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Recent experiments incorporating multiple fast switching elements and automated system configuration in a circulating loop apparatus have enabled the study of aspects of long-haul WDM transmission unique to optically transparent networks. Techniques include per-span switching to measure the performance limits due to dispersion compensation granularity and mesh network walk-off, and applied constant-gain...
We show that a sensitivity of 0.5 dB is required for using Q-factor to monitor noise for fault localization and analyze monitoring without dispersion compensation in 10 Gb/s networks with symmetric dispersion maps.
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