Abstract
A fiber laser-based wavelength division multiplexed sensor system with five fiber bragg grating sensor array as reflector of a ring-cavity fiber laser has been demonstrated experimently. A tunable F-P filter inside the cavity was used to interrogate the sensors and establish the laser formation. Wavelength-shift signal induced by the measured strain was demodulated by an unbalanced Michelson scanning interferometer. The sensitivity of the system was demonstrated to be 1.669°/με which was in agreement with the theoretical value of 1.678°/με well. The system was also designed to track one of the channels automatically with a feedback subsystem.
| Original language | Chinese (Simplified) |
|---|---|
| Pages (from-to) | 592-595 |
| Number of pages | 4 |
| Journal | Guangxue Xuebao/Acta Optica Sinica |
| Volume | 22 |
| Issue number | 5 |
| Publication status | Published - 1 May 2002 |
Keywords
- Active sensor
- F-P filtering
- Fiber bragg grating
- Interferometric demodulation
- Ring-cavity fiber laser
- Sensing system
- Wavelength division multiplexing
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics