Abstract
The inevitable light absorption in plasmonic waveguides (PWs) gives rise to heating of waveguides
themselves. Here the photothermal effects in nanowire PWs, slot PWs, channel PWs, dielectric-loaded PWs and hybrid PWs
are investigated in the cross section. The resistive heating is significant for all waveguides. The thermal feature
sizes of the PWs are the main factors limiting the integration density. The copper PWs show the largest temperature
rise compared with the gold PWs, the silver PWs and the aluminum PWs. These findings unveil the physical properties of
PWs from the photothermal perspective and provide insights into the underlying factors influencing the adoption of PWs
in optical interconnect.
© 2013 IEEE
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