| 摘要 |
<p>A distortion arrangement for analog optical communication systems is disclosed which is capable of compensating for system-level distortion attributable to a number of factors including, but not limited to, frequency-dependent transmitting device characteristics, transmission fiber dispersion, doped fiber amplifier gain variations. The distortion arrangement includes a distortion signal path (36) which is configured to characterize the total system nonlinearity, utilizing for example a harmonic generator (38), derivative generator (48), attenuating means (adjustable) (44,50) and time delay means (adjustable) (46,52). The distortion arrangement may be co-located with an optical transmitter and defined as a predistortion arrangement or, conversely, co-located with an optical receiver and defined as a postdistortion arrangement. In general, both a predistorter and postdistorter may be utilized. <IMAGE></p> |
