| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a pre-equalized optical fiber communication system capable of compensating the dispersion of an optical transmission line precisely at a high speed. <P>SOLUTION: An optical communication node A on the transmission side includes: a precoder (variable dispersion compensation means) 4a for supplying a dispersion amount (dispersion compensation setting value) beforehand to input signals to be input to an input terminal 2a; an optimization means 21a for adjusting the dispersion amount; and an electric/optical converter (E/O) 5a for converting electric signals generated by supplying the dispersion amount to the input signals to optical signals to output them to the optical fiber transmission line 11. An optical communication node B on the reception side includes, an error correction circuit (FEC) 3 for detecting the number of bit errors of the optical signals propagated through the optical fiber transmission line 11; and a monitoring optical interface (OSC) 10 for returning the detected number of bit errors through the optical fiber transmission line 12 to the optimization means 21a of the optical communication node A on the transmission side. The optimization means of the optical communication node A on the transmission side adjusts the dispersion amount and controls it to an optimum value on the basis of the monitoring optical interface (OSC). <P>COPYRIGHT: (C)2010,JPO&INPIT |
