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Dynamic phase and amplitude all-optical responses of silicon nanowires are characterized using a terahertz optical asymmetric demultiplexer (TOAD) based pump-probe scheme. Ultra-fast recovery is observed for moderate pump powers.
We experimentally demonstrate 80 Gbit/s wavelength conversion to two copies by simultaneously extracting the blue- and red-shifted sidebands from XPM in a silicon nanowire. Bit error rates of 10−9 with only ∼2 dB power penalty is achieved for both sidebands. Detailed pump-probe characterisation reveals amplitude and phase responses.
Measurements of amplitude and phase dynamics of a concatenated SOA-EAM-SOA show 1/e amplitude recovery times as short as 2.6ps under optimal conditions, with longer 1/e phase recovery times (≥38ps). Due to the extremely fast amplitude recovery, the impulse response consists predominantly of a phase component only.
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