PPLN-based all-optical QPSK regenerator

Mazroa, Dániel; Puttnam, Benjamin J.; Szabó, Áron; Shinada, Satoshi; Wada, Naoya

doi:10.1109/icton.2013.6602882

Cited by 1 publication

(1 citation statement)

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“…The development of all-optical techniques capable of eliminating phase noise (and ideally amplitude noise as well) from multi-level phase signals is consequently of great interest. To date, optical regeneration of binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) signals has been successfully demonstrated exploiting the characteristics of either single-or dual-pump phasesensitive amplification (PSA), implemented in either highly nonlinear fibers (HNLF) [1][2], periodically poled Lithium Niobate (PPLN) waveguides [3][4], or semiconductor optical amplifiers (SOA) [5]. The regeneration of an M-PSK signal (where M is the number of phase levels used) is possible in principle in a dual pump PSA, but requires the generation of higher order phase harmonics [2], posing inherent practical difficulties.…”

Section: Introductionmentioning

confidence: 99%

Phase regeneration of an M-PSK signal using partial regeneration of its M/2-PSK second phase harmonic

Jones

Parmigiani

Petropoulos

et al. 2015

Optics Communications

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Abstract:We propose and numerically investigate a phase regeneration technique that allows an M-PSK signal to be phase regenerated by an M/2-PSK (or even M/4-PSK) phase regenerator (applicable for M = 2 k , with k an integer). This scheme comprises three main parts; firstly, phase harmonic generation is used to create the second and third phase harmonics, secondly, the second phase harmonic (a down-converted M/2-PSK signal) is partially phase-regenerated, and thirdly and finally, the partially regenerated second phase harmonic and the third phase harmonic are mixed together to re-synthesise a phase regenerated replica of the original signal.

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