dc.contributor.authorKok, Chiang Liang.
dc.description.abstractIn this project, the feasibility of planar waveguide based directional coupler bio-sensors are thoroughly discussed and investigated. Firstly, the different waveguide propagation modes (TE and TM) are analysed. This allows us to find a suitable value for the propagation constant, 𝛽, and the coupling constant, 𝜅. Secondly, directional coupler based bio-sensors are investigated on a simple 2 x 2 design whereby there are two inputs and two outputs respectively. After which, coupled mode theory is used to derive many important coupled wave equations. This is crucial for a good understanding of the coupling between waveguides. Thirdly, coupled mode theory is extended to a larger number of adjacent coupled waveguides such as three, four and five waveguides so as to investigate the coupling between waveguides and its sensitivity for sensing applications. Lastly, the coupling (TE mode) between two, three, four and five coupled adjacent waveguides is confirmed using beam propagation simulations.en_US
dc.format.extent99 p.en_US
dc.rightsNanyang Technological University
dc.subjectDRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radioen_US
dc.titlePlanar waveguide - directional coupler biosensoren_US
dc.typeFinal Year Project (FYP)en_US
dc.contributor.supervisorGoh Wang Lingen_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.degreeBachelor of Engineeringen_US

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