Abstract
The signals between cascaded Fabry-Perot sensors have serious cross-talk problems due to complex phase interactions between sensors. However, cross-talk mode in cascaded Fabry-Perot sensors can be employed for demodulating optically differential-phase in a path-matching differential interferometry (PMDI). This paper presents a novel design in two series Fabry-Perot sensors for a differential-phase measurement analyzed by an optical spectrum analysis. The spectrum transfer function in a light source and Fabry-Perot cavities are simulated by a Gaussian distribution spectrum and a low-finesse reflectivity, respectively. It shows that two series Fabry-Perot sensors with the differential-phase measurement can be designed accurately. Experimental data shows that the novel design in measuring a differential-phase between two series Fabry-Perot sensors is achieved. This design in two series Fabry-Perot sensors for a differential-phase measurement can be applied to unbalanced system detection or noise compensations.
| Original language | English |
|---|---|
| Pages (from-to) | 552-556 |
| Number of pages | 5 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3897 |
| Publication status | Published - 1999 |
| Event | Proceedings of the 1999 Advanced Photonic Sensors and Applications - Singapore, Singapore Duration: 1999 Nov 30 → 1999 Dec 3 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering