| 摘要 |
<p>A variable polarization rotation device for rotating the polarized light of the input light by utilizing the magneto-optical effect. The intensity of the magnetic field required for magnetic field generating means (42, 43, 44 and 45) to obtain the Faraday rotation by the same magneto-optical effect is considerably reduced by collecting the input light by a first light collecting means (3), and introducing the light onto a magneto-optical crystal (41) installed in the vicinity of a focal position thereof. The considerably reduces the size of the magnetic field generating means (42, 43, 44 and 45) themselves, which in turn considerably reduces the size of the variable polarization rotation device.</p> |
