DWDM

Paper Summary:

This paper explains that DWDM carries multiple optical signals across a single fiber optic cable simultaneously, but at different wavelengths so they do not interfere with each other, thus increasing its capacity because each individual signal can be transported at a different rate. The author points out that the largest stigma attached to DWDM is that, although it is reliable, at the present time virtually no companies exist, which require the enormous amount of bandwidth the system can provide. The paper relates that long distance companies have already begun to utilize the technology because DWDM provides more complex interconnect topologies as well as bandwidth capacities, which will be able to handle the telecommunications traffic of the future.

From the Paper:

"When networking was first conceived the amount of bandwidth, the average individual would use was greatly underestimated. In fact, "Most U.S. networks were built using estimates that calculated bandwidth use by employing concentration ratios derived from classical engineering formulas such as Poisson and Reeling." Essentially, this meant that the engineers who devised the first networks in the United States did not foresee the enormous influx of activity generated by the internet. Therefore, the networks were built upon the assumption that the average individual would only require six minutes of bandwidth per hour; but today, with internet traffic increasing by three hundred percent per year, individual bandwidth requirements have reached upwards of one hundred eighty minutes per hour. Not surprisingly, this has created some problems. "

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