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We propose a dispersion monitoring technique using the power ratio of two RF tones with a dispersion offset, and demonstrate that this technique can monitor a wide range of accumulated dispersion with a good sensitivity.
We have demonstrated 10 stages cascaded wavelength conversion over 800 km transmission for 10 Gb/s RZ-DPSK format using FWM in SOA. The performance of wavelength conversion for RZ-DPSK format is much better than that for OOK format.
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