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Waveform degradation due to dispersion effects in an optical CPFSK system

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3 Author(s)
Tsubokawa, M. ; NTT Transmission Syst. Lab., Ibaraki, Japan ; Ohashi, M. ; Sasaki, Y.

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

Published in:

Lightwave Technology, Journal of  (Volume:8 ,  Issue: 5 )

Date of Publication:

May 1990

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