Optically differential phase detection using cross-talk mode of series Fabry-Perot sensors in PMDI

Yu Lung Lo, Chun Han Wang

研究成果: Conference article同行評審

摘要

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.

原文English
頁(從 - 到)552-556
頁數5
期刊Proceedings of SPIE - The International Society for Optical Engineering
3897
出版狀態Published - 1999 十二月 1
事件Proceedings of the 1999 Advanced Photonic Sensors and Applications - Singapore, Singapore
持續時間: 1999 十一月 301999 十二月 3

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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