A J1̃J6 method for linear readout of dynamic phase changes in homodyne interferometric optical fibre sensors

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Abstract

We report a J1̃J6 method for linear readout of dynamic phase changes in a fibre optic homodyne interferometer. The method uses either three odd harmonics or three even harmonics to recover the amplitude of a harmonically varying dynamic phase modulation. The method overcomes the drawbacks presented in the J1̃J4 method and does hot require repeating of measurement even when the random phase bias is mπ/2(m = 0,1,2⋯).
Original languageEnglish
Pages (from-to)1091-1096
Number of pages6
JournalGuangzi Xuebao/Acta Photonica Sinica
Volume26
Issue number12
Publication statusPublished - 1 Dec 1997

Keywords

  • Fibre optic sensors
  • Homodyne
  • Optical interferometers
  • Phase shift

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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