Abstract
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 D 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.
Original language | English |
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Pages (from-to) | 1431-1440 |
Number of pages | 10 |
Journal | Journal of Lightwave Technology |
Volume | 25 |
Issue number | 6 |
DOIs | |
State | Published - 1 Jun 2007 |
Externally published | Yes |
Keywords
- Differential phase-shift keying (DPSK)
- Optical fiber communication
- Phase modulation
- Phase noise
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics