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Multichip Differential Phase-Shift-Keyed Transmission Over (Non)Linear Optical Channels

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4 Author(s)
Yadin, Yoav ; Technion-Israel Inst. of Technol., Haifa ; Nazarathy, M. ; Bilenca, A. ; Orenstein, M.

The recently introduced multichip differential phase-shift keying (MC-DPSK) optical transmission format, entailing the modulation of relative phases over a moving transmission window of successive chip intervals, is analytically and numerically analyzed. The maximum-likelihood optimal MC-DPSK receiver is derived and synthesized using integrated-optic Mach-Zehnder delay interferometers, whose electrical outputs are interpreted as generalized Stokes' parameters. The MC-DPSK performance over a nonlinear fiber channel, limited by the combination of amplified spontaneous emission noise and self-phase modulation, is further derived and simulated, demonstrating that the lowest complexity three-chip binary-phase MC-DPSK receiver provides an ~1-dB Q-factor advantage over conventional DPSK.

Published in:

Lightwave Technology, Journal of  (Volume:25 ,  Issue: 6 )