Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7123434 | Measurement | 2016 | 7 Pages |
Abstract
The pore water pressure sensors with the six-hole suspended-core polarization-maintaining photonic crystal fiber (SC-PM-PCF) and commercial polarization-maintaining photonic crystal fiber (PM-PCF) are designed based Sagnac interferometer and calibrated in the laboratory. According to the theoretical analysis and calibration results, the transmission spectrum is very sensitive to the pore water pressure. It is found that the wavelength of the spectrum has a good linear relationship with variances of the surrounding pore water pressure, and the coefficient of wavelength-pressure of the commercial PM-PCF is 304.41Â kPa/nm with the length of 35Â cm as the sensing element while the coefficient of the SC-PM-PCF is 254.75Â kPa/nm with the length of 100Â cm. Finally, the two PM-PCF sensors are applied and compared with the conventional Pore water Pressure Transducers (PPTs) in a physical model test. It is found that measurements of the PM-PCF sensors are in good agreement with the results measured by the conventional PPTs.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Control and Systems Engineering
Authors
Wei-Qiang Feng, Zheng-Yong Liu, Hwa-Yaw Tam, Jian-Hua Yin,