Abstract
A spatial/wavelength-division multiplexed 3×10 fiber Bragg grating sensor array, acted as the reflector of a ring-cavity fiber laser, was interrogated by employing a 1×3 optical switch and a tunable F-P filter. Demodulation was achieved by using an unbalanced Michelson scanning interferometer that transform the wavelength-shift signal induced by the measured strain into phase-shift signal. The sensor sensitivity of the system was demonstrated to be 1.6817 Deg/με, which agrees with the theoretical value of 1.6843 Deg/με well. A feedback subsystem was introduced to make the system track the measuring channel automatically.
| Original language | English |
|---|---|
| Pages (from-to) | 131-134 |
| Number of pages | 4 |
| Journal | Zhongguo Jiguang/Chinese Journal of Lasers |
| Volume | 29 |
| Issue number | 2 |
| Publication status | Published - 1 Feb 2002 |
| Externally published | Yes |
Keywords
- Active sensor
- F-P filtering
- Fiber Bragg grating
- Interferometric demodulation
- Ring-cavity fiber laser
- Sensor network
- Spatial-division multiplexing
- Wavelength-division multiplexing
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering