Abstract
The capacity of wavelength division multiplexing (WDM) transmission systems has been growing tremendously over the past years, and the massive growth in Internet usage creates a continuously increasing demand for high-capacity optical transmission links. Due to the widespread introduction of broadband access technology and the rapid growth in high-speed communication services, today’s metropolitan area networks (MANs) will lag behind the foreseeable bandwidth demands. To overcome this bottleneck, a cost efficient capacity enhancement of the currently deployed N×2.5-Gbit/s and N×10-Gbit/s WDM systems will be inevitable. The deployment of 40-Gbit/s WDM technology is discussed to meet the existing demand of higher transmission capacity even in the metro region, where the transmission links are sufficiently short to deploy first generation 40-Gbit/s WDM systems. The following drivers for the deployment of the 40 Gbit/s technology in the metro region are expected:
© 2005 Optical Society of America
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