Wideband and Ultra-Narrowband Discrete Frequency Packets for Solving Problems of Spectral Tuning of Mobile 5G+ Access Networks Fiber-Optic Transport Domains Upload Channels

Theoretical and practical results of the search for ways to improve the metrological and technical and economic characteristics of central wavelength monitoring and control systems, namely, initialization, correction and restructuring of the carrier of uplink transmitters of transport domains of 5G+ access networks, are presented. The solutions found are based on microwave photonic approaches with the formation of wideband and ultra-narrowband discrete frequency packets, as well as their combinations. Analysis methods and principles for constructing carrier wavelength monitoring and control systems have been developed. Symmetrical and asymmetric multi-frequency probing emissions have been formed, which make it possible to obtain control signals proportional to the result of comparing the carrier wavelength and the central wavelength of the channel when probing a dedicated channel of the AWG multiplexer. On their basis, monitoring and control systems with an improved signal-to-noise ratio, sensitivity, accuracy and speed, as well as reduced manufacturing and operating costs have been built.

microwave photonics, wideband discrete frequency package, ultra-narrowband discrete frequency package, access network transport domain, central wavelength of the uplink channel, transmitter carrier wavelength, initialization, correction, restructuring, microwave photonic spectrum analyzer