Directional cloak formed by photonic crystal waveguides

A method to cloak larger dimensional scattering objects against normal incident linearly polarized microwave is reported in this work. The cloaking device utilizes the principle of photonic crystal wave guiding mechanisms that mould and steer the wave path smoothly around the scattering objects. The proposed method is scalable at all length-scales from cm to nm band frequencies. This approach may be employed for the development of microwave photonic components that are aimed for independent and simultaneous electromagnetic wave operations. © 2012 IEEE.