Title :
Three-level modulation scheme on standard fibers to extend the dispersion limit
Author_Institution :
Dept. of Electron., R. Inst. of Technol., Kista, Sweden
fDate :
4/1/1995 12:00:00 AM
Abstract :
Numerical simulations show that the impact of the pulse shape on the power penalty in intensity modulated systems with standard, nonlinear fibers is decisive. This can be used to define a three-level modulation scheme that makes use of the interaction between fiber dispersion and fiber nonlinearities. By adjusting the pulse shape and peak power in a three-level modulation scheme, the standard dispersion limit of 65 km at 10 Gb/s can be extended to 170 km. The control of the pulse shape can be accomplished in the electrical domain, and therefore the effects of fiber dispersion can be compensated electrically. This is very advantageous compared with dispersion compensation schemes in the optical domain
Keywords :
optical fibre communication; optical fibre dispersion; optical fibre networks; optical modulation; 10 Gbit/s; 170 km; 65 km; dispersion compensation; electrical domain; fiber dispersion; fiber nonlinearities; fiber transmission links; intensity modulated systems; numerical simulations; optical domain; peak power; power penalty; pulse shape; standard nonlinear fibers; three-level modulation; Fiber nonlinear optics; Frequency shift keying; Nonlinear optics; Optical attenuators; Optical fiber devices; Optical fiber losses; Optical pulse shaping; Pulse modulation; Pulse shaping methods; Shape control;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
