Fig. 1: Schematic of the designed on-chip terahertz isolator.
From: On-chip terahertz isolator with ultrahigh isolation ratios
a Schematic of the on-chip terahertz isolator, including a ridge waveguide, a racetrack ring resonator, a piece of InSb, and a metal electrode (the inset shows the detail of the nonreciprocal region). b Simulated normalized electric field distribution (|E | ) of the ridge waveguide and the nonreciprocal region (in clockwise (CW) and counterclockwise (CCW) directions). c Calculated real (Re(Neff)) and imaginary (Im(Neff)) part of effective refractive indices of the nonreciprocal region with the increase of the magnetic field. d Transmission properties of the chip in reciprocal (B = 0 T) and nonreciprocal states (B = 0.3 T). In the calculations, the temperatures are set to 300 K.
