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Optical Engineering

Coherence multiplexing of in-line displacement and temperature sensors
Author(s): Daniele Inaudi
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Paper Abstract

A novel in-line multiplexing scheme for optical displacement and temperature sensors based on low-coherence interferometry is presented. It allows the measurement of deformations with a resolution of 10 μm and temperatures with a resolution of 1°C m. The multiplexing of two displacement sensors and one temperature sensor along the same fiber line is demonstrated experimentally, and a theoretical calculation for a system with 10 sensors is presented. This type of sensor would be especially useful for the long-time monitoring of large structures.

Paper Details

Date Published: 1 July 1995
PDF: 4 pages
Opt. Eng. 34(7) doi: 10.1117/12.200603
Published in: Optical Engineering Volume 34, Issue 7
Show Author Affiliations
Daniele Inaudi, Swiss Federal Institute of Technology (Switzerland)

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