His PhD dissertation research in nonlinear dynamical and spectral effects in semiconductor laser devices was completed within two and a half years, the minimum time allowed by the regulations of the university.His four years of research in Bangor (1996–2000) generated 73 papers published in refereed professional journals and national and international conferences.
He was actively engaged in a wide range of market-oriented research and development activities including, for example, optical amplifiers, optical transceivers, optical and electrical signal processing, high-speed optical signal transmission in long-haul, metropolitan and access networks. During his four years employment with Nortel Networks, he carried out a number of world-leading research projects, and produced 50 detailed technical reports released in the company.
He has developed and leads a highly productive research team undertaking cutting-edge research in optical transmission, dynamic networking and ultrafast optical switching for future optical networks.