A new type of flexible THz-wave hollow waveguide was developed using ferroelectric polymer PVDF as the cladding material of the waveguide. The transmission efficiency of the PVDF waveguide was better than a metal coated hollow waveguide with the same size and structure as the PVDF waveguide. We also report the tilt-angle dependencies of the transmission efficiency of the hollow PVDF and metal waveguides. The polarization dependency of the PVDF waveguide was better than that of a metal waveguide.© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.