| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 463302 | Optical Fiber Technology | 2016 | 6 Pages |
•A fiber-optic accelerometer for measurement of vibration acceleration is proposed.•It has the advantages of simple structure, low cost and easy demodulation.•The bandwidth and the sensitivity are 4700 Hz and 21.24 mV/g respectively.•The coefficient of determination is better than 0.999.
A fiber-optic accelerometer with simple structure and high performance based on intensity modulation is proposed. Using only a length of single mode fiber compressed by a cantilever, the intensity of reflected light is modulated by the vibration acceleration applied to it. The effects of the fiber location, the dimension parameters of the cantilever on frequency response and sensitivity are investigated. The experimental results demonstrate that the accelerometer has a flat frequency response over a 4700 Hz bandwidth and a sensitivity of 21.24 mV/g with a cantilever dimension of 30 × 8 × 1.6 mm3 and a distance of 5 mm between the fiber location and the suspended cantilever end; the coefficient of determination is better than 0.999. In addition, the effect of temperature and the stability of the sensing system are investigated.
