—This letter demonstrates an ultrafast sample and hold circuit using optically triggered metal–semiconductor–metal switches made of low-temperature-grown GaAs for use in a photonic analog-to-digital conversion system. A differential configuration is incorporated to reduce feedthrough noise.
—We demonstrate 20-GHz input bandwidth of an optoelectronic sample-and-hold circuit using optically triggered metal–semiconductor–metal switches made of low-temperature grown GaAs. Linearity 4 effective-number-of-bits and an estimated 3-dB bandwidth of up to 63 GHz are observed for the sample-and-hold process, making the device a potential candidate for… (More)
We present a multifunctional photonic switch that monolithically integrates an InGaAsP/InP quantum well electroabsorption modulator and an InGaAs photodiode as a part of an on-chip, InP optoelectronic circuit. The optical multifunctionality of the switch offers many configurations to allow for different optical network functions on a single chip. Here we… (More)
Current optical-electronic-optical conversion (o-e-o) technology  requires propagating high-speed signals in the electronic domain and cascading separately packaged electronic and optoelectronic devices, resulting in increased cost, size, weight, power consumption, and heat radiation. For o-e-o conversion without the use of conventional electronics, we… (More)
We demonstrate 20 giga-sample/s (GSa/s) Nyquist operation capability of a sample and hold circuit using optically triggered metal-semiconductor-metal (MSM) switches made of low temperature (LT) grown GaAs. Good linearity and flat frequency response are achieved for the sample and hold process, indicating potential for much higher sampling rates. With the… (More)