The amplified spontaneous emission (ASE) spectrum of a fiber optical parametric amplifier in a gain-saturation condition is studied. We experimentally observed holes around the signal and the idler in the ASE spectrum of a deeply gain-saturated amplifier. This observation is explained by a theoretical model that includes parametric interactions among ASE components and the pump, signal, and idler beams.
© 2001 Optical Society of America
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
Kyo Inoue and Takaaki Mukai, "Spectral hole in the amplified spontaneous emission spectrum of a fiber optical parametric amplifier," Opt. Lett. 26, 869-871 (2001)