TY - JOUR
T1 - Pump-To-Signal Intensity Modulation Transfer Characteristics in FOPAs: Modulation Frequency and Saturation Effect
AU - Lali-Dastjerdi, Zohreh
AU - Cristofori, Valentina
AU - Lund-Hansen, Toke
AU - Rottwitt, Karsten
AU - Galili, Michael
AU - Peucheret, Christophe
PY - 2012
Y1 - 2012
N2 - This paper reports a comprehensive study of pump- to-signal intensity modulation transfer (IMT) in single-pump fiber optic parametric amplifiers (FOPAs). In particular, the IMT is studied for the first time for high-frequency fluctuations of the pump as well as in the saturated gain regime. The IMT cut-off frequency in typical single-pump FOPAs is around 100–200 GHz. The possibilities to shift this frequency based on dispersion and nonlinearities involved in the parametric gain are discussed. The severe IMT to the signal at low modulation frequencies can be suppressed by more than 50% in the gain saturation regime with respect to the linear gain operation. Experimental results confirm the validity of the numerical study.
AB - This paper reports a comprehensive study of pump- to-signal intensity modulation transfer (IMT) in single-pump fiber optic parametric amplifiers (FOPAs). In particular, the IMT is studied for the first time for high-frequency fluctuations of the pump as well as in the saturated gain regime. The IMT cut-off frequency in typical single-pump FOPAs is around 100–200 GHz. The possibilities to shift this frequency based on dispersion and nonlinearities involved in the parametric gain are discussed. The severe IMT to the signal at low modulation frequencies can be suppressed by more than 50% in the gain saturation regime with respect to the linear gain operation. Experimental results confirm the validity of the numerical study.
KW - Optical fiber
KW - Four-wave mixing
KW - Optical parametric amplifiers
KW - Intensity modulation
KW - Optical saturation
U2 - 10.1109/JLT.2012.2211997
DO - 10.1109/JLT.2012.2211997
M3 - Journal article
SN - 0733-8724
VL - 30
SP - 3061
EP - 3067
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 18
ER -