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Internet infrastructures in most places of the world have been supported by the advancement of optical fiber technology, most notably Wavelength Division Multiplexing (WDM) system. Optical technology by means of WDM system has revolutionized long distance data transport and has resulted in high data capacity, cost reductions, extremely low bit error rate, and operational simplification of the overall Internet infrastructure. This paper analyses and compares the system impairments, which occur at data transmission rates of 2.5 Gb/s and 10 Gb/s per wavelength channel in the proposed optical WDM system for Internet infrastructure in Tanzania.
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