| 摘要 |
It is possible to reduce the size of a magneto-optical device, increase the speed of optical control, simplify power supply structure and its control, and maintain a Faraday rotation angle in an arbitrary state even after shut-off of the excitation current. The magneto-optical device includes a magnetic yoke ( 10 ) made of a high-permeability magnetic material, the magnetic yoke including a tabular portion ( 16 ) and four pillar portions ( 18 ) protruding from one side of the tabular portion ( 16 ), a coil ( 12 ) wound on each of the pillar portions, and a magneto-optical element ( 14 ) arranged in an open-magnetic-circuit region surrounded by the end portions of the four pillar portions. A magnetic field obtained by a coil is applied to the magneto-optical element.
|
