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Performance evaluation of a silicon waveguide for phase regeneration of a QPSK signal

: Liebig, E.; Sackey, I.; Richter, T.; Gajda, A.; Peczek, A.; Zimmermann, L.; Petermann, K.; Schubert, C.


Journal of Lightwave Technology 35 (2017), Nr.6, S.1149-1156
ISSN: 0733-8724
Deutsche Forschungsgemeinschaft DFG
GR 3774/1-2
Fraunhofer HHI ()

In this paper a silicon-on-insulator nanorib waveguide with reverse-biased p-i-n- junction is used to experimentally demonstrate phase-sensitive amplification based on four-wave mixing for the realization of an in-line four-level phase-regenerator. Phase regeneration of a 14-GBd quadrature phase-shift keying signal is demonstrated for the first time employing a silicon waveguide as phase sensitive amplifier. The regenerator is placed in a 1040-km dispersion-managed link and it is shown that phase noise accumulation in the transmission link can be reduced by the use of the in-line silicon-based phase-regeneration.