发明名称 |
OPTICAL ISOLATOR COMPRISING A FARADAY ROTATOR |
摘要 |
An optical isolator comprises an optical element assembly (10) including a Faraday rotator (1) and a pair of polarizing elements (2) one of which is arranged on a light-input side of the Faraday rotator (1) to serve as a polarizer and other of which is arranged on a light-output side to serve as an analyzer. The optical element assembly (10) is received at the center of an inner bore or a cavity of a cylindrical iron-chromium-cobalt (Fe-Cr-Co) magnet (5). The Faraday rotator (1) comprises a magnetic garnet thick film which is a Bi garnet thick film remarkably low in saturation magnetization as compared with a rare-earth garnet. The Fe-Cr-Co magnet (5) serves as a fieldapplication magnet for generating a magnetic field applied to magnetize the Bi garnet thick film and also as an isolator casing because it is excellent in magnetic and mechanical characteristics.
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申请公布号 |
CA2324929(A1) |
申请公布日期 |
2000.08.03 |
申请号 |
CA20002324929 |
申请日期 |
2000.01.28 |
申请人 |
TOKIN CORPORATION |
发明人 |
SATOH, TADAKUNI;NAKAJIMA, TAKAHIRO;KIMURA, MASAYUKI |
分类号 |
G02B27/28;G02F1/09;(IPC1-7):G02F1/09 |
主分类号 |
G02B27/28 |
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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