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Optical Engineering

Optical fiber-based liquid level sensor
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Paper Abstract

A liquid level sensor based on etched D-shaped silica optical fibers is presented. The optical transmission of the sensor depends on the liquid level. The sensor can be realized as a continuous level sensor with a high resolution and requires only one fiber and one optical source and detector. We have demonstrated a sensor with a resolution of ~1 mm. The sensor works for liquids with refractive indices greater than ~1.45. We show that the sensor response is the same for increasing and decreasing liquid levels.

Paper Details

Date Published: 1 November 2007
PDF: 7 pages
Opt. Eng. 46(11) 114401 doi: 10.1117/1.2801506
Published in: Optical Engineering Volume 46, Issue 11
Show Author Affiliations
Sameer M. Chandani, The Univ. of British Columbia (Canada)
Nicolas A. F. Jaeger, The Univ. of British Columbia (Canada)

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