发明名称 |
OPTICAL FIBER SENSORS BASED ON PRESSURE-INDUCED TEMPORAL PERIODIC VARIATIONS IN REFRACTIVE INDEX |
摘要 |
A optical fiber sensor for measuring temperature and/or pressure employs temporally created long period gratings. The gratings may be produced by a periodic change in the refractive index of the fiber along the fiber longitudinal axis caused by periodically spaced compressive and/or expansive forces or by spaced-apart unbalanced forces that cause periodic fiber micro-bending. Pressure and temperature are determined by measuring changes in both the wavelength at which light is coupled from a mode guided by a core to a different mode and an amount of such coupling. The gratings are created intrinsically and extrinsically. Single and multiple core fibers are used.
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申请公布号 |
US2006291768(A1) |
申请公布日期 |
2006.12.28 |
申请号 |
US20060469759 |
申请日期 |
2006.09.01 |
申请人 |
VIRGINIA TECH INTELLECTUAL PROPERTIES, INC. |
发明人 |
WANG ANBO |
分类号 |
G02B6/00;G01D5/353;G01L1/24;G02B6/02 |
主分类号 |
G02B6/00 |
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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