Tailoring surface structure and diameter of etched fiber Bragg grating for high strain sensing
Optics & Laser Technology(2023)
摘要
•Highly strain sensitive etched fiber Bragg Grating (EFBG) was prepared using the solvent etching method.•Optimization of etching temperature and HF concentration to produce EFBG with smooth surface and high mechanical properties.•Smaller fiber diameter improved strain sensitivity of EFBG.•Outstanding strain sensing performance of 52.74 pm/με with the fiber diameter of 15 μm.
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关键词
Etching temperature,Hydrofluoric acid concentration,Surface roughness,Mechanical properties,Strain sensing performance
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