Curvature measurement by using low-birefringence photonic crystal fiber based Sagnac loop

被引：73

作者：

Gong, H. P. ^{[1
,2
]}

Chan, C. C. ^{[2
]}

Zu, P. ^{[2
]}

Chen, L. H. ^{[2
]}

Dong, X. Y. ^{[1
]}

机构：

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

[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Div Bioengn, Singapore 637457, Singapore

来源：

OPTICS COMMUNICATIONS | 2010年 / 283卷 / 16期

关键词：

Photonic crystal fiber; Sagnac interferometer; Curvature sensor; TEMPERATURE SENSITIVITY; INTERFEROMETER; MIRROR; STRAIN;

D O I：

10.1016/j.optcom.2010.04.023

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An optical fiber curvature sensor with low-birefringence photonic crystal fiber (PCF) based Sagnac loop is demonstrated experimentally. The low-birefringence PCF of about 40 cm long is inserted into Sagnac loop, and a section of it about 155 mm is used as the sensing element. The Sagnac output spectra under different curvatures are measured and analyzed. The results show that the wavelength shift of the transmission dip has a linear relationship with the curvature. The sensitivity of the curvature measurement of -0.337 nm is achieved in the range of 0-9.92 m(-1). And the temperature effect of the proposed sensor is also analyzed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3142 / 3144

页数：3

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