Transformation of the spectral density of intensity fluctuations of the pulsed radiation from a quasi-single-mode heterolaser in an optical fiber

The spectral density of intensity fluctuations of quasi-single-mode heterol aser radiation under pseudorandom pulsed modulation of the pumping current has been studied for the first time by numerical methods. In the limit of t he second-order dispersion theory, the effect of the chromatic dispersion o f an optical fiber on the noise characteristics of laser radiation (spectra l density of fluctuations and signal-to-noise ratio in the operating range of the photodetector) was investigated. The effect of the laser parameters and modulation on the transformation of the intensity fluctuations in a fib er-optic communication line was studied. (C) 2000 MAIK "Nauka/Interperiodic a".