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Error-free booster amplification in a 4-mm QD-SOA has been achieved with 1-dB OSNR-penalty up to +15dBm output power for single-channel 80-Gb/s RZ-OOK signals and up to +8.3dBm for 4-channel multi-wavelength (80-Gb/s RZ-OOK + 3 × 40-Gb/s NRZ-OOK) signals on a 5-nm grid.
An ultrafast bit rate and format transparent all-optical packet equalizer is presented, based on fiber-optic parametric amplification. Its equalizing performance is investigated for 43 Gbaud OOK, DPSK and DQPSK signals. The improvement is verified in transmission experiments over 1000km dispersion-managed fiber.
We experimentally demonstrate a chromatic dispersion monitoring technique utilizing a delay-line interferometer and a <;10-GHz photodetector for 40-Gb/s OOK/DPSK. Spectral shift of RF dip changing with up to 560-ps/nm-CD is measured insensitive to 23-ps-DGD and <;15-dB-OSNR.
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