Length optimization of fiber optic regeneration section considering dynamic broadening of optical transmitter spectrum

With constant growth of transmission speed on fiber-optic links the problem of construction of optimum transmission path with use of the ultimate capabilities of the transmission system increases. Though application of optical amplifiers allows us to eliminate the limiting of the length of section between the transmitter and the receiver (or repeater), caused by attenuation of optical power, chromatic dispersion along with nonlinear effects and polarization mode dispersion remain the cause of limiting of the regeneration section length of FOCL. The chromatic dispersion accumulated along the single-mode optic fibre (SMF), can be balanced under certain conditions by application of passive dispersion compensators. Along with that, active methods of compensation of the dispersion are investigated and find more wide application, allowing us to use the ultimate capabilities of a transmission system for achievement of the maximum regeneration section length limited by chromatic dispersion. One such method based on use of optical transmitter dynamic spectrum broadening is investigated.