Limits on energy consumption in digital optical integrated circuits (ICs) using conventional and plasmon waveguide interconnects are presented. The maximum allowable on-chip power density imposes a lower limit on the spacing between devices and together with clock skew imposes an upper limit on the clock frequency. Optical ICs with low-loss plasmon waveguide interconnects may become viable if plasmon waveguide losses in the range 0.1-0.01 dB/m can be achieved.
Published in:
Photonics Technology Letters, IEEE
(Volume:19
,
Issue:
24
)
Date of Publication: Dec.15, 2007