Theoretical study of gain distortions in dual-pump fiber optical parametric amplifiersReport as inadecuate




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1 FEMTO-ST - Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies 2 PhLAM - Laboratoire de Physique des Lasers, Atomes et Molécules Lille

Abstract : We study analytically and numerically the small signal gain in dual-pump fiber optical parametric amplifiers by including the phase modulation of the pump waves needed for practically increasing the stimulated Brillouin scattering threshold. As for the single-pump case, we show that large signal gain distortions are generated under co-phase modulation, which depend on the rise-fall time of the phase modulation and on the fiber dispersion slope. However, it is clearly confirmed that the counter-phase modulation scheme allows to effi-ciently suppress these gain distortions over the whole flat gain region. In addition, we demonstrate through realistic numerical simulations that this useful technique overcomes the additional impact of pump-phase modulation to amplitude modulation conversion and zero-dispersion wavelength variations.

Keywords : Fiber optical parametric amplifier Four-wave mixing phase modulation





Author: A. Vedadi - A. Mussot - E. Lantz - H. Maillotte - T. Sylvestre -

Source: https://hal.archives-ouvertes.fr/



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