High sensitivity fiber optic strain sensor based on CFBG-FPI and vernier effect

A high-sensitivity fiber optic strain sensor based on chirped fiber Bragg grating-Fabry Perot interferometer (CFBG-FPI) and vernier effect is proposed and has been demonstrated to have a strain sensitivity of -123.8 pm/μϵ. With femtosecond laser direct writing technology, two pairs of CFBGs with the...

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Veröffentlicht in:	Journal of lightwave technology 2023-11, Vol.41 (21), p.1-8
Hauptverfasser:	Pan, Xue-Peng, Yang, He-Er, Liu, Shan-Ren, Wang, Bo, Gao, Meng-Meng, Guo, Qi, Chen, Qi-Dai, Bo Sun, Hong, Yu, Yong-Sen
Format:	Artikel
Sprache:	eng
Schlagworte:	Bragg gratings Chirped fiber Bragg grating Direct laser writing Fabry Perot interferometer Femtosecond laser Fiber optic strain sensor Fiber optics Interferometers Low temperature Optical device fabrication Optical fiber sensors Optical interferometry Sensitivity Sensors Strain Strain measurement Ultrafast optics Vernier effect
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