Abstract

Transfer of intensity noise from pumps to signal in dual-pump fiber-optic parametric amplifiers is simulated numerically for a realistic configuration in which both pumps are amplified and filtered before they enter the fiber. The walk-off effects induced by different group velocities of pumps, signal, and idler are fully taken into account. It is found that the optical signal-to-noise ratio can be as low as 15dB when the amplifier length is close to 0.5km, but it can be improved by 3dB or so by use of longer fibers.

© 2005 Optical Society of America

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