Fig. 5: Wideband waveguide metatronics and negative elements in silicon-based waveguide at terahertz.
From: Negative capacitors and inductors enabling wideband waveguide metatronics

a Structure of the optical waveguide in silicon substrate with photonic crystal cladding. b Waveguide metatronics in the silicon-based waveguide. c Field distributions in the waveguide with different circuit design. d Performance of the pair of positive capacitor and positive inductor in the silicon waveguide. e Performance of the compensated positive and negative elements in the silicon waveguide.