Frequency-domain differential phase-shift keying (FD-DPSK) of ultrafast laser pulses
The frequency-domain differential phase-shift-keying (DPSK) using ultrafast laser pulses has been demonstrated. Spectral coding based on acoustic optical modulator pulse shaping is used for modulation, and the ultrafast pulse characterization based on spectral interferometry is used for demodulation. The encoded differential phase pattern is successfully retrieved after transmission over 4-km dispersion-shifted fiber, which induces substantial nonlinear distortions.
Yang, W; Kobayashi, H; Warren, WS
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