wavelength converters, and fabrics using optoelectronic (O/E/O) wavelength conver-
ters. The power consumption for each of the devices is as shown in Figs 17.23–17.25.
The power consumption of each of the SOA gates in the Benes fabric is taken
(optimistically) as 100 mW. The data in Table 17.2 were obtained by counting the
number of active devices and interconnects in the structures shown in Figs 17.27 and
17.29 for the AWG and CMOS switch fabrics, and in a large Benes array scaled
up from the structure shown in Figure 17.28 [56]. Note that only half of the 51,200
TWCs between the first and second and the second and third stages of AWGs in Figure
17.27 are active at any one time. Similarly, only half of the 51,200 interconnects
between the first