University College London, Department of Electronic and Electrical Engineering (Optical Network Group)


General description

The Optical Networks Group (ONG) group studies optical communications, operating on all time and length scales. We are interested in all linear and nonlinear phenomena related to the propagation of optical signals in different media, including different types of fibres and free-space. Our current research is focused on: Network architectures: wide-area, access & interconnects Network routing and control: adaptive, dynamic & intelligent High-speed transmission systems: use of advanced modulation formats, optimised detection and digital signal processing to increase system and network capacity in a variety of fibre types ONG is currently comprised of over a dozen academic and research staff and a similar numbers of PhD students. The ONG optical networks and systems laboratory at UCL is the leading optical transmission research lab in the UK. We are currently focused on characterising the performance of 100 Gb/s wavelength division multiplexed systems using advanced modulation formats in conjunction with coherent detection over transmission distances of up to 30,000 km. This laboratory is based around an optical fibre recirculating loop test-bed and a comprehensive signal generation and detection capability.

Website –

Research Area 1 – Capacity Crunch

Contact person – Prof Polina Bayvel,

Research Area 2 – Nonlinear Challenge

Contact person – Polina Bayvel,

Research Area 3 – Coherent Communication

Contact person – Polina Bayvel,

Publications of interest

  • Millar, D.S., Maher, R., Lavery, D., Koike-Akino, T., Pajovic, M., Alvarado, A., …Thomsen, B.C. (2016). Design of a 1 Tb/s Superchannel Coherent Receiver. JOURNAL OF LIGHTWAVE TECHNOLOGY, 34 (6), 1453-1463. doi:10.1109/JLT.2016.2519260
  • Erkilinc, M.S., Lavery, D., Shi, K., Thomsen, B.C., Bayvel, P., Killey, R.I., Savory, S.J. (2016). Polarization-Insensitive Single-Balanced Photodiode Coherent Receiver for Long-Reach WDM-PONs. JOURNAL OF LIGHTWAVE TECHNOLOGY, 34 (8), 2034-2041. doi:10.1109/JLT.2015.2507869
  • Li, Z., Erkilinc, M.S., Bouziane, R., Thomsen, B.C., Bayvel, P., Killey, R.I. (2016). Simplified DSP-Based Signal-Signal Beat Interference Mitigation Technique for Direct Detection OFDM. JOURNAL OF LIGHTWAVE TECHNOLOGY, 34 (3), 866-872. doi:10.1109/JLT.2015.2505187