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

被引：69

作者：

Frazao, Orlando ^{[1
]}

Baptista, Jose M. ^{[1
,2
]}

Santos, Jose L. ^{[1
,3
]}

Roy, Philippe ^{[4
]}

机构：

[1] INESC, P-4169007 Oporto, Portugal

[2] Univ Madeira, Dept Matemat & Engn, P-9000390 Funchal, Portugal

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

[4] Univ Limoges, Photon Dept, CNRS, UMR 6172, F-87060 Limoges, France

来源：

APPLIED OPTICS | 2008年 / 47卷 / 13期

关键词：

D O I：

10.1364/AO.47.002520

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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.

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收藏

页码：2520 / 2523

页数：4

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