Fully electrical 40-Gbit/s TDM system prototype and its application to 160-Gbit/s WDM transmission

This paper presents a 40-Gbit/s time-division multiplexing (TDM) system prototype based on InP HEMT digital IC technologies. High-output power photodiode directly drives the digital IC and achieves high-receiver sensitivity. Four-channel 40-Gbit/s wavelength-division multiplexing (WDM) transmission is successfully performed.