Presented in the textbook materials relate to the disclosure of the common features of radio and optical telecommunication systems. In detail the device and principles of operation of gas, solid and semiconductor lasers, photodetectors, key photoelectric devices, phototransistors, of photothyristors. The studied display device. Great attention is paid to the elemental basis of fiber-optical systems of collecting and information transfer.
Meets the requirements of Federal state educational standards of higher education of the last generation.
For students in the areas of "Photonics and Optoinformatics", "Instrumentation" and "optical engineering".
Asymmetric optical transmission plays a key role in many optical systems. In this work, we propose and numerically demonstrate a dielectric–metal metasurface that can achieve high-performance asymmetric transmission for linearly polarized light in the near-infrared region. Most notably, it supports a forward transmittance peak (with a transmittance of 0.70) and a backward transmittance dip (with a transmittance of 0.07) at the same wavelength of 922 nm, which significantly enhances operation bandwidth and the contrast ratio between forward and backward transmittances. Mechanism analyses reveal that the forward transmittance peak is caused by the unidirectional excitation of surface plasmon polaritons and the first Kerker condition, whereas the backward transmittance dip is due to reflection from the metal film and a strong toroidal dipole response. Our work provides an alternative and simple way to obtain high-performance asymmetric transmission devices.
Correction of parameters of fiber-optical systems on the basis of the magneto tunable gradient elements