Fiber optic temperature sensor based on image processing of intermodal interference pattern

@article{Musin2014FiberOT,
  title={Fiber optic temperature sensor based on image processing of intermodal interference pattern},
  author={Fr{\'e}d{\'e}ric Musin and Patrice M{\'e}gret and Marc Wuilpart},
  journal={IEEE SENSORS 2014 Proceedings},
  year={2014},
  pages={1519-1522}
}
Few-mode interference patterns produced by a fiber optic are composed of lobes whose intensity and displacement in the fiber cross-section are dependent on external disturbances like temperature and strain. This paper presents an image processing algorithm which computes the lobes coordinates and records their trajectory with respect to time. It is then numerically and experimentally demonstrated that the trajectory length of path is proportional to the temperature integrated all along the… CONTINUE READING