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Quaternary optical transmission system combining phase and polarization-shift keying

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3 Author(s)
Comellas, J. ; Dept. Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain ; Gene, J.M. ; Prat, J.

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.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 7 )