40 Gb/s TDM System Using InP HBT IC Technology

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, 231-1, 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. I