Curvature Sensor Based on Hollow-Core Photonic Crystal Fiber Sagnac Interferometer

被引：57

作者：

Gong, Huaping ^{[1
]}

Song, Haifeng ^{[1
]}

Zhang, Sulei ^{[2
]}

Jin, Yongxing ^{[1
]}

Dong, Xinyong ^{[1
]}

机构：

[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China

[2] Zhengzhou Univ, Sch Civil Engn, Zhengzhou 450001, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2014年 / 14卷 / 03期

关键词：

Photonic crystal fiber; Sagnac interferometer; curvature sensor; BENDING SENSOR; TEMPERATURE; STRAIN; GRATINGS;

D O I：

10.1109/JSEN.2013.2283580

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A fiber-optic curvature sensor based on hollowcore photonic crystal fiber (HC-PCF) Sagnac interferometer is demonstrated. The two ends of the 36 cm HC-PCF are spliced to the two arms of a 3 dB single-mode fiber coupler to form a Sagnac interferometer. The output spectra of the Sagnac interferometer under different curvatures are measured and analyzed. The results show that the wavelength shift has a linear relationship with the curvature, and the sensitivity of 0.232 nm.m is achieved in the curvature range of 0-9.9 m(-1). The temperature sensitivity is only 3.7 pm/degrees C, and the cross sensitivity to the curvature measurement is similar to 0.016 m(-1)/degrees C. This merit of low sensitivity to temperature is very useful for the curvature measurement.

引用

页码：777 / 780

页数：4

共 18 条

[1] Temperature and strain insensitive bending measurements with D-type fibre Bragg gratings [J].

Araújo, FM ;

Ferreira, LA ;

Santos, JL ;

Farahi, F .

MEASUREMENT SCIENCE AND TECHNOLOGY, 2001, 12 (07) :829-833

[2] Temperature-insensitive strain sensor with polarization-maintaining photonic crystal fiber based Sagnac interferometer [J].

Dong, Xinyong ;

Tam, H. Y. ;

Shum, P. .

APPLIED PHYSICS LETTERS, 2007, 90 (15)

[3] All-fiber Mach-Zehnder curvature sensor based on multimode interference combined with a long-period grating [J].

Frazao, O. ;

Viegas, J. ;

Caldas, P. ;

Santos, J. L. ;

Araujo, F. M. ;

Ferreira, L. A. ;

Farahi, F. .

OPTICS LETTERS, 2007, 32 (21) :3074-3076

[4]

Frazao O., 2003, IEEE SENS J, V7, P1453

[5] Curvature sensor using a highly birefringent photonic crystal fiber with two asymmetric hole regions in a Sagnac interferometer [J].

Frazao, Orlando ;

Baptista, Jose M. ;

Santos, Jose L. ;

Roy, Philippe .

APPLIED OPTICS, 2008, 47 (13) :2520-2523

[6] Pressure sensor realized with polarization-maintaining photonic crystal fiber-based Sagnac interferometer [J].

Fu, H. Y. ;

Tam, H. Y. ;

Shao, Li-Yang ;

Dong, Xinyong ;

Wai, P. K. A. ;

Lu, C. ;

Khijwania, Sunil K. .

APPLIED OPTICS, 2008, 47 (15) :2835-2839

[7] Curvature measurement by using low-birefringence photonic crystal fiber based Sagnac loop [J].

Gong, H. P. ;

Chan, C. C. ;

Zu, P. ;

Chen, L. H. ;

Dong, X. Y. .

OPTICS COMMUNICATIONS, 2010, 283 (16) :3142-3144

[8] Temperature Compensated Strain Sensor Based on Cascaded Sagnac Interferometers and All-Solid Birefringent Hybrid Photonic Crystal Fibers [J].

Gu, Bobo ;

Yuan, Wu ;

He, Sailing ;

Bang, Ole .

IEEE SENSORS JOURNAL, 2012, 12 (06) :1641-1646

[9] Temperature-insensitive strain measurement using a birefringent interferometer based on a polarization-maintaining photonic crystal fiber [J].

Han, Y. -G. .

APPLIED PHYSICS B-LASERS AND OPTICS, 2009, 95 (02) :383-387

[10] Discrimination of bending and temperature sensitivities with phase-shifted long-period fiber gratings depending on initial coupling strength [J].

Han, YG ;

Lee, JH ;

Lee, SB .

OPTICS EXPRESS, 2004, 12 (14) :3204-3208

← 1 2 →