A Low Jitter 0.2 μm PHEMT 20 Gb/s 1:2 Demultiplexer

An integrated demultiplexer (DEMUX) for ultra high speed optical fiber communication systems has been described. The fabricated DEMUX operates error free at 20 Gb/s by 2
³¹
-1 pseudorandom bit sequences (PRBS) via on-wafer testing. The measured rms and p-p jitters of the output eye- diagram are just 1.2 ps and 5.6 ps respectively. The chip size is 1.8x0.9 mm
²
and its power dissipation is 720 mW.