Straight-Line Experiment and Numerical Simulation for RZ-Signal Long-Distance Transmission with Periodic Dispersion Compensation

Akira NAKA  Toshiya MATSUDA  Shigeru SAITO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E81-B   No.4   pp.722-728
Publication Date: 1998/04/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Optical Communication
Keyword: 
RZ signal,  transmission experiment,  numerical simulation,  dispersion compensation,  WDM,  

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Summary: 
RZ signal transmission in an anomalous region with periodic dispersion compensation is examined by a straight-line experiment in terms of the compensation ratio, the signal power, and the pulse width. The optimum condition enables single-channel 20-Gbit/s RZ signal and two-WDM-channel 20-Gbit/s signals (40-Gbit/s in total) to be transmitted over 5,520 km and 2,160 km, respectively. Numerical simulations with the assistance of a basic theory enables analysis of the experimental results. It is shown that the balance between the waveform distortion and the remaining Gordon-Haus jitter determines the optimum conditions to achieve the longest transmission distance. Excess dispersion compensation results in waveform distortion, while insufficient compensation causes a greater amount of remaining jitter. Moreover, spectrum deformation during propagation is experimentally and numerically clarified to have a large effect on the transmission performance, especially for WDM transmission.