This work has been made possible with the financial support of Tshwane University of Technology (TUT), the Laboratory for Innovative Systems in Electronics of the Faculty of Engineering and the Built Environment Electrical Department at TUT and the National Research Foundation of South Africa. All the simulation work and concepts as presented in this article were generated by means of South African National Research Foundation grants FA200604110043 (2007-2009), NRF KISC grant 69798 (2009-2011) and SANRF travel block grants (2007, 2008, 2009). The utilization of device design and characterization facilities at the Carl and Emily Fuchs Institute for Microelectronics at the University of Pretoria, South Africa, in realizing some of the experimental devices and results is gratefully acknowledged. Mr. Gustave Udahemukha is thanked for his technical contribution to the MATLAB code used in the first iteration simulations. The technical content as contained in this article currently forms the subject of the current PCT patent applications PCT/IB2010/050356; PCT/ZA2010/00032, PCT/ZA2010/00031, PCT/ZA2010/00033, and PCT/ZA2011/000090 of 2010 and 2011. It is now also the subject of the following USA Patent Applications: 20120153864, 20120154812, 20120170942, 20120175642. Several provisional applications on Si LEDs, MOEMS, waveguide design, matrix and array interfaces, modulators and electro-optical couplers serve as background priority patents to these patents. The authors wish to thank the anonymous reviewers for their constructive contributions towards finalising the article.