Terahertz multi-metal-wire hybrid-cladding hollow waveguide for refractive index sensing
Yu Ying-Ying†, , Li Xu-You, He Kun-Peng, Sun Bo
       

Mode field intensity distributions of the proposed THz waveguide at the refractive indexes of measurand of (a) 1.00, (b) 1.22, and (c) 1.44.