A bridge type optoelectronic sample and hold circuit

A novel bridge-type optoelectronic (OE) sample-and-hold circuit based on current steering is proposed and experimentally tested. Experimental comparison between this circuit and the conventional direct OE sample-and-hold circuit shows that the bridge type is clearly superior in performance to the direct OE circuit. When a high speed signal is sampled with high accuracy, the bridge-type OE sample-and-hold is potentially more advantageous over the conventional electronic sample and hold in terms of large charging current capability, commanding signal isolation, fabrication simplicity, accurate timing control, and less time jitter