Chinese Optics Letters, 2012, 10 (5): 050501, Published Online: Mar. 5, 2012
Comparative study of f iber optic liquid level sensors based on long-period f iber gratings with dif ferent doping concentrations Download: 589次
Abstract
The performances of two liquid level sensors based on long-period fiber gratings are studied. The long-period gratings (LPGs) have similar characteristics (length and period), but are fabricated with two photosensitive B-Ge co-doped fibers with different dopant concentrations. We investigate the temperature sensitivities of LPGs and exploit their refractive index sensitivity to implement liquid level measurement. By controlling fiber parameters, such as the dopant concentrations, the measurement sensitivity of a LPG-based fiber optic liquid level sensor can be improved.
Barerem-Melgueba Mao, Yizhen Wei, Bin Zhou. Comparative study of f iber optic liquid level sensors based on long-period f iber gratings with dif ferent doping concentrations[J]. Chinese Optics Letters, 2012, 10(5): 050501.