发明名称 |
Faraday rotator and optical device comprising the same, and antireflection film and optical device comprising the same |
摘要 |
The invention relates to an optical device for polarizing light by changing its Faraday rotation angle, such as optical attenuators, optical switches or polarization controllers; and its object is to provide such an optical device which can be driven even by small-sized and power-saving magnetic circuits and in which the insertion loss in the Faraday rotator may be reduced. The optical device comprises a Faraday rotator formed of a garnet single crystal, and a magnetic circuit applying an external magnetic field H that is smaller than the saturation magnetic field Hs of the Faraday rotator to the Faraday rotator.
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申请公布号 |
US6853473(B2) |
申请公布日期 |
2005.02.08 |
申请号 |
US20030347264 |
申请日期 |
2003.01.21 |
申请人 |
TDK CORPORATION |
发明人 |
OHIDO ATSUSHI;TOHCHI KENICHI;YAMASAWA KAZUHITO;KAKEI SHINICHIRO |
分类号 |
G02F1/00;G02F1/09;(IPC1-7):G02F1/09 |
主分类号 |
G02F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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