材料科学
光纤布拉格光栅
光学
磷
纤维
光电子学
长周期光纤光栅
光子晶体光纤
渐变折射率纤维
灵敏度(控制系统)
光纤传感器
复合材料
物理
电子工程
波长
工程类
作者
Torsten Wieduwilt,Sven Brückner,Hartmut Bartelt
标识
DOI:10.1088/0957-0233/22/7/075201
摘要
Fiber Bragg gratings inscribed in the waist of tapered photosensitive fibers offer specific attractive properties for sensing applications. A small-diameter fiber reduces structural influences for imbedded fiber sensing elements. In the case of application as a force-sensing element for tensile forces, sensitivity scales inversely with the fiber cross-sectional area. It is therefore possible to increase force sensitivity by several orders of magnitude compared to Bragg grating sensors in conventionally sized fibers. Special requirements for such Bragg grating arrangements are discussed and experimental measurements for different fiber taper diameters down to 4 µm are presented.
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