Tunable standing-wave field in layered photonic structures

In this paper we consider the tuning of the configuration of the optical field in a dielectric layer bordering a homogeneous media or a photonic crystal when changing the wavelength. Analytical consideration of the problem is carried out. It is shown that the most optimal configuration for effective tuning of the position of optical standing wave antinodes is the use of a photonic crystal as a substrate. In this case, the phase of the optical field inside the thin film strongly depends on the radiation wavelength (3.8 rad/$\mu$m) compared to the film without a photonic crystal (0.4 rad/$\mu$m). The results obtained are useful for applications in such areas as excitonics and magnonics, as well as for the development of methods for calculating photonic structures.