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We demonstrate a scheme for reconfigurably selecting multiple tributaries of a 640-Gbit/s signal using cross-phase modulation in cascaded nonlinear optical loop mirrors (NOLMs). An average penalty of ~3.5 dB is introduced by each NOLM after arbitrarily selecting two 40-Gbit/s tributaries and subsequently redistributing them.
We demonstrate multicasting of 40 Gb/s NRZ-OOK data into 24 RZ copies using a single pump and supercontinuum generation. The NRZ signal is optically sampled and a supercontinuum is generated using the sampled signal. An average ∼1.6 dB power penalty is achieved for 24 channels at a BER of 10−9.
We experimentally demonstrate simultaneous two-channel wavelength conversion of 40-Gbit/s RZ-DPSK WDM signals using four-wave mixing (FWM) in a highly nonlinear fiber (HNLF) without additional pumps. A power penalty of <1 dB is observed as channel spacing varies from 200 GHz to 1 THz.
We experimentally demonstrate 40-to-320-Gbit/s phase-coherent WDM-to-TDM multiplexing based on cross-phase modulation (XPM) and subsequent 320-to-40-Gbit/s demultiplexing using XPM-induced frequency shift in highly nonlinear fibers. An average penalty of approximately 7 dB at 10-9 BER is observed after the nonlinear processes.
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