The Potential of Flat Curvilinear Doe as a Key Element of Future Integrated Diffractive Optics and Information Protected Element

The results of a detailed simulation obtained using a parallel FDTD method and the application of the proposed device to focusing and frequency-selective properties of flat conical diffactive elements in THz waveband are described. Introduction of novels diffractive element in the THz waveband is described. If offers the potential to realize novel types of devices for communications, sensing, integrated optics, networks, transmission lines, information protecting systems and so on. To this end, diffractive planar elements fabricated on non-flat surfaces make it possible to enrich, the "pool of devices" for applications including integrated optics at different waveband, including THz, and to design elements with novel properties and potentials.