Phase Regeneration of QPSK Signal in SOA Using Single-Stage,Wavelength Converting PSA

Author:

Bottrill, K. R. H.  Kakarla, R.  Parmigiani, F.  Venkitesh, D.  Petropoulos, P.  

Journal:

IEEE PHOTONICS TECHNOLOGY LETTERS

Issue Date:

2016

Abstract(summary):

We demonstrate, for the first time, all-optical phase regeneration of a quaternary phase shift keying signal through phase sensitive amplification in nonlinear semiconductor optical amplifiers (SOAs), using a scheme only previously demonstrated in highly nonlinear fibre. We make use of a highly tunable phase quantizing scheme to circumvent some of the limitations imposed by the use of SOAs and show that it may function in either a conjugating or nonconjugating manner.

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