Optimization of reactive-ion etching (RIE) parameters for fabrication of tantalum pentoxide (Ta2O5) waveguide using Taguchi methodM. Firdaus A. Muttalib, Ruiqi Y. Chen, S. J. Pearce and Martin D. B. CharltonEPJ Web Conf., 162 (2017) 01003DOI: https://doi.org/10.1051/epjconf/201716201003