40-gbit/s TDM transmission technologies based on ultra-high-speed IC's

This paper presents 40-Gbit/s time division multiplexing (TDM) transmission technologies based on 0.1-mu m-gate-length InP high electron mobility tran sistor IC's and a scheme for upgrading toward a terabit-per second capacity system. A 40-Gbit/s, 300-km, in-line transmission experiment and a dispers ion-tolerant 40-Gbit/s duobinary transmission experiment are described as 4 0-Gbit/s single carrier system applications on dispersion-shifted fiber. An ultra-high-speed receiver configuration using a high-output-power photodio de is introduced to realize fully electrical receiver operation beyond 40 G bit/s, The high-sensitivity operation of the optical receiver (-27.6 dBm @ BER = 10(-9)) is demonstrated at a data bit rate of 50 Gbit/s for the first time using a unitraveling carrier photodiode, A dense wavelength division multiplexing (DWDM) system operating up to terabits per second can be easil y realized on a zero-dispersion flattened transmission line using ultra-hig h-speed TDM channels of 40 Gbit/s and beyond. An experiment demonstrates 1. 04-bit/s DWDM transmission based on 40-Gbit/s TDM channels with high optica l spectrum density (0.4 bit/s/Hz) without dispersion compensation.