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Fiber-wireless mm-wave transmission systems with reduced effect of fiber chromatic dispersion.

By niveksuhail

Fiber-wireless mm-wave transmission systems with reduced effect of fiber chromatic dispersion.

2 methods for the implementation of mm-band wireless communication systems, which include fiber-optic distributed networks, are described. Each combined system includes a method for generating and modulating an optical carrier of mm waves, which can significantly reduce the effect of chromatic dispersion of the fiber. Data transmission using external modulation of a two-mode signal and the reduced effect of fiber dispersion is considered.

Optical regeneration for optical fiber transmission systems of soliton signals.

A regenerator is proposed for a soliton signal transmission system. This regenerator comprises a ring fiber laser in which a modulator is integrated, organs for connecting an input signal to be regenerated at the input of the modulator so as to block the laser mode, and organs for connecting at the output of the regenerated signal modulator. The soliton signal to be regenerated provides blocking of the laser mode. At the same time, the signal circulating in the laser provides modulation of the soliton signal, which is so on. regenerated. In this case, phase or intensity modulation can be used, or both of these types of modulation. It is proposed to use a ring-type fiber laser or a Fabry-Perot laser as a laser. As a modulator, you can use a nonlinear loop mirror or a semiconductor optical amplifier.
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The effect of impulse noise caused by a one-way restriction in video transmission systems.

The results of a study of the influence of impulse noise caused by a one-way restriction in multichannel video transmission systems with external modulators and AM / M - QAM are presented. Received coefficient. the occurrence of a single-bit error for M - QAM signals for the case of limitation on both sides. Results theor. research is in good agreement with experiment. data for 1319 and 1550 nm wavelengths in systems on a laser transmitter with an external modulator.

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