发明授权
- 专利标题: Optical fiber sensor
- 专利标题(中): 光纤传感器
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申请号: US12529865申请日: 2008-01-07
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公开(公告)号: US08285086B2公开(公告)日: 2012-10-09
- 发明人: Satoshi Nishikawa , Masakazu Takabayashi , Kiichi Yoshiara , Eiji Yagyu , Tateki Mitani , Yutaro Hamatani
- 申请人: Satoshi Nishikawa , Masakazu Takabayashi , Kiichi Yoshiara , Eiji Yagyu , Tateki Mitani , Yutaro Hamatani
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Electric Corporation
- 当前专利权人: Mitsubishi Electric Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2007-059311 20070309; JP2007-059312 20070309
- 国际申请: PCT/JP2008/050029 WO 20080107
- 国际公布: WO2008/111320 WO 20080918
- 主分类号: G02B6/00
- IPC分类号: G02B6/00 ; G02B6/34
摘要:
An optical fiber sensor measuring refractive index of a medium with high sensitivity in a wide range. The optical fiber sensor includes an optical fiber causing a transmission loss due to leakage in the clad propagation mode from a portion of a core and a clad where a Bragg grating is provided, a light source permitting light in a wavelength band in the clad propagation mode to enter the optical fiber, and a light-receiving section receiving the transmitted or reflected light transmitted through the core and the clad at the portion where the Bragg grating is provided. The refractive index of the medium to be measured in contact with the clad is measured according to total intensity of the light received by the light-receiving section. The Bragg grating is inclined at a predetermined angle of inclination to the vertical line vertical to the length direction of the optical fiber.
公开/授权文献
- US20100080502A1 OPTICAL FIBER SENSOR 公开/授权日:2010-04-01