Abstract
We report on a novel experimental setup for distributed measurement of temperature, based on spontaneous Brillouin scattering in optical fiber. We have developed a mode-locked Brillouin fiber ring laser in order to generate the dual frequency source required for a heterodyne detection of the backscattered signal. This relatively simple system enables temperature measurements over 20 km with a spatial resolution of 7 m.
| Original language | English |
|---|---|
| Pages (from-to) | 1367-1369 |
| Number of pages | 3 |
| Journal | IEEE Photonics Technology Letters |
| Volume | 12 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 2000 |
Keywords
- Brillouin scattering
- fiber lasers
- frequency
- laser mode locking
- optical fiber sensors
- optical fibers
- ring lasers
- signal generators
- temperature sensors
- acousto-optical modulation
- distributed sensors
- fibre lasers
- fibre optic sensors
- heterodyne detection
- optical fibre testing
- stimulated Brillouin scattering
- 20 km
- backscattered signal
- distributed temperature measurement
- distributed temperature sensor
- dual frequency source
- mode-locked Brillouin fiber ring laser
- optical fiber testing
- spatial resolution
- spontaneous Brillouin scattering
- temperature measurements