Simultaneous measurement of two strain components using passive demodulation

Y. L. Lo, J. S. Sirkis

Research output: Contribution to journalConference article


This paper uses 3×3 coupler passive demodulation of combined Michelson and polarimetric optical fiber sensors to simultaneously measure axial and transverse strain components in a single optical fiber bonded to a vibrating cantilever beam. The separated Michelson and polarimetric signals are used with isothermal Michelson and polarimetric phase strain-models to provide two independent equations describing the strain in the fiber. These equations provide enough information to calculate axial and transverse strains in surface mounted sensors.

Original languageEnglish
Pages (from-to)67-77
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1994 May 1
EventSmart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation - Orlando, United States
Duration: 1994 Feb 131994 Feb 18

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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