Optical delay elements based on optical polymer waveguides for antenna systems with phased arrays are described. In the manufacture of ultra-low-loss optical waveguides, photolithography technology is used. The amount of insertion delay reaches several tens of ns, with a resolution of ≤1 ps. As part of the delay element, a PD is used, with the help of which the paths are switched with the choice of the delay time. System m. used to control phased array antennas in the range 11 ... 40 GHz. The generation of microwave signals with optical coding is performed using heterodyne devices based on semiconductor lasers. The system is made in the form of a monolithic microwave range IC.
The bandwidth of quad AM systems with subcarrier multiplexing using a Mach-Zehnder modulator as a transmitter.
The results of calculating the constraints imposed on the system throughput with quadrature AM channel subcarrier multiplexing and a laser transmitter with external modulation carried out by an optically linear Mach-Zehnder modulator, nonlinear distortion, and Gaussian noise are presented. The standard was calculated. a fiber-optic system with a total bandwidth of ~ 1.4 Gbit / s, coefficient single-bit error ~ 10 –9 and quadrature AM on 64 channels.
Suppression of stimulated Brillouin scattering in an optical communication system.
An optical transmitter circuit is proposed for a single-mode fiber communication system. The transmitter has a high output radiation power and significantly broadens the spectral width of the laser source used in it. The transmitter in question is capable of suppressing stimulated Brillouin scattering.
About the speeds of optical processing and transmission of information
google fiber technician salary
The possibility of increasing the speed of processing and transmitting information when using time compression, spatial and spectral separation of information flows is considered. It is shown that the processing speed of information in optical systems can reach ~ 10 16 bit / s, and the transmission speed over optical fiber - up to 10 14 bit / s.
Two-way optical transmission system and optical transceiver for pulse data.
The structure of a duplex fiber optic transmission system designed to transmit pulsed information is proposed. The system is able to adjust the deviation in the ratio between the speeds, for example, when transmitting a signal from the transceiver to the user and vice versa. An optical pulsed information transceiver has been developed, which can used in an optical access system for subscriber systems or KTV in which dense spectral multiplexing is used.
The bandwidth of quad AM systems with subcarrier multiplexing using a Mach-Zehnder modulator as a transmitter.
The results of calculating the constraints imposed on the system throughput with quadrature AM channel subcarrier multiplexing and a laser transmitter with external modulation carried out by an optically linear Mach-Zehnder modulator, nonlinear distortion, and Gaussian noise are presented. The standard was calculated. a fiber-optic system with a total bandwidth of ~ 1.4 Gbit / s, coefficient single-bit error ~ 10 –9 and quadrature AM on 64 channels.
Suppression of stimulated Brillouin scattering in an optical communication system.
An optical transmitter circuit is proposed for a single-mode fiber communication system. The transmitter has a high output radiation power and significantly broadens the spectral width of the laser source used in it. The transmitter in question is capable of suppressing stimulated Brillouin scattering.
About the speeds of optical processing and transmission of information
google fiber technician salary
The possibility of increasing the speed of processing and transmitting information when using time compression, spatial and spectral separation of information flows is considered. It is shown that the processing speed of information in optical systems can reach ~ 10 16 bit / s, and the transmission speed over optical fiber - up to 10 14 bit / s.
Two-way optical transmission system and optical transceiver for pulse data.
The structure of a duplex fiber optic transmission system designed to transmit pulsed information is proposed. The system is able to adjust the deviation in the ratio between the speeds, for example, when transmitting a signal from the transceiver to the user and vice versa. An optical pulsed information transceiver has been developed, which can used in an optical access system for subscriber systems or KTV in which dense spectral multiplexing is used.
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