Noise analysis of the fiber-based vibration detection system
| Autor: | Guan Wang, Haiqing Hao, Bohan Zhang, Zhongwang Pang, Bo Wang, Hongwei Si |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Optical fiber cable
business.industry Computer science Acoustics Ambient noise level 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics Vibration Background noise Interferometry Noise Optics law Fiber optic sensor Fiber laser 0103 physical sciences 0210 nano-technology business |
| Zdroj: | Optics express. 29(4) |
| ISSN: | 1094-4087 |
| Popis: | Detecting seismic events using a fiber-based CW laser interferometer attracts wide attention. To make the detection more effective, we analyze the system’s noise level by setting up two vibration detection systems. By changing the fiber length (0∼100 km) and laser noise level, respectively, we detect the minor phase change caused by a 160 µm-fiber-length vibration. Furthermore, we use three indicators, Power Spectral Density, Background Noise Level, and Signal-to-Noise Ratio to analyze the noise level of the whole system. The relation between the system’s background noise and corresponding detection result is carried out. This quantitative research can serve as a reference and help people to realize the most efficient vibration detection system. |
| Databáze: | OpenAIRE |
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