Abstract

We investigate the gain spectral characteristics in the course of saturation in a Raman-assisted fiber optical parametric amplifier (FOPA). It is experimentally observed that the saturated gain spectrum is modified with suppressed signal wavelength dependence as compared to a conventional FOPA. The gain at signal wavelengths on both farther and closer sides of the unsaturated gain peak from the pump saturates in a similar way. The modification of the saturated gain spectrum is explained by distributed nonlinear phase mismatch caused by the Raman effect.

© 2014 Optical Society of America

Gain saturation in a Raman-assisted fiber optical parametric amplifier

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Signal wavelength dependence of gain saturation in a fiber optical parametric amplifier

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