Chong, W. SGan, S. X.Lai, ChoonChong, W. Y.Choi, Duk-YongMadden, SteveDe La Rue, RichardAhmed, H.2022-07-041041-1135http://hdl.handle.net/1885/268675A configurable optical waveguide polarizer using graphene oxide (GO) as a polarizing element has been demonstrated. The propagation characteristics of the GO-coated optical waveguide are changed from TM-pass to TE-pass by controlling the GO coating thickness in the sub-micron range during the deposition process. The highest extinction ratio measured for a TM-pass waveguide polarizer is 34.9 dB, using a coating length and thickness of 1.0 mm and 0.34 μm respectively, while the highest extinction ratio measured for a TE-pass polarizer is 46.0 dB, using a coating length and thickness of 1.0 mm and 0.71 μm respectively. The polarization extinction ratio has also been measured across the wavelength range from 1520 nm to 1620 nm - and a variation of less than 3.0 dB was obtained. Control of the coating thickness dependent characteristics of the GO-coated waveguides provides an avenue for tailoring of the polarization selection.This work was supported in part the Malaysia Ministry of Higher Education (MOHE) under Grant LRGS(2015)/NGOD/UM/KPT, in part by the Asian Office of Aerospace Research and Development (AOARD) under Grant 16IOA017, and in part by the University of Malaya Research Grant (UMRG) under Grant RP029C-15AFR. (Corresponding author: W. Y. Chong.)application/pdfen-AU© 2020 IEEEGraphene oxideplanarized optical waveguidesilica202010.1109/LPT.2020.29885912021-08-01