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Robert Maher


Robert Maher received his BEng (first class honours) and PhD degrees in electronic engineering from Dublin City University, Ireland, in 2005 and 2009 respectively. His PhD research focused on the development and characterisation of cost efficient wavelength tuneable transmitters suitable for reconfigurable agile optical networks. In 2009 he took up a position as a Postdoctoral Researcher within the Research Institute for Networks and Communications Engineering (RINCE), based in Dublin City University, where he carried out research on optical comb generation and coherent optical networks.

In 2010 he was awarded an IRCSET INSPIRE Marie Curie Fellowship and joined the optical networks group at UCL. His current research focuses on the characterization of fast switching semiconductor tuneable lasers and dynamically reconfigurable coherent optical networks.

Dr Maher has authored/co-authored over 30 papers in journals and conferences in the area of optical communications and is a member of the Institution of Engineers of Ireland (IEI) and the Institute of Electrical and Electronic Engineering (IEEE).


Current Research Interests

  • Fast switching tuneable lasers for use in agile optical networks
  • Physical layer implementation of dynamically reconfigurable coherent optical networks that utilise advanced modulation formats

Selected Publications

  1. R. Maher and B.C. Thomsen, “Dynamic linewidth measurement technique using digital intradyne coherent receivers”, ECOC 2011
  2. R. Maher, L.P. Barry, B. Kelly, R. Phelan, J. O’Gorman and P.M. Anandarajah, “Implementation of a cost-effective optical comb source in a WDM-PON with 10.7Gb/s data to each ONU and 50km reach”, OSA Journal Optics Express, vol. 18, no. 15, pp. 15672-15681, 2010.
  3. R. Maher, P. M. Anandarajah, S.K. Ibrahim, L.P. Barry, A.D. Ellis, P. Perry, R. Phelan, B. Kelly and J. O’Gorman, “Low cost comb source in a coherent wavelength division multiplexed system”, ECOC 2010.
  4. R. Maher, P.M. Anandarajah, L.P. Barry and J. M. Dudley, “High repetition rate pulse train generation at GHz repetition rates from nonlinear breather reshaping in standard single mode fibre”, Conference on nonlinear optics and its applications, SPIE photonics Europe international symposium 2010.
  5. R. Maher, L.P. Barry and P.M. Anandarajah, “Cost efficient directly modulated DPSK downstream transmitter and colourless upstream remodulation for full-duplex WDM-PONs”, OFC 2010.
  6. R. Maher, K. Shi, P.M. Anandarajah, A. Kaszubowska, L.P Barry and Y. Yu, “Novel frequency chirp compensation scheme for directly modulated SG DBR tunable lasers”, IEEE Photon. Technol. Lett., vol. 21, no. 5,  pp. 340-342, Mar. 2009.
  7. R. Maher, P.M. Anandarajah, A.D. Ellis, D. Reid and L.P Barry, “Optimised wavelength tunable RZ Transmission at 42.7 Gb/s using a linear spectrographic technique”, OSA Journal Optics Express, vol. 16, no. 15, pp. 11281-11288, 2008.
  8. R. Maher, P.M. Anandarajah and L.P Barry, “Complete performance analysis of a 3.5ps pulse source consisting of a gain-switched laser diode followed by a non-linearly chirped grating”, CLEO 2008.


Dr. Maher is supported by the Irish Research Council for Science, Engineering and Technology, co-funded by Marie Curie Actions under FP7.

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