Abstract
A new Michelson interferometer based on fiber Bragg grating (FBG) is demonstrated. FBGs are used as reflectors, and the laser is replaced by a broadband source as input light in this interferometer. To demodulate the signals, a 3 × 3 coupler is used as a splitter. By combining with software demodulation, the outer interference can be obtained from the outputs of the interferometer. This kind of interferometer can also be wavelength-multiplexed easily by composing a series Michelson interferometer. The experiment results show that the clear interference fringe can be obtained by adjusting the path difference to make it less than interference length of FBG. The signals are also demodulated.
| Original language | English |
|---|---|
| Pages (from-to) | 448-450 |
| Number of pages | 3 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 15 |
| Issue number | 4 |
| Publication status | Published - Dec 2006 |
Keywords
- 3 × 3 coupler
- Fiber Bragg grating
- Michelson interferometer