Novel optical vibration sensor using external cavity feedback: Novel optical vibration sensor using external cavity feedback

Christine Mignosi, M. Bordovsky, Chris N. Morgan, I. H. White, Roger P. Griffiths, Nick A.J. Lieven

Research output: Contribution to journalArticle


A novel low cost, non-contact optical vibration sensor requiring only a single optoelectronic component has been developed. It consists of a continuous wave semiconductor laser operating with external optical feedback. Vibrations have been measured at frequencies of up to 600 Hz with target reflectivities lower than 5%. When calibrated, the sensor demonstrates satisfactory output for submicron vibration amplitudes. Accuracies of 0.2% have been obtained over a range of 1mm.

Original languageEnglish
Pages (from-to)71-81
Number of pages11
JournalFiber and Integrated Optics
Issue number1
Publication statusPublished - 1 Jan 2001


  • External optical feedback
  • Optical sensors
  • Vibration measurements

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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