We report on the observation of widely tunable optical parametric generation in a photonic crystal fiber. The frequency shift of the generated sidebands that arise from modulational instability is strongly dependent on the detuning of the pump from the fiber’s zero-dispersion wavelength. We are able to demonstrate experimentally more than of sideband tunability as we tune the pump wavelength over . Excellent agreement has been found between the experimentally measured and theoretically predicted shifts.
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