
Proceedings Paper
Dopants concentration effects on the wavelength shift of long-period fiber gratings used as liquid level detectorsFormat | Member Price | Non-Member Price |
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Paper Abstract
Two liquid level sensors based on different long-period fiber gratings are proposed and compared. The long-period
gratings have the same characteristics (length, grating period) but are fabricated in different optical fibers (photosensitive
B-Ge codoped optical fibers with different dopants concentrations). The principle of this type of sensor is based on the
refractive index sensitivity of long-period fiber gratings. By monitoring the resonant wavelength shifts of a given
attenuation band, one can measure the immersed lengths of long-period fiber gratings and then the liquid level. The
levels of two different solutions are measured. The maximum shift (7.69 nm) of the investigated resonance wavelength
was observed in LPG1 (fabricated in Fibercore PS1250/1500). By controlling the fiber dopants concentrations one can
improve the readouts of a fiber-optic liquid level sensor based on long-period fiber gratings.
Paper Details
Date Published: 29 November 2011
PDF: 6 pages
Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83070W (29 November 2011); doi: 10.1117/12.904611
Published in SPIE Proceedings Vol. 8307:
Passive Components and Fiber-Based Devices VIII
Bishnu P. Pal, Editor(s)
PDF: 6 pages
Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83070W (29 November 2011); doi: 10.1117/12.904611
Show Author Affiliations
Barerem-Melgueba Mao, Zhejiang Univ. (China)
Bin Zhou, Zhejiang Univ. (China)
Published in SPIE Proceedings Vol. 8307:
Passive Components and Fiber-Based Devices VIII
Bishnu P. Pal, Editor(s)
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