
Furthermore, it includes a de-interleaver to divide an incoming stream of
100-GHz-spaced channels into two streams of 200-GHz-spaced channels and a
corresponding interleaver.
This 1 9 WSS PLC, along with a band de/multiplexer PLC, were developed to
create a modular 80-channel ROADM, shown in Figure 9.55 [73].
9.5 INTRA-SIGNAL CONTROL DEVICES
Non-technical overview: By intra-signal control, we mean control of the charac-
teristics of the spectrum of a single wavelength channel. The devices in this section
are dynamic devices that can modify the waveforms of optical signals, in order to
create desired pulse shapes, overcome transmission impairments,