Design and system demonstration of a tunable slow-light delay line based on fiber parametric process

We design a tunable slow-light delay line based on fiber-optic parametric process by shaping the gain bandwidth, with its operating wavelength in the present telecommunication window. We derive an analytical expression for the time delay and perform simulations for the delay lines made of dispersion-shifted fiber (DSF) and nonzero dispersion-shifted fiber, respectively. We also experimentally demonstrate the system performance of slow light by propagating 10-Gb/s return-to-zero data packets through such a tunable delay line based on DSF.