Abstract:
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A new optical transmission scheme which combines
polarization-shift keying and differential phase-shift keying on
the same optical carrier is proposed. Simulations carried out show
a considerable tolerance toward different physical impairments,
such as polarization-mode dispersion, nonlinear effects, and chromatic
dispersion. When compared to other multilevel modulation
formats, it shows the advantage of reusing the carrier power, thus,
sensitivity is improved |