Abstract
A distributed optical-fiber stress sensor whose principle of operation is based on the frequencymodulation continuous-wave technique is reported. The sensor consists of a length of birefringent fiber with a mirror attached to one end, a diode laser, and a p–i–n photodiode detector. The intensity and the location of an applied stress are determined simultaneously by detecting the amplitude and the frequency of the beat signal, which is produced by two forward-coupled mode beams. The system was found to have a reasonable spatial resolution of 0.85 m (rms error) in a sensing range of 100 m. The advantages and limitations of the sensor are also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 5722-5726 |
| Number of pages | 5 |
| Journal | Applied Optics |
| Volume | 35 |
| Issue number | 28 |
| DOIs | |
| Publication status | Published - 1 Oct 1996 |
Keywords
- Distributed sensor
- Frequency modulation continuous wave
- Optical-fiber sensor
- Stress measurement
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering