Title :
Waveform degradation due to dispersion effects in an optical CPFSK system
Author :
Tsubokawa, Makoto ; Ohashi, Masaharu ; Sasaki, Yutaka
Author_Institution :
NTT Transmission Syst. Lab., Ibaraki, Japan
fDate :
5/1/1990 12:00:00 AM
Abstract :
Waveform degradation due to polarization and chromatic dispersions in a single-mode fiber is calculated for a coherent CPFSK signal. For a single-mode fiber with polarization dispersion of ⩽1 ps, chromatic dispersion almost dominates the system. However, if a fiber has polarization dispersion of more than a few picoseconds and a chromatic dispersion of less than 0.1 ps/km/nm, which can be attained by using a dispersion-shifted fiber and/or by electric dispersion compensation, polarization dispersion will restrict transmission capacity. For instance, polarization dispersion of 5 ps will restrict a bit rate by ~60 Gb/s when chromatic dispersion is fully reduced using a dispersion-shifted fiber or applying electrical equalization
Keywords :
fibre optics; frequency shift keying; light polarisation; optical dispersion; optical modulation; 0.1 ps; 1 ps; 5 ps; bit rate; chromatic dispersions; coherent CPFSK signal; dispersion effects; dispersion-shifted fiber; electric dispersion compensation; electrical equalization; frequency shift keying; optical CPFSK system; polarisation dispersions; single-mode fiber; transmission capacity; waveform degradation; Bandwidth; Bit rate; Chromatic dispersion; Degradation; Optical distortion; Optical fiber dispersion; Optical fiber polarization; Optical fibers; Optical propagation; Propagation constant;
Journal_Title :
Lightwave Technology, Journal of
