Over-100-Gb/s 1:2 Demultiplexer Based on InP HBT Technology

A 1:2 demultiplexer (DEMUX) IC based on InP HBT technology and operating over 100 Gb/s was developed. This IC provides high-speed operation with high signal quality and a wide timing margin by means of broadband impedance matching with double terminations and interconnection lines with a low phase constant in the data and clock distributions. It also obtains excellent eye openings with 550-mV
_p-p
output voltage swings, less than 600-fs rms jitter, and error-free operation for 2
³¹
-1 at a data rate of 100 Gb/s. Moreover, mounted in a module, the DEMUX IC chip enables module operation at a data rate of 110 Gb/s. To the best of our knowledge, this is the highest data rate yet reported for DE-MUXs.