The study on pressure effect on characterization of directional coupler for different thickness of fiber cores in POF splitter development

An experimental study of coupling characterization is performed where different thickness of fiber cores are paired in order to develop a directional splitter. An external pressure is exerted upon both the fibers to stimulate the transfer of energy between the first fiber to the second fiber. The aim is to analyze the optimum thickness of multimode polymer optical fiber core needed to develop an effective coupler/splitter. The study is done by experimental set-up using specified radius of circular blocks customized using matching refractive index material. Other aim is to provide a considerable explanation on the characteristics in splitting ratio, excess loss and insertion loss when different thickness of cores are used with the existence of load F.