Welding-packaged accelerometer based on metal-coated FBG

• 作 者: 郭永兴 张东生 周祖德 熊丽 邓希望
• 机 构: National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology,K
• 出 处: Chinese Optics Letters
• 发表日期: 2013年07期
• 关键词: accelerometer coated Bragg grating sputtering bandwidth Welding optic successive

A fiber Bragg grating-based accelerometer with a fully metalized package is presented. Magnetron sputtering and electroplating techneques are successively adopted to metalize bare SiO 2 fiber with a single Bragg grating. Laser welding techneque is adopted to fix the metal-coated fiber on the sensor component to obtain a fully metallized package without adhesives. Vibration test results demonstrate that the accelerometer has a flat frequency response over a 1-kHz bandwidth, with a resonance frequency of 3.6 kHz, wide linear measurement range of up to 8 g, and sensitivity of 1.7 pm/g .

A fiber Bragg grating-based accelerometer with a fully metalized package is presented. Magnetron sputtering and electroplating techneques are consistently adopted to metalize bare SiO 2 fiber with a single Bragg grating. Laser welding techneque is adopted to fix the metal-coated fiber on the sensor Vibration test results demonstrate that the accelerometer has a flat frequency response over a 1-kHz bandwidth, with a resonance frequency of 3.6 kHz, a wide linear measurement range of up to 8 g, and sensitivity of 1.7 pm / g.