title: Two-dimensional bending vector sensing based on spatial cascaded orthogonal long period fiber.
abstract: A novel bending vector sensor based on spatial cascaded orthogonal long period fiber gratings (SCO-LPFGs) written by high-frequency CO(2) laser pulses has been proposed, and two-dimensional bending vector sensing characteristics based on the simple SCO-LPFGs have been experimentally demonstrated. A three-dimensional orthogonal sensing coordinate system has been established, and the measurement results of the proposed SCO-LPFGs sensor based on the above coordinate system is given, and furthermore both of curvature and bending-direction could be intuitively solved according to the three-dimensional orthogonal sensing coordinates. The research work presented in this paper would be helpful to improve the practicability of fiber vector sensors due to the distinguished characteristics such as simple structure, low-cost, ease of fabrication.
authors.affiliation: Key Laboratory of Optical Information Science and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China.
authors.forename: Pengcheng
authors.initials: P
authors.lastname: Geng
authors.forename: Weigang
authors.initials: W
authors.lastname: Zhang
authors.forename: Shecheng
authors.initials: S
authors.lastname: Gao
authors.forename: Hao
authors.initials: H
authors.lastname: Zhang
authors.forename: Jieliang
authors.initials: J
authors.lastname: Li
authors.forename: Shanshan
authors.initials: S
authors.lastname: Zhang
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Bai
authors.forename: Li
authors.initials: L
authors.lastname: Wang
mesh_terms: D055119:Elastic Modulus; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D012031:Refractometry / Q000295:instrumentation*; D014159:Transducers