High speed and high power performances of LTG-GaAs based TWPDs in telecommunication wavelength (/spl sim/1.3 /spl mu/m)

Summary form only given. We demonstrate ultra-high speed and high saturation power performance of LTG-GaAs based MSM traveling-wave photodetectors (TWPDs) in the telecommunication wavelength regime (/spl sim/1300 nm). Due to the short carrier trapping time of the LTG-GaAs layer and the superior microwave guiding structure in MSM TWPDs, record ultra-high peak power bandwidth product performance has been obtained in long absorption length devices. These results suggest applications in low-cost GaAs based photo-receiver circuits without electrical pre-amplifiers and high power photomixer devices which are compatible with fiber optical communication components.