110Gb/s multiplexing and demultiplexing ICs

A 120Gb/s multiplexer and a 110Gb/s demultiplexer are implemented in an InP HBT process. They feature a direct drive series-gating configuration selector, an asymmetrical latch flip-flop, and broadband impedance matching with inverted micro-strip lines. Their input sensitivity is less than 100mVpp, and the output swing is more than 400mVpp.