Microstructures in Polymer Fibres for Optical Fibres, THz Waveguides, and Fibre-Based Metamaterials

Figure 11

Wire array metamaterial composed of indium wires in a PMMA fibre, resulting in a tailored permittivity, described by a plasma frequency at approximately 0.2–0.3 THz for radiation with the electric field parallel to the wires. The reduction in transmission at higher frequencies arises from dielectric resonances. The three coloured curves represent fibres of slightly different sizes, with green being the largest and blue the smallest. Adapted from [75].