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Proceedings Paper

A novel density sensor based on high-birefringence fiber loop mirror
Author(s): Dongmei Bai; Shuyang Hu; Tiancong Xu; Chuan He
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Paper Abstract

In this paper, a novel density sensor based on high-birefringence fiber loop mirror is proposed and studied. The high-birefringence fiber is pasted to a ring shaped rubber gasbag and placed in the liquid. Fasten the gasbag to the bottom of the container. When the density of liquid is changed, the liquid level keeps the same. The change of the pressure outside the gasbag leads to the variation of the volume of the air in the gasbag. Eventually, the strain of high-birefringence fiber varies with the variation of the volume of the air and the transmittance of high-birefringence fiber loop mirror shifts with the density change. The experimental result indicates that the shifts of wavelengths are in good linear relationship with the density of liquid. The experiment shows that the sensitivity is 8.024nm/(kg/m3). The novel density sensor has the advantages such as high sensitivity, polarization independent, low cost and good repeatability.

Paper Details

Date Published: 29 August 2013
PDF: 6 pages
Proc. SPIE 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography, 89140G (29 August 2013); doi: 10.1117/12.2033164
Show Author Affiliations
Dongmei Bai, Beijing Univ. of Technology (China)
Shuyang Hu, Beijing Univ. of Technology (China)
Tiancong Xu, Beijing Univ. of Technology (China)
Chuan He, Beijing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 8914:
International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography
Yunjiang Rao, Editor(s)

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