Novel optical fiber sensor

The invention discloses a novel optical fiber sensor, the novel optical fiber sensor comprises an optical fiber main body and a sensing film covering the surface of the optical fiber main body, the optical fiber main body comprises two symmetrically distributed bipyramid structures, and the sensing film is used for chelating with heavy metal ions. The novel optical fiber sensor provided by the invention comprises two symmetrically distributed double-cone structures, so that more high-order cladding films can be excited, the response to the environment is increased, and the sensitivity of heavy metal ion detection can be effectively improved. Therefore, the problem that an existing optical fiber sensor is not high in sensitivity is solved. 本发明公开了一种新型光纤传感器，其中，所述新型光纤传感器包括：光纤主体以及覆盖于所述光纤主体表面的传感膜，其中，所述光纤主体包括两个对称分布的双锥结构，所述传感膜用于与重金属离子螯合。由于本发明中的新型光纤传感器包括两个对称分布的双锥结构，可以激发更多的高阶包层膜，增加了环境的响应，因此可以有效提高重金属离子检测的灵敏度。从而解决了现有的光纤传感器灵敏度不高的问题。