Embedded progressive-three-layered fiber long-period gratings for respiratory monitoring

J Biomed Opt. 2003 Jul;8(3):552-8. doi: 10.1117/1.1578497.


A long-period grating (LPG) was written into a progressive three-layered single-mode fiber that was embedded into a flexible platform as a curvature sensor. The spectral location and profile of the LPGs were unaltered after implantation in the platform. The curvature sensitivity was 3.747 nm m with a resolution of +/-1.1 x 10(-2) m(-1). The bend sensor is intended to be part of a respiratory monitoring system and was tested on a resuscitation training manikin.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Elasticity
  • Equipment Design
  • Equipment Failure Analysis*
  • Fiber Optic Technology / instrumentation*
  • Fiber Optic Technology / methods
  • Respiratory Function Tests / instrumentation*
  • Respiratory Function Tests / methods
  • Respiratory Mechanics / physiology*
  • Spirometry / instrumentation
  • Spirometry / methods
  • Stress, Mechanical
  • Transducers*