发明授权
- 专利标题： Fiber optical magnetic field sensor using magnetostrictive material
- 专利标题（中）： 使用磁致伸缩材料的光纤光磁传感器
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申请号： US241290申请日： 1981-03-06
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公开(公告)号： US4376248A公开(公告)日： 1983-03-08
- 发明人: Thomas G. Giallorenzi , George H. Sigel, Jr.
- 申请人： Thomas G. Giallorenzi , George H. Sigel, Jr.
- 申请人地址： DC Washington
- 专利权人： The United States of America as represented by the Secretary of the Navy
- 当前专利权人： The United States of America as represented by the Secretary of the Navy
- 当前专利权人地址： DC Washington
- 主分类号： G01R33/02
- IPC分类号： G01R33/02 ; G01R33/032 ; G02F1/01 ; G02B5/14
摘要：
A sensing element of magnetostrictive material associated with an optical fiber of an interferometer arm defining apparatus for detecting magnetic fields. The magnetostrictive material is adhered in close co-extensive adjacency with the optical fiber and in the presence of a magnetic field undergoes responsive longitudinal dimension changes which strains the optical fiber and induces a strain related phase shift in an optically propagating beam in the fiber detectable by interferometry.