Abstract

Long-haul wavelength-division multiplexing (WDM) transmission is being intensively studied because it is expected to realize higher capacity systems in the near future.^1–3 As four- wave mixing (FWM) degrades the transmission performance in WDM systems using dispersion-shifted fiber, unequal channel spacing allocation is generally employed. However, the required optical bandwidth and manage of optical-source wavelength are quite severe. This paper reports the results of WDM transmission experiments done using the FSA commercial submarine amplifier system,⁴ which manages the fiber dispersion to cable to transmit a single-NRZ 10-Gbit/s⁵ signal. If the influence of FWM can be suppressed in the dispersion-managed cable, WDM channel allocation could be simply realized without the need to consider nonlinear-induced degradation.

© 1996 Optical Society of America