Abstract
For several years, Brillouin-based optical fiber sensors plays an important roles in the fields of distributed temperature and strain measurements in the real world. Among these sensors, the optical chirp chain (OCC) based Brillouin optical fiber sensor is a good candidate to realize ultrafast distributed sensing, which is of great importance to distinguish quick-changing events in practical applications. In this paper, the principle of OCC and the OCC based Brillouin optical time-domain analysis (BOTDA) sensing are introduced. In OCC-BOTDA, there are three types of spectral distortions, i.e. the back end distortion, the frequency lag of main peak and the frequency saltation distortion, which are influenced by the transient stimulated Brillouin scattering, are verified in the simulation and experiment in this paper and attributed to the rapid frequency sweeping.
| Original language | English |
|---|---|
| Title of host publication | First Optics Frontier Conference |
| Editors | Shining Zhu, Tiejun Cui, Xiangang Luo, Long Zhang |
| Publisher | SPIE |
| ISBN (Electronic) | 9781510645448 |
| DOIs | |
| State | Published - 2021 |
| Externally published | Yes |
| Event | 1st Optics Frontier Conference 2021 - Hangzhou, China Duration: 24 Apr 2021 → 26 Apr 2021 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 11850 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 1996-756X |
Conference
| Conference | 1st Optics Frontier Conference 2021 |
|---|---|
| Country/Territory | China |
| City | Hangzhou |
| Period | 24/04/21 → 26/04/21 |
Bibliographical note
Publisher Copyright:© 2021 SPIE.
Keywords
- Brillouin fiber optical sensing
- Brillouin optical time domain analysis
- Optical chirp chain
- Transient stimulated Brillouin effect