Fig. 1. Structure of three layers magneto-optical planar waveguide.

Fig. 2. The one-way propagation mode of the magnetic current source excitation, the figure shows the evolution of the electric field amplitude along the propagation direction. (The thickness of the Si and magneto-optical materials InSb are 0.6 μm and 8 μm, the applied magnetic field strength is 0.3 T, and the electromagnetic frequency is 1.56 THz.)

Fig. 3. Dispersion curve of the gyromagnetic plane waveguide (a)−(c)H₀ = 600 Oe, d = 0.08λ_m, 0.13λ_m, 0.25λ_m; (d) H₀ = 2600 Oe, d = 0.08λ_m

Fig. 4. Dispersion curve of the gyroelectric plane waveguide (a)−(c)B₀ = 0.3T, d = 0.08λ_p, 0.13λ_p, 0.2λ_p; (d) B₀ = 1.5 T, d = 0.08λ_p

Fig. 5. One-way propagation mode bandwidth of the gyromagnetic waveguide (a) Forward one-way propagation mode; (b) Backward one-way propagation mode

Fig. 6. One-way propagation mode bandwidth of the gyroelectric waveguide (a) Forward one-way propagation mode; (b) Backward one-way propagation mode