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Optical Engineering

Optical fiber multiplexing interferometer system with a single laser diode and its application to online displacement measurement
Author(s): Fang Xie; Yi Lu; Lin Zhang
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Paper 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.

Paper Details

Date Published: 1 May 2007
PDF: 5 pages
Opt. Eng. 46(5) 051011 doi: 10.1117/1.2738723
Published in: Optical Engineering Volume 46, Issue 5
Show Author Affiliations
Fang Xie, Beijing Jiaotong Univ. (China)
Yi Lu, Beijing Jiaotong Univ. (China)
Lin Zhang, Aston Univ. (United Kingdom)

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