Optical fiber multiplexing interferometer system with a single laser diode and its application to online displacement measurement

Fang Xie*, Yi Lu, Lin Zhang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

A multiplexed optical fiber Michelson interferometer system that is self-referenced with a stabilizing feedback loop is presented. This system employs fiber Bragg gratings and wavelength division multiplexing technique to combine two optical fiber interferometers that share the same optical path in the main part of the optical system. When one Michelson interferometer, which uses the fiber Bragg gratings as reflective mirrors and is used as reference interferometer, is stabilized by an electric feedback loop, the other interferometer, which is used for the measurement, is also stabilized. This system is therefore suitable for online precision measurement. An active phase-tracking technique is applied for signal processing to achieve high resolution.

Original languageEnglish
Article number051011
Pages (from-to)051011-1 - 051011-5
Number of pages5
JournalOptical Engineering
Volume46
Issue number5
DOIs
Publication statusPublished - 22 May 2007

Bibliographical note

Copyright 2007 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

  • Displacement
  • Fiber optics
  • Interferometry
  • Measurement
  • Metrology

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