40 Gb/s TDM system using InP HBT IC technology

A 40 Gb/s time-division-multiplexing (TDM) system transmitter and receiver with 4-channel 10 Gb/s interface is presented. InP DHBT IC technology is used to implement the complete chipset (4:1 multiplexer with VCO /clock multiplication unit, modulator driver, transimpedance amplifier, limiting amplifier and 1:4 demultiplexer with clock and data recovery). A 2.26 km long transmission experiment was performed using the system with 40 Gb/s, 2/sup 31/, NRZ PRBS. The transmit eye exhibits a high extinction ratio >12.5 dB with 1 ps added RMS jitter and 4 dbm output power. Receive sensitivity is better than -7.8 dBm with 0.22 dB dispersion penalty.