We demonstrate a tunable optical delay element using wavelength conversion in a highly nonlinear fiber, dispersion compensating fiber, and optical phase conjugation. A continuous delay of up to 1.16-μs equaling >55,000 symbols at 50 Gb/s, for 100 Gb/s NRZ-DQPSK and 50 Gb/s NRZ-DPSK modulation formats, is demonstrated.

© 2010 Optical Society of America

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