Traveling-wave amplification photodetector (TAP detector)

We study a novel type of device, the traveling-wave amplification photodetector (TAP detector). We show that, in a sequential configuration, these devices produce more gain than classical traveling-wave photodetectors (TWPD's) with optical preamplification for the same saturation power, while in a parallel configuration they present gain-bandwidth products similar to those of classical TWPD's, with much larger saturation power.