Pressure and temperature characterization of two interferometric configurations based on suspended-core fibers |
| |
| Authors: | SH Aref MI Zibaii M Kheiri H Porbeyram H Latifi FM Araújo LA Ferreira JL Santos J Kobelke K Schuster O Frazão |
| |
| Institution: | 1. INESC Porto – Instituto de Engenharia de Sistemas e Computadores do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal;2. Department of Physics, University of Qom, 3716146611 Qom, Iran;3. Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran;4. Departamento de Física da Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal;5. IPHT – Institute of Photonic Technology, D-07745 Jena, Germany;1. Xi’an Shiyou University, School of Science, Shaanxi Engineering Research Center of Oil and Gas Resource, Optical Fiber Detection, Dianzi 2nd Road No.18, Xi’an, Shaanxi, 710065, China;2. Xi’an Shiyou University, Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells, Dianzi 2nd Road No.18, Xi’an, Shaanxi, 710065, China;1. The Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin, 150080, China;2. College of Science, Harbin University of Science and Technology, Harbin, 150080, China |
| |
| Abstract: | In this work, two all-fiber interferometric configurations based on suspended core fibers (SCF) are investigated. A Fabry–Pérot cavity (FPC) made of SCF spliced in-between segments of single-mode and hollow-core fiber is proposed. The interferometric signals are generated by the refractive-index mismatches between the two fibers in the splice region and at the end of the suspended-core fiber. An alternative sensing head configuration formed by the insertion of a length of SCF as a birefringence element in a Sagnac loop interferometer is also demonstrated. In this structure, the interferometric signals are generated by interfering two counter propagating beams with different polarization states which propagate through a length of SCF as a birefringence element. The sensitivity to pressure and temperature was determined for both configurations. The results show that the pressure sensitivities are ? 4.68 × 10? 5 nm/psi and 0.032 nm/psi for FPC and Sagnac loop interferometers, respectively. The temperature sensitivity of both structures has been obtained and the results have been discussed. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
