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

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Aref, SH (Author) Other; Zibaii, MI (Author) Other; Kheiri, M (Author) Other; Porbeyram, H (Author) Other; Latifi, H (Author) Other; Araujo, FM (Author) Other; Ferreira, LA (Author) Other; Santos, JL (Author) FCUP; Kobelke, J (Author) Other; Schuster, K (Author) Other; Frazao, O (Author) FCUP

Journal

Title: Optics Communications

Vol. 285

Pages: 269-273

ISSN: 0030-4018

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 17 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-002-DR7

DOI: 10.1016/j.optcom.2011.09.040

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific