Illusion optics by single and twin cylindrical cavity cloaks

Abstract

Creating optical illusion by using interior cavity cloak in 2D is discussed in this paper. An antiobject is embedded in the cloak shell and the corresponding imaginary object (under transformation optics) is observed in virtual space instead of any other object which was really exist inside the cavity cloak in physical space. Cylindrical single (twin) cavity cloak is used in this paper, that making one (two) object with arbitrary shape and material properties appears exactly like another object(s) with different shape and material make up for an observer who lies outside the cloaking shell. The simulation results prove that this illusion device with the proposed parameters is operationally possible. The advantage of using internal cloak instead of folded geometry which is usually used is that there is no negative refraction in the structure of the device.