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A monitored power pre-checking scheme has been proposed and implemented for an effective optical amplification management in IP-over-CWDM networks with ROADMs. In the scheme, lightpaths are selected first to be checked whether the lightwaves should be amplified or not, before the lightpath reconfiguration, and the optical powers to be received by the optical transceivers for the lightpaths without...
A bidirectional amplification module has been proposed for use in IP-over-CWDM networks. The amplification is provided by a bidirectional Er3+-doped fiber amplifier. The results of a bidirectional IP transmission experiment using the module clarified that the loss of the transmission fiber in the network could be compensated.
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