Experimental demonstration of all-optical tunable delay line based on distortion-less slow and fast light using soliton collision in optical fiber.

We experimentally demonstrate an all-optical tunable delay line based on slow and fast light using soliton collision in an optical fiber. By varying the amplitude, wavelength, and number of the control soliton pulses, we accomplish both distortion-less slow and fast light generation and achieve the consecutive temporal shift up to 7.3ps for a 4.1ps-width pulse, which corresponds to the maximum delay-to-pulse-width ratio of 1.8.