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Article Excerpt
Staff
Sampling of products from the past year
Optical sampling for the next network
Staff
As optical network speeds increase to 40 Gbps and then 100 Gbps, the PSO-100 series of optical oscilloscopes can show the signals to you. The USB-based Models PSO-101 (one channel) and PSO-102 (two channels) use a sampling technique that creates a time-stretched copy of the original signal. The scopes convert elongated samples to electrical form before digitizing them, so they can use a sample rate in the tens of megasamples per second while maintaining 500-GHz overall bandwidth.
The oscilloscopes capture samples by using a short pulse that opens an optical gate to capture light. They convert the optical signal to electrical form and digitally process it, measuring jitter, rise time, fall time, eye amplitude, duty-cycle distortion, extinction ratio, and other parameters. EXFO , www.exfo.com .
Software analyzes 20-GHz RF signals
Staff
Tektronix's SignalVu vector-signal-analysis software for its DPO7000...
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