Fabrication and Characterization of Polyester/Polymethylmethacrylate Buried Waveguide for Operation in Visible Light Range

This study presents the fabrication and characterization of polymethylmethacrylate (PMMA)-based buried waveguide for operation in the visible light range. The fabrication was done by engraving PMMA sheet using a computer numerical control (CNC) machine to be filled with a waveguide core material and then covered with PMMA sheet. The material used for waveguide core were Unsaturated Polyester Resin (UPR) with the brand of Yukalac C108B and Eternal 2441IP. Characterization was done to determine the output power loss by passing light from an LED with wavelength of 660 nm into the waveguide. The output spectrum was observed using a spectrometer. The results showed that power loss for waveguide with Yukalac C108B and Eternal are -7.89 dB and -13.85 dB, respectively.