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Broadband Single-Pumped Fiber-Optic Parametric Amplifiers

We analyze the impact of pump phase modulation (PM) on the bandwidth of single-pumped fiber-optic parametric amplifiers. The measured values and the calculations show that the impact on bandwidth by pump PM is small compared to the impact from the dispersion curvature. A bandwidth of 100 nm with a gain of 11.5plusmn2 dB is achieved. This is also used to build a widely tunable fiber ring laser