Magneto Optical Switch
The so-called magneto-optical switch uses the Faraday rotation effect to change the effect of the magneto-optical crystal on the plane of polarization of the incident polarized light by changing the applied magnetic field, thereby achieving the effect of switching the optical path. Compared with the traditional mechanical optical switch, it has the advantages of fast switching speed and high stability. Compared with other non-mechanical optical switches, it has the advantages of low driving voltage and small crosstalk. It can be foreseen in the near future. The magneto-optic switch will be a very competitive optical switch. The principle of the magneto-optical switch design The so-called Faraday rotation effect is the phenomenon that the polarization plane rotates when the linearly polarized light passes through the medium in the direction of the applied magnetic field. For a linearly polarized light propagating in the M direction along the medium, it can be decomposed into two circularly polarized lights rotating in opposite directions. If it is a real number, which means that the medium does not absorb light waves, then the two circularly polarized lights have no interaction. The ground propagates forward at two slightly different speeds. After exiting, there is only a phase difference between them, so that the resultant is still linearly polarized, but its polarization plane rotates with respect to the incident polarized light. This shows that when an applied magnetic field acts on the magneto-optical crystal, the polarization of the incident ray can be changed.
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