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Zhe Li

Biography

Zhe Li received his B.Eng degree in optical information science and technology from Jilin University, China. The following September, he joined UCL to pursue an MSc in Wireless and Optical Communications. For his thesis, he worked with Dr Benn Thomsen on exploiting the bandwidth potential of multimode optical fibres by using COMIMO technique.

In December 2013, Zhe joined the Optical Networks Group at UCL as a PhD candidate. Under the supervision of Dr Robert Killey, he is currently investigating spectrally-efficient and low-cost optical communication systems with direct detection for short- and medium- haul links/networks.

Contact

Research Interests

  • Nyquist Subcarrier Modulation
  • Optical OFDM and DMT
  • Pulse-Amplitude Modulation (PAM)
  • Direct-detection transceivers
  • Digital signal processing (DSP) for linear/nonlinear penalty compensation

Project Title

High Capacity and Spectrally-efficient Optical Communication System with Low-cost Single Photodiode-based Direct-Detection Transceiver for Metropolitan Transmission Links

Supervisor

Dr Robert Killey and Prof Polina Bayvel

Funding

Zhe is funded by Semtech Corporation

Honours and Awards

2017 Finalist (competition result to be confirmed in Sep. 2017) of the Best Student Paper Award in European Conference and Exhibition on Optical Communication (ECOC).

2017 IEEE Photonics Society Graduate Student Fellowship.

2017 IET Postgraduate Prize.

2017 Grand Prize Winner of the Optical Society (OSA) Corning Paper Competition in Optical Fiber Communication Conference (OFC).

2016 Runner Up of the Best Student Paper Award in European Conference and Exhibition on Optical Communication (ECOC).

2016 SPIE Optics and Photonics Education Scholarship.

Publications

1. Z. Li, M.S. Erkılınç, K. Shi, E. Sillekens, L. Galdino, B.C. Thomsen, P. Bayvel, and R.I. Killey, "168 Gb/s/l direct-detection 64-QAM SSB Nyquist-SCM transmission over 80 km uncompensated SSMF at 4.54 b/s/Hz net ISD using a Kramers-Kronig receiver", in European Conference on Optical Communications (ECOC), to be published, 2017.

2. Z. Li, M.S. Erkılınç, K. Shi, E. Sillekens, L. Galdino, B.C. Thomsen, P. Bayvel, and R.I. Killey, "Joint optimisation of resampling rate and carrier-to-signal power ratio in direct-detection Kramers-Kronig receivers", in European Conference on Optical Communications (ECOC), to be published, 2017.

3. Z. Li, M.S. Erkılınç, K. Shi, E. Sillekens, T. Xu, L. Galdino, B.C. Thomsen, P. Bayvel, and R.I. Killey, "Digital linearization of direct-detection transceivers for spectrally-efficient 100 Gb/s/l WDM metro networking", IEEE/OSA Journal of Lightwave Technology, to be published, Jan. 2018.

4. Z. Li, M.S. Erkılınç, K. Shi, E. Sillekens, L. Galdino, B.C. Thomsen, P. Bayvel, and R.I. Killey, "SSBI mitigation and Kramers-Kronig scheme in single-sideband direct-detection transmission with receiver-based electronic dispersion compensation", IEEE/OSA Journal of Lightwave Technology, vol. 35, no. 10, pp.1887-1893, 2017.

5. Z. Li, M.S. Erkılınç, K. Shi, E. Sillekens, L. Galdino, B.C. Thomsen, P. Bayvel, and R.I. Killey, " Improvement of digital chromatic dispersion post-compensation by utilizing beating interference mitigation for direct-detection SSB Nyquist-SCM", in Optical Fiber Communication Conference (OFC), paper Th3D.2, 2017.

6. Z. Li, M.S. Erkılınç, K. Shi, E. Sillekens, L. Galdino, B.C. Thomsen, P. Bayvel, and R.I. Killey, " 112 Gb/s/l WDM direct-detection Nyquist-SCM transmission at 3.15 (b/s)/Hz over 240 km SSMF enabled by novel beating interference compensation", in Optical Fiber Communication Conference (OFC), paper Tu3I.4, 2017.

7. Z. Li, M. S. Erkilinc, L. Galdino, K. Shi, B. C. Thomsen, P. Bayvel, and R. I. Killey, " Comparison of digital signal-signal beat interference compensation techniques in direct-detection subcarrier modulation systems", Opt. Express, vol. 24, no. 25, pp. 29176-29189, 2016.

8. Z. Li, M. S. Erkilinc, R. Maher, L. Galdino, K. Shi, B. C. Thomsen, P. Bayvel, and R. I. Killey, "Two-stage linearization filter for direct-detection subcarrier modulation", IEEE Photonics Technology Letters, vol. 28, no. 24, pp. 2838-2841, 2016.

9. Z. Li, M. S. Erkilinc, R. Maher, L. Galdino, K. Shi, B. C. Thomsen, P. Bayvel, and R. I. Killey, "Reach enhancement for WDM direct-detection subcarrier modulation using low-complexity two-stage signal-signal beat interference cancellation", in European Conference on Optical Communications (ECOC), paper M.2.B.1, 2016.

10. Z. Li, M. S. Erkilinc, R. Bouziane, R. Maher, L. Galdino, K. Shi, B. C. Thomsen, P. Bayvel, and R. I. Killey, "Simplifed DSP-based signal-signal beat interference mitigation for direct detection subcarrier modulation", in Optical Fiber Communication Conference (OFC), paper W1A.3, 2016.

11. Z. Li, M. S. Erkilinc, R. Bouziane, B. C. Thomsen, P. Bayvel, and R. I. Killey, "Simplifed DSP-based signal-signal beat interference mitigation technique for direct detection OFDM", IEEE/OSA J. Lightw. Technol., vol. 34, no. 3, pp. 866-872, 2016.

12. Z. Li, M. S. Erkilinc, S. Pachnicke, H. Griesser, R. Bouziane, B. C. Thomsen, P. Bayvel, and R. I. Killey, "Signal-signal beat interference cancellation in spectrally-efficient WDM direct-detection Nyquist-pulse-shaped 16-QAM subcarrier modulation", Opt. Express, vol. 23, no. 18, pp. 23694-23709, 2015.

13. R. I. Killey, M. S. Erkilinç, Z. Li, S. Pachnicke, H. Griesser, R. Bouziane, B. C. Thomsen, and P. Bayvel, "Spectrally-efficient direct-detection WDM transmission systems", in International Conference on Transparent Optical Networks (ICTON), paper We.B3.2 (Invited), 2015.

14. M. S. Erkilinc, Z. Li, S. Pachnicke, H. Griesser, B. C. Thomsen, P. Bayvel, and R. I. Killey, "Spectrally-Efficient WDM Nyquist Pulse-Shaped 16-QAM Subcarrier Modulation Transmission with Direct Detection", IEEE/OSA J. Lightw. Technol., vol. 33, no. 15, pp. 3147-3155, 2015.

15. Z. Li, M.S. Erkilinc, S. Pachnicke, H. Griesser, R. Bouziane, B.C. Thomsen, P. Bayvel, and R.I. Killey, "Performance Limits of Spectrally-Efficient WDM Direct-Detection SSB Nyquist Subcarrier Modulation with Signal-Signal Beat Interference Cancellation", in European Conference on Network and Optical Communications (NOC), pp. 1-6, 2015.

16. Z. Li, M.S. Erkilinc, S. Pachnicke, H. Griesser, B.C. Thomsen, P. Bayvel, and R.I. Killey, "Direct-Detection 16-QAM Nyquist-Pulse-Shaped Subcarrier Modulation with SSBI Mitigation", in International Conference on Communications (ICC), pp. 5204-5209, 2015.