The results of the successful operation of 35 channels with a transmission rate of 40 Gbit / s in each (with a total aggregate bandwidth of 1.4 Tbit / s) for 85 km per standard are presented. single-mode optical fiber. For error-free transmission, the dispersion compensation method was used. The experimental scheme is presented. installation and line characteristics. Data was transmitted in a format without returning to zero. For amplification, an optical amplifier with an erbium-doped optical fiber with an equalized coefficient was used. gain, and to compensate for dispersion - dispersion compensating fiber.
300 km transmission of 2.5 Gbit / s channels with a dense arrangement and direct modulation, demultiplexed using a demultiplexer on curved diffraction gratings.
The results of the experiment are presented. transmitting information on 4 channels with spectral multiplexing and demultiplexing 4 lasers with distributed OS and direct modulation at a speed of 2.5 Gbit / s per channel with a very narrow distance between the channels (~ 50 GHz) over a distance of> 300 km. The experiment was conducted on a test bench with a single-span recirculation loop built on an optical fiber with shifted dispersion. The circuit uses a bent diffraction grating demultiplexer.
Backbone data transmission technologies
Ways of solving problems generated by the rapid growth of data volumes transmitted over fiber optic links are considered. Two ways to solve this problem are revealed: the efficient use of bandwidth; increasing the capacity of the existing cable infrastructure through the use of modern optical technologies. The first method involves the construction and operation of intelligent ATM networks, which allow telecom operators to increase profitability due to new types of telecommunication services provided by the multiservice network and significantly reduce the cost of using trunk communication channels. The second way involves the use of DWDM technology. The advantages and disadvantages of each of these methods of solving the problem are considered.
cable installer certification
Evaluation of a fully optical 2 R regenerator at a transmission rate of 2.5 Gbit / s at 3600 km using only standard fiber.
Experiment proposed. fiber optic installation built on std. optical fiber without dispersion control circuits. A fully optical 2 R regenerator included in a 400 km regeneration loop allows transmitting at a speed of 2.5 Gbit / s over a distance of > 3600 km in a line with 100 km spacing of fiber amplifiers .
300 km transmission of 2.5 Gbit / s channels with a dense arrangement and direct modulation, demultiplexed using a demultiplexer on curved diffraction gratings.
The results of the experiment are presented. transmitting information on 4 channels with spectral multiplexing and demultiplexing 4 lasers with distributed OS and direct modulation at a speed of 2.5 Gbit / s per channel with a very narrow distance between the channels (~ 50 GHz) over a distance of> 300 km. The experiment was conducted on a test bench with a single-span recirculation loop built on an optical fiber with shifted dispersion. The circuit uses a bent diffraction grating demultiplexer.
Backbone data transmission technologies
Ways of solving problems generated by the rapid growth of data volumes transmitted over fiber optic links are considered. Two ways to solve this problem are revealed: the efficient use of bandwidth; increasing the capacity of the existing cable infrastructure through the use of modern optical technologies. The first method involves the construction and operation of intelligent ATM networks, which allow telecom operators to increase profitability due to new types of telecommunication services provided by the multiservice network and significantly reduce the cost of using trunk communication channels. The second way involves the use of DWDM technology. The advantages and disadvantages of each of these methods of solving the problem are considered.
cable installer certification
Evaluation of a fully optical 2 R regenerator at a transmission rate of 2.5 Gbit / s at 3600 km using only standard fiber.
Experiment proposed. fiber optic installation built on std. optical fiber without dispersion control circuits. A fully optical 2 R regenerator included in a 400 km regeneration loop allows transmitting at a speed of 2.5 Gbit / s over a distance of > 3600 km in a line with 100 km spacing of fiber amplifiers .
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