Femtosecond Laser Line-by-Line Inscribed Seven Core Fiber Cascaded Fabry–Perot Cavity and Its Vectorial Bending Sensing Application

• Published in: Photonics Vol. 10; no. 6; p. 605
• Main Authors: Zhang, Yanqing, Ma, Haili, Yao, Yicun, Wang, Minghong, Zhang, Liqiang, Nie, Zhaogang, Bai, Chenglin
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.06.2023
• Subjects: Bragg gratings; Electric fields; Fabrication; Fabry-Perot interferometers; Fabry–Perot (F–P); femtosecond laser; Fiber optics; Fibers; Holes; Inscriptions; Lasers; Reproducibility; SCF; Sensitivity; Sensors; vector bending; Vectors (mathematics)

Multi-core fibers have been widely used for vector-bending sensing due to their off-axis distributed cores. In contrast to vector-bending sensors based on Bragg gratings, fiber Fabry–Perot (F–P) interferometers are more advantageous due to their ease of fabrication and potential for introducing the...