Browsing by Author "Yamoah, G.G."
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Item Framework for time relevant water monitoring system(Computing in Research and Development in Africa: Benefits, Trends, Challenges and Solutions, 2015) Katsriku, F.A.; Wilson, M.; Yamoah, G.G.; Abdulai, J.D.; Rahman, B.; Grattan, K.The emergence of telecommunications in the last decade and advances in the field of instrumentation have enabled many new applications to be developed in particular for remote monitoring of physical environment by sensors spatially distributed. A framework for water quality monitoring is been proposed based on a telecommunications infrastructure. In this proposal, we review some of the benefits that may be derived by developing nations and key challenges that need to be addressed in the monitoring of water quality for rural communities in Africa. It is proposed that Fibre Optic Sensors can be used to design compact and highly efficient sensor systems. The proposed framework may be extended to other areas of national economic importance. © Springer International Publishing Switzerland 2015.Item Numerical Analysis of Graphene Cladded Optical Fibre(Science and Development (A Journal of the College of Basic and Applied Sciences (CBAS), University of Ghana), 2017-12) Katsriku, K.A.; Yamoah, G.G.; Abdulai, J-D.Graphene has been hailed as a material with extraordinary properties capable of transforming many scientific and industrial fields. In this work, the vector H-field finite element method is used in the characterization of a graphene cladded fibre. Results are presented on the modal analysis of various types of graphene cladded optical fibres. Such fibres may find use as nonlinear elements in linear pulse compression schemes for ultra fast pulse generation.Item Performance Evaluation of Chromatic Dispersion Compensation Techniques in Single Mode Fibre for Radio over Fibre Applications(Science and Development (A Journal of the College of Basic and Applied Sciences (CBAS), University of Ghana), 2017-12) Dankwa, I.; Katsriku, F.A.; Amewuda, A.B.; Yamoah, G.G.; Abdulai, J-D.With the increasing growth and high demand for data, fiber optic transmission, especially radio over fibre (RoF), has become a viable option for data and wireless communication. In such systems however, dispersion is a huge limiting factor in achieving the high data transmission rates. This work reviews current dispersion systems and proposes a system of dispersion compensation with fibre grating. Simulations are conducted using Optisystem 7.0 at varied data rates of 10, 20 and 40Gbps over a 200km transmission distance. The output is analyzed on parameters such as bit error rate (BER), Q-factor and eye height. It is shown that data rate exceeding 10 GB/s is achievable over a 200km distance.