—We report on a novel monolithic distributed traveling wave photodetector with parallel optical feed to an array of individual photodiodes using an integrated multimode interference (MMI) coupler to attain high saturation current. The parallel optical feed reduces the maximum photocurrent and photocurrent density seen by any single photodiode, thus… (More)
We report on the first demonstration of velocity matched distributedp-in photodetectors. Record high linear DC photocurrent of 45 mA has been achieved without suffering from thermal damage, thanks to the superior power handling capability of pin photodiodes. The frequency response is flat from 1 GHz to 35 GHz.
—This paper describes the design, fabrication, and measurement of backward-wave-cancelled distributed traveling-wave photodetectors. One of the fundamental issues in traveling-wave photodetectors is the generation of backward waves , which reduces bandwidth or, in the case of matched input termination, reduces their radio-frequency (RF) efficiencies by up… (More)