Defect modes in a two-dimensional photonic bandgap wire structure

We present an experimental and numerical simulation analysis of the spectral properties of two-dimensional photonic band gap (PBG) wire structure with a spatial defect in the millimeter waveband. The localized defective modes are experimentally detected in the band gap transmission spectrum of 2D PBG wire structure. The quality factor and radiation pattern of the defect modes and their dependence on the number of wire rows are investigated. A good agreement between the experiment and theory is demonstrated. The research results can be used in the development of various telecommunication devices: high pass filters, directional couplers, attenuators, electromagnetic sensors, etc.