Broad-band continuous-wave-pumped fiber optical parametric amplifier with 49-dB gain and wavelength-conversion efficiency

By J. Hansryd, Peter A. Andrekson. IEEE Photonics Technology Letters, 2001

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Polarization-independent two-pump fiber optical parametric amplifier (2002, background): “Fiber-optical parametric amplifiers (OPAs) have many attractive features, such as the wide bandwidth [1] and high signal gain [ 2 ], but unfortunately they are not polarization-independent in their simplest forms; thus they need to be modified to become polarization-independent.”
Noise characteristics of fiber optical parametric amplifiers (2004, methodology): “During the last few years, such highly nonlinear fibers (HNLF) have been introduced and FOPA fiber gains as high as 50 dB have been experimentally demonstrated [3].”
Parametric amplifiers driven by two pump waves (2002, methodology): “The parameters are representative of the (one-pump) experiments of Marhic [3] and Hansryd [ 4 ].”
Fiber-optical parametric amplifier with 70-dB gain (2006, methodology): “Previously, a continuous-wave pumped FOPA was reported with a gain of 49 dB by removing the optical bandpass filter (OBPF) after the high output power EDFA used to amplify the pump signal in order to reach higher pump power into the amplifying fiber [3].”
Fiber-based optical parametric amplifiers and their applications (2002, background): “4 shows the measured gain slope for the same experimental fiber parameters [5].”