Study of self-similar fractal structures composed of lossy single-negative materials with multiple defect layers
Based on the transfer matrix method, we theoretically analyze the transmission spectra of electromagnetic waves through one-dimensional self-similar fractal structures composed of lossy and dispersive single-negative materials. Multiple double-positive defects layers are introduced into the proposed structure, and some interesting properties are obtained. We find that the loss factor decreases the transmission peaks of defect modes, but the main properties of transmission spectra do not destroy. We believe that the introduction of loss is essential in order to obtain correct results on the performance of the structures.
fractal structures lossy single-negative materials photonic band gap