A hybrid fabry-perot/Michelson interferometer sensor using a dual asymmetric core microstructured fiber

O. Frazão, S. F. Silva, J. Viegas, J. M. Baptista, J. L. Santos, P. Roy

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

A hybrid Fabry-Perot/Michelson interferometer sensor using a dual asymmetric core microstructured fiber is demonstrated. The hybrid interferometer presents three waves. Two parallel Fabry-Perot cavities with low finesse are formed between the splice region and the end of a dual-core microstructured fiber. A Michelson configuration is obtained by the two small cores of the microstructured fiber. The spectral response of the hybrid interferometer presents two pattern fringes with different frequencies due to the respective optical path interferometers. The hybrid interferometer was characterized in strain and temperature presenting different sensitivity coefficients for each topology. Due to these characteristics, this novel sensing head is able to measure strain and temperature, simultaneously.

Original languageBritish English
Article number025205
JournalMeasurement Science and Technology
Volume21
Issue number2
DOIs
StatePublished - 2010

Keywords

  • Fabry-Perot interferometer
  • Michelson interferometer
  • Simultaneous measurement of strain and temperature

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