Title :
Compensation for chromatic dispersion and nonlinear effect in high dispersive coherent optical repeater transmission system
Author :
Yamazaki, Shuntaro ; Ono, Takashi ; Ogata, Takaaki
Author_Institution :
NEC Corp., Kanagawa, Japan
fDate :
4/1/1993 12:00:00 AM
Abstract :
A design for a chromatic dispersion equalizer that provides 4.4 times higher efficiency in the dispersion compensation characteristics, compared with a conventional equalizer, is proposed. In addition, the amplitude response slope in the frequency domain is less than half of the conventional characteristic. This extends the compensation limit for chromatic dispersion up to 82500 ps/nm for a 2.5-Gb/s heterodyne system, which corresponds to a 4900-km normal dispersion fiber transmission system. A compensation method for modulational instability is also proposed. The method was confirmed by a 2.5-Gb/s continuous-phase frequency-shift-keying (CPFSK) 764-km normal dispersion fiber transmission experiment, with the abovementioned chromatic dispersion equalizer. Employing computer simulations, an over-1000-km normal dispersion fiber optical repeater transmission system with 2.5-Gb/s CPFSK heterodyne detection was shown to be feasible
Keywords :
compensation; demodulation; frequency shift keying; nonlinear optics; optical communication equipment; optical dispersion; optical links; optical modulation; repeaters; stability; 1000 km; 2.5 Gbit/s; 4900 km; 764 km; CPFSK; amplitude response slope; chromatic dispersion equalizer; compensation limit; computer simulations; continuous-phase frequency-shift-keying; dispersion compensation characteristics; frequency domain; heterodyne system; high dispersive coherent optical repeater transmission system; modulational instability; nonlinear effect; normal dispersion fiber transmission system; optical equalizer design; Chromatic dispersion; Delay; Equalizers; Fiber nonlinear optics; Frequency; Nonlinear optics; Optical mixing; Optical modulation; Repeaters; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
