Infrared and Laser Engineering, Volume. 53, Issue 7, 20240132(2024)
Wide-band high-sensitivity fiber Bragg grating vibration sensor based with hinged complementary structure
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Fig. 3. The first two orders of the sensor's mode vibration pattern. (a) First-order modal shapes; (b) Second-order modal shapes
Fig. 5. Combination sensitivity frequency response curve simulation
Fig. 7. Flow chart for packaging sensor. (a) Double hinge assembly; (b) Encapsulation; (c) Outer cover mounting
Table 1. Sensor parameter table
View tableView in ArticleTable 1. Sensor parameter table
Parameter Parameter name Parameter value $ {l_f} $ Length of fiber Bragg grating/mm 1 $ {E_f} $ Modulus of elasticity of fiber/GPa 72.1 $ {A_f} $ Cross-sectional area of fiber/mm2 1.96×10−3 $ {R_1} $ Radius of hinge 1/mm 2.5 $ {R_2} $ Radius of hinge 2/mm 3 $ t $ Thickness of hinges/mm 0.5 $ \omega $ Width of hinges/mm 28 $ {b_1} $ Length of mass block 1/mm 41 $ {b_2} $ Length of mass block 2/mm 40
Table 2. Main material properties of the sensor
View tableView in ArticleTable 2. Main material properties of the sensor
Materials Density/kg·m−3 Young's modulus/GPa Poisson's ratio Brass 8700 90 0.324 Fiber 2201 72.1 0.179
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Zhongze XIAN, Jingtao XIN, Qihui LI, Xiang TANG, Mingli DONG. Wide-band high-sensitivity fiber Bragg grating vibration sensor based with hinged complementary structure[J]. Infrared and Laser Engineering, 2024, 53(7): 20240132
Paper Information
Category: Optical communication and sensing
Received: Mar. 24, 2024
Accepted: May. 9, 2024
Published Online: Aug. 9, 2024
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