Proceedings | |
Etched and Nanocoated SMS Fiber Sensor for Detection of Salinity Concentration | |
Cardona-Maya, Y.1  | |
关键词: etching; optic fibre sensor; refractive index; single-modeâmultimodeâsingle-mode (SMS); thin-films; salinity; | |
DOI : 10.3390/proceedings1040333 | |
学科分类:社会科学、人文和艺术(综合) | |
来源: mdpi | |
【 摘 要 】
An optical fibre refractometer has been developed by etching and deposition of a thin film of indium tin oxide (ITO) on a single-mode-multimode-single-mode (SMS) fibre structure. The interference between modes in this structure is sensitive to the refractive index changes of the surrounding medium, achieving sensitivities of up to 7000 nm/RIU in the 1.333â1.338 RIU range. A salinity sensor has been implemented as a practical application of this proposed structure. Fast Fourier transform (FFT) analysis and tracking of an interference dip were used to monitor the interference between modes obtaining sensitivities of 0.99 nm/PSU and 0.025 rad/PSU, respectively.
【 授权许可】
CC BY
【 预 览 】
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RO201902027243208ZK.pdf | 856KB | download |