Ks. Giboney et al., TRAVELING-WAVE PHOTODETECTOR DESIGN AND MEASUREMENTS, IEEE journal of selected topics in quantum electronics, 2(3), 1996, pp. 622-629
A simple and accurate design method for traveling-wave photodetectors
is presented and illustrated by example. Fully distributed, hybrid-cop
lanar, traveling-wave photodetectors are designed. Linear and nonlinea
r responses are measured, and linear responses are compared with desig
n predictions. Record bandwidths of 190 GHz and record bandwidth-effic
iency products of 84 GHz are measured. Behavior under high-power illum
ination is investigated and contrasted with lumped-element photodetect
ors. A phenomenological model, implying fundamental bandwidth-power li
mitations, is used to interpret the results.