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We experimentally demonstrate a tunable and reconfigurable optical tapped delay line using conversion dispersion based delays. Correlation and equalization functions are demonstrated. We observed a ~60% improvement of dispersion tolerance at an OSNR penalty of 3 dB.
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.
We experimentally demonstrate 8-fold multicasting of a 100 Gb/s polarization-multiplexed RZOOK data signal to 200 GHz spaced copies using a highly nonlinear fiber. Degenerate four-wave mixing in a bi-directional wavelength conversion scheme is employed. An average power penalty of ~4 dB at a bit error ratio of 10-9 is observed with over 45 nm of wavelength conversion bandwidth.
We demonstrate a new technique for fine tuning of optical delays using cascaded acousto-optic modulators. A 256-ns delay with <0.5-ps resolution is shown for 40-Gb/s RZ-OOK with no system penalty.
We demonstrate a 40 Gb/s optical buffer utilizing a 116 ns continuously tunable optical delay. 53 byte ATM packets are buffered up to a 10-packet-depth with a reconfiguration time of 25 ps (1 bit-slot). The buffer is capable of adjusting to varying packet sizes, data-rates, and modulation formats.
We demonstrate a tunable, optical delay element using selective wavelength conversion in a PPLN waveguide, dispersion compensating fiber, and intra-channel dispersion compensation. A continuous delay of up to 105-ns, equalling >4000 bit-slots at 40-Gb/s, is demonstrated using 80- Gb/s RZ-DQPSK, 40-Gb/s RZ-DPSK and 40-Gb/s RZ-OOK modulation formats.
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