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Bit error rate measurements were performed on a 50 Gbit/s optical time domain multiplexed system which utilized the newly developed terahertz optical asymmetric demultiplexer (TOAD) device as the front end of a receiver. Bit error rates of less than 10/sup /spl minus/9/ were measured when 800 fj control pulses were used to gate the demultiplexer. These measurements, which were made on a 50 Gbit/s peak line-rate train, also quantified the tolerance of the TOAD to signal-control pulse jitter.< >