarrier Signals with a Weigthed Overlap-Add Filterbank
    ITG-Workshop 5.3.1, February 2014
  • M. Nölle, F. Frey, R. Elschner, C. Schmidt-Langhorst, A. Napoli, and C. Schubert
    Performance Comparison of Different 8QAM Constellations for the Use in Flexible Optical Networks
    Opt. Fiber Commun. Conf. (OFC), 2014, paper W3B.2.
  • T. Richter, M. Nölle, F. Frey, and C. Schubert
    Generation and Coherent Reception of 107-GBd Optical Nyquist BPSK, QPSK, and 16QAM
    IEEE Photonics Technol. Lett., vol. 26, no. 9, pp. 877–880, 2014.

2013

  • C. Schmidt-Langhorst, F. Frey, M. Nölle, R. Elschner, C. Meuer, P. Wilke Berenguer, and C. Schubert
    Optimization of subcarrier spacing of 400-Gb/s dual-carrier Nyquist PDM-16QAM in a Flexgrid scenario
    39th European Conf. on Opt. Commun. (ECOC), 2013, p. P.5.1.
  • R. Elschner, F. Frey, C. Schmidt-Langhorst, J. K. Fischer, M. Nölle, and C. Schubert,
    Software-defined Transponders for Future Flexible Grid Networks
    Photonic Networks and Devices (NETWORKS), 2013, paper NT2C.4.
  • J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, M. Nölle, and C. Schubert
    Bandwidth-Variable Transceivers Based on 4D Modulation Formats for Future Flexible Networks
    39th European Conf. on Opt. Commun. (ECOC), 2013, paper Tu.3.C.1.
  • T. Tanimura, S. Alreesh, J. K. Fischer, C. Schmidt-Langhorst, F. Frey, C. Meuer, R. Elschner, L. Molle, and C. Schubert
    Nonlinear Transmission of 6PolSK-QPSK Signals using Coded Modulation and Digital Back Propagation
    Opt. Fiber Commun. Conf. (OFC), 2013, paper OTu3B.3.

2012

  • J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, C. Meuer, L. Molle, C. Schmidt-Langhorst, T. Tanimura, and C. Schubert
    Experimental Investigation of 126-Gb/s 6PolSK-QPSK signals
    Opt. Express, vol. 20, no. 26, pp. B232–7, Dec. 2012.
  • R. Elschner, F. Frey, C. Meuer, J. K. Fischer, S. Alreesh, C. Schmidt-Langhorst, L. Molle, T. Tanimura, and C. Schubert
    Experimental Demonstration of a Format-Flexible Single Carrier Coherent Receiver using Data-Aided Digital Signal Processing
    38th European Conf. on Opt. Commun. (ECOC), 2012, vol. 20, no. 27, paper We.1.A.4.
  • R. Elschner, F. Frey, C. Meuer, J. K. Fischer, S. Alreesh, L. Molle, T. Tanimura, and C. Schubert
    Experimental demonstration of a format-flexible single-carrier coherent receiver using data-aided digital signal processing
    Opt. Express, vol. 20, no. 27, pp. 28786–28791, 2012.
  • J. K. Fischer, S. Alreesh, R. Elschner, F. Frey, C. Meuer, L. Molle, T. Tanimura, and C. Schubert
    Experimental Investigation of 126-Gb/s 6PolSK-QPSK Signals
    38th European Conf. on Opt. Commun. (ECOC), 2012, vol. 2, no. 1, paper We.1.C.4.

Research Assistant