Figure 12
From: On-chip sub-terahertz surface plasmon polariton transmission lines with mode converter in CMOS

(a) The simulated dispersion diagram with different groove depth h ranged from 2 μm to 14 μm in support of the mode conversion by gradient groove demonstrated in Fig. 11 and (b) Time-domain SPP signal supported by the dual side strips structure under the input of a Gaussian pulse with broadband signals from 0 to 500 GHz.