connected to the signal line (anode) of the EAM by a thin-film microstrip line.
An optical input generates a positive drive voltage for the EAM. Thus, the
PD-EAM functions as a transmission-type optical gate. A gate window of
2.3 ps and optical pulse gating at a corresponding data rate of 500 Gb/s were
reportedbyS.Kodamaetal.[85].High-speedopticalgatinghasbeenusedto
achieve 320–10-Gb/s demultiplexing [82]. The demultiplexer consisted of a
PD-EAM, two Er-doped fiber amplifiers (one to generate a voltage pulse in the
UTC photodiode and the other as the signal input to the EAM), and a variable
optical delay line. For the demultiplexed 320-Gb/s input signal, the receiver
sensitivity was –18 dBm at 10
–9
bit error rate. The PD-EAM can also be used for
wavelength ...