Prof. Salah Obayya

Prof. Salah S A Obayya
Prof. Salah S A Obayya

Salah S A Obayya joined Zewail City of Science and Technology (ZC) in 2012 where he is now Chair Professor and Founding Director of Center for Photonics and Smart Materials (CPSM). Previously, he was the Vice Chairman of ZC (President), and Director-General of Research Institutes (Vice President, Research) at the same institution. Prior to Zewail City, he took up several academic posts at Brunel University UK (tenured Associate Professor, 2002), University of Leeds, UK (tenured Professor, 2006) and University of South Wales, UK (tenured Chair Professor, 2008) where he was the Founding Director of Photonics and Broadband Communications (PBC) Research Center and also he was the Director of Postgraduate Programs at the same institution.

He has gained an outstanding international reputation in the area of green nano-photonics with focus on the intelligent computational modeling of modern nano-photonic devices enabling technologies needed to realise low-carbon green society. He has published 195 journal publications, mostly in OSA, IEEE and IET/IEE, 2 patents (US patents office), authored 3 books (Computational Photonics, Wiley 2010 and Computational Liquid Crystal Photonics, Wiley 2016, Computational Photonic Sensors, Springer, 2018) adopted references for Graduate Programs in Photonics at international Universities, and 240 conference papers in international conference in photonics, many of these are invited talks, and keynote lectures, attracted external funding, from both industry and Research Councils, in the region of $ 4M, and supervised to successful completion 30 PhD students, over 70 MSc/MRes/MPhil students and 15 postdoctoral research fellows. He led the team that developed one of the world’s best comprehensive numerical packages for the analysis, design and optimisation of nanophotonic devices, and subsystems, where a number of “world-first” numerical approaches have been developed. His numerical package has been widely adopted by both academic and industrial Photonics communities to analyze, design and optimise the performance of a wide range of nano-photonic devices employed for applications in solar cells, optical telecoms, sensing, optical imaging and encryption and other applications.

Computational Photonics: Essentials, Recent Developments and Future Perspectives

Salah S A Obayya,

Center for Photonics and Smart Materials, Zewail City of Science and Technology, 6th Oct City, Giza, Egypt


Nowadays, “Photonics” technology penetrate a diverse range of thematic areas such as telecommunications, solar cells, laser manufacturing, biological and chemical sensing, display technology, optical computing, etc… On the other hand, the last two decades have witnessed dramatic progress and interest in the development of micro- and nano-fabrication techniques for complex photonic devices. Since the fabrication process is very costly in terms of both time and resources, the accurate modelling of such photonic devices becomes of more and more paramount importance. Coined as “Computational Photonics” is the art of analysis, design and optimisation of photonic devices via the extensive use of trustworthy modelling approaches. Offering fast, accurate and low-cost development venues, “Computational Photonics” will definitely help design new generations of photonic devices. Broadly, modeling of photonic components relies on the development and use of either analytical or numerical models. Albeit simple, analytical models have met the expectations needed to obtain accurate answers to the propagation problems associated with elementary waveguide geometries, such as slab waveguide, rectangular waveguide, step index fiber and so on. Challenging as they are, the newly-emerging materials such as plasmonics, metamaterials and Si nanowires pose unprecedented physical phenomena for which new research vectors in computational modelling are inevitable. Strictly-speaking, the high-index contrast of Si-nanowires induces sever discontinuity problems, whereas in plasmonic waveguides EM field variations around metal-dielectric interfaces are ultra-fast. With this, and others, in mind, conventional analytical and numerical models (such as FDTD) are far from ready to satisfy the designer demands of reliable design tools. Subsequently, the lecture will focus on the recent developments and the future perspectives of “Computational Photonics” through demonstration of the rigor, accuracy and efficiency of the computational modelling package created within the Center for Photonics and Smart Material (CPSM), Zewail City of Science and Technology