Figure 2

Simulation.
(a) Magnetic field profiles of the two eigenmodes when θ of the first eigenmode is 45°(i) and 22.5° (ii), respectively. Arrows show the electric field direction. (b,c) Ey and Ez distribution along xy surface in the center of Si layer for the case TE(Ey dominant) is injected and wm is 140 nm (b) and 200 nm(c). (d–f) Polarization states on the Poincaré sphere of the output with finite long metal for rotating TE to (d) TM, (e) circular and (f) linear 45° polarization. The red points on the Poincaré sphere stand for the position of the output polarization states.