Multiple four-wave mixing process in an optical fiber

We report the results of a theoretical and experimental investigation of multiple four-wave mixing processes in the simultaneous propagation of two pump waves through an optical fiber. The pump waves at frequencies omega(1) and omega(2) are observed to generate sidebands at 2omega(2) - omega(1) and 2omega(1) - omega(2) owing to four-wave mixing in the fiber. The power in the sidebands is studied as a function of pump power and detuning. The experimental observations provide a direct verification of the theoretical formalism.