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Design principles are proposed for a secure subterahertz RoF segment providing independent optical modulation by radiochannel frequency characteristics and a phased antenna array beamsteering parameter. A design scheme of the RoF segment for the W-range is proposed. The results obtained include co-transmission of two modes (one of which is polarized), radio channel frequency properties control, orbital angular momentum signal shaping, co-transmission of a modulated optical signal and a polarized signal and orbital angular momentum signal. Simulation is carried out for signals with a given spin-orbit state based on a Hamiltonian approach. Results of a phase-amplitude filter calculation are presented.

This paper describes objectives on inner pipeline fault detection device modeling designated to monitor pipeline in real time. Due to high demands to high-speed and miniature measurements of such devices it is suggested to use implementations on the basis of fiber optic and radio-photonic mode of operation. A functional equipment design containing fiber optic generation and complex optic impulses transformation transmitted into radio trunk circuits are developed. Physical implementation of the suggested model is estimated as well as an analytical model for propagation of pilot signal on the basis of the Maxwell system of equations for partially conductive and simultaneously scattering medium.

The task of the antenna array radiation pattern optical control for ultra-wideband radio emission is considered in the paper. A fiber-optic phasing scheme is proposed, which is part of a complex fiber-optic device. The control device layout and the radio-photon segment layout photos are presented. An analytical model of the optical phasing process is developed that provides the frequency bands number calculation. The number of bands, on which a wide frequency range should be divided, depends on the permissible level of the array radiation pattern distortion. The results of experimental approbation of the radio lobe phasing control in the frequency band of 200 MHz, divided into 3 subbands of 70 MHz, are presented.

The paper considers the study of chirped optical signal application methods in perspective optical networks: RoF, PON and MAN categories. The principle of obtaining chirped optical pulses due to Mach-Zehnder chirping modulator control modes selection is proposed. A mathematical model is developed. It is shown that iterative selection of corrective chirp function is possible. The experimental approbation of the proposed principle is performed. It is also shown that the chirp function can be used to design all-optical network control devices.