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We experimentally demonstrate chromatic dispersion insensitive monitoring of either time misalignment or PMD accumulation in an 80-Gb/s Pol-MUX RZ-DPSK signal using a polarimeter. The monitored DOP decreases 20% and 10.8% with 12.5-ps time misalignment at the transmitter and 12-ps in-line DGD, respectively.
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.
We experimentally demonstrate a PMD monitoring technique utilizing the polarizer and low-speed detector for 80-Gb/s pol-muxed RZ-DPSK. RF power increment of 16.2 dB, insensitive to 0~100 ps/nm chromatic dispersion, is measured in the presence of 0~12 ps DGD.
We experimentally demonstrate an OSNR monitoring technique for 80-Gb/s polarization-multiplexed RZ-DPSK utilizing narrowband optical filter and RF spectrum analysis. Maximum RF power increment of 19.7 dB, insensitive to CD and PMD, is measured for monitoring of OSNR up to 27 dB.
A photonic integration platform to integrate high speed waveguide detectors and low loss passive waveguides has been realized. A DQPSK receiver operating at 107 Gb/s based on this integration scheme has been demonstrated.
We experimentally demonstrate an all-optical chromatic dispersion monitoring technique utilizing cross-phase modulation in highly-nonlinear fiber for 40-Gb/s RZ-DPSK. Maximum monitored power variation of 16.5-dB is achieved in the presence of up to 120-ps/nm chromatic dispersion.
We demonstrate 42 ps delay on 10.7-Gb/s DPSK signals via SBS-based slow light. Slow-light-induced DPSK-data-partern dependence is analyzed and its reduction results in 3-dB Q factor improvement. NRZ-DPSK and RZ-DPSK system performances are compared.
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