Regardless of the possibility of localisation of the energy of the plasmon mode in the subwave size range, a significant shortcoming of the plasmon structures are the high losses through absorption in the metal, directly proportional to the degree of localisation of the mode energy. An interesting aspect of the problem of calculating the diffractive gratings with the resonance properties for differentiation and integration of the optical power source is the development of a method for calculating and producing planar structures for the given transformations of the time optical signals designed for information processing in the chip. The photonic crystals are promising components for information technologies. The planar and compact nature of the components in nanophotonics make them promising for the construction of multi-component devices in telecommunication systems, planar sensors, and planar microparticle manipulating devices. The methods of focusing singular laser beams require additional relatively complicated investigations.