Pressure and temperature characterization of two interferometric configurations based on suspended-core fibers

被引：12

作者：

Aref, S. H. ^{[1
,2
,3
]}

Zibaii, M. I. ^{[1
]}

Kheiri, M. ^{[1
]}

Porbeyram, H. ^{[1
]}

Latifi, H. ^{[1
]}

Araujo, F. M. ^{[2
]}

Ferreira, L. A. ^{[2
]}

Santos, J. L. ^{[2
,4
]}

Kobelke, J. ^{[5
]}

Schuster, K. ^{[5
]}

Frazao, O. ^{[2
]}

机构：

[1] Shahid Beheshti Univ, Laser & Plasma Res Inst, Tehran, Iran

[2] INESC Porto, P-4169007 Oporto, Portugal

[3] Univ Qom, Dept Phys, Qom 3716146611, Iran

[4] Univ Porto, Dept Fis, Fac Ciencias, P-4169007 Oporto, Portugal

[5] IPHT, D-07745 Jena, Germany

来源：

OPTICS COMMUNICATIONS | 2012年 / 285卷 / 03期

关键词：

Optical fiber sensors; Microstructured fiber; Sagnac and Fabry-Perot interferometers; PHOTONIC CRYSTAL FIBER; OPTICAL-FIBER; SENSOR; STRAIN;

D O I：

10.1016/j.optcom.2011.09.040

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work, two all-fiber interferometric configurations based on suspended core fibers (SCF) are investigated. A Fabry-Perot 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 x 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. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：269 / 273

页数：5

共 19 条

[1] An improved fiber optic pressure and temperature sensor for downhole application [J].