Share Email Print
cover

Proceedings Paper

Highly sensitive liquid level sensor based on fiber core-offset attenuation
Author(s): Ting-ting Wang; Ming Wang
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

An all-fiber liquid level sensor based on core-offset attenuator is proposed and demonstrated. The interference fringe is affected by the fraction of the length of the interferometeric arm that is surrounded by the liquid. The experiments show that for a liquid level variation of 30mm, the maximum difference of attenuation changes about 3dB. Also in the linear region, a sensitivity of 0.84dB/mm is achieved. For a temperature range from 30°C to 80°C, the measured liquid level fluctuates less than 1% without any temperature compensation. The liquid level sensor we reported in this paper appears more robust and repeatable, and its ease of fabrication makes it a low cost alternative to existing fiber liquid level sensor.

Paper Details

Date Published: 23 November 2009
PDF: 6 pages
Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 750806 (23 November 2009); doi: 10.1117/12.837740
Show Author Affiliations
Ting-ting Wang, Nanjing Normal Univ. (China)
Nanjing Univ. of Information Science & Technology (China)
Ming Wang, Nanjing Normal Univ. (China)


Published in SPIE Proceedings Vol. 7508:
2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
YanBiao Liao; Anbo Wang; Tingyun Wang; Yukihiro Ishii, Editor(s)

© SPIE. Terms of Use
Back to Top