Fabry-Perot Cavity Based on Hollow-Core Ring Photonic Crystal Fiber for Pressure Sensing

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

Authors

Marta S Ferreira (Author) Other; Joerg Bierlich (Author) Other; Lehmann, H (Author) Other; Kay Schuster (Author) Other; Jens Kobelke (Author) Other; Jose Luis Santos (Author) FCUP; Orlando Frazao (Author) FCUP

Journal

Title: IEEE Photonics Technology Letters

Vol. 24

Pages: 2122-2124

ISSN: 1041-1135

Publisher: IEEE

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 15 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-002-2XD

DOI: 10.1109/lpt.2012.2222368

Abstract (EN): An interferometric Fabry-Perot cavity based on hollow-core ring photonic crystal fiber (HCR-PCF) for pressure sensing is proposed. The sensing head is formed by splicing a small section of HCR-PCF to standard single mode fiber. The spectral response depends on the cavity length due to the geometry of the HCR-PCF. The sensing head is subjected to methane pressure variations, where it exhibits a sensitivity of 0.82 nm/MPa. Its response to nitrogen pressure variation is also studied. The sensing head's intrinsic sensitivity to the nitrogen refractive index variations inside the hollow-core is also estimated. Finally, temperature measurement is performed and a sensitivity of 3.77 pm/degrees C is obtained for temperatures below 200 degrees C.

Language: English

Type (Professor's evaluation): Scientific