title: Gas Raman sensing with multi-opened-up suspended core fiber.
abstract: Gas sensing and fluid-guiding response properties of a suspended core fiber Raman analyzer with side-opened and strut microfluid-guiding array are explored. A Raman sensing model is introduced for effective mode area optimization and normalized intensity overlap enhancement between Raman sensing light and analyte. Calculations predict that there is a trade-off between the overlap and the effective mode area, while the optimal trade-off depends on the refractive index of the background material, core diameter, and strut's thickness. Furthermore, the multi-opened-up structure ensures a fast gases diffusing into/out of each hole for real-time Raman sensing. Simulation results confirm a limited gas sensing response time of less than 6 s could be feasible and, thus, a new approach to real-time gas sensing applications is identified.
authors.affiliation: School of Electronic and Information Engineering, Beihang University, 37 Xueyuan Rd., Beijing, 100191, China.
authors.forename: Guanjun
authors.initials: G
authors.lastname: Wang
authors.forename: Jiansheng
authors.initials: J
authors.lastname: Liu
authors.forename: Yi
authors.initials: Y
authors.lastname: Yang
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zheng
authors.forename: Jing
authors.initials: J
authors.lastname: Xiao
authors.forename: Ruichao
authors.initials: R
authors.lastname: Li