Curvature sensor using a highly birefringent photonic crystal fiber with two asymmetric hole regions in a Sagnac interferometer

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Orlando Frazao (Author) Other; Jose M Baptista (Author) Other; Jose L Santos (Author) FCUP; Philippe Roy (Author) Other

Journal

Title: Applied Optics

Vol. 47

Pages: 2520-2523

ISSN: 1559-128X

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 70 Citations

Scopus - 76 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-003-ZGY

DOI: 10.1364/ao.47.002520

Abstract (EN): A curvature sensor based on a highly birefringent (Hi-Bi) photonic crystal fiber inserted into a Sagnac interferometer is demonstrated. For this purpose, a novel Hi-Bi photonic crystal fiber was designed and fabricated. Half of the microstructured region of the photonic crystal fiber was composed by large diameter holes, while the other half contained small diameter holes. Because of this geometry, the fiber core was shifted from the center and high birefringence appears in the optical fiber. Curvature was applied for three different fiber directions for a range of 0.6-5 m(-1). Temperature and longitudinal strain was also characterized for constant curvature. The configuration showed insensitivity to these two physical parameters. (C) 2008 Optical Society of America.

Language: English

Type (Professor's evaluation): Scientific