Title :
Sagnac interferometer based on low-birefringence photonic crystal fiber for strain measurement
Author :
Gong, Huaping ; Chan, Chi Chiu ; Jin, Yongxing ; Dong, Xinyong
Author_Institution :
Inst. of Optoelectron. Technol., China Jiliang Univ., Hangzhou, China
Abstract :
An optical fiber strain sensor by using low-birefringence photonic crystal fiber (PCF) based Sagnac loop is demonstrated. A fiber Sagnac loop is formed by the low-birefringence PCF of about 40cm, and a section of about 140mm PCF is used as the strain sensing element. The output spectra of Sagnac loop under different strain levels are measured and analyzed. The sensitivity of the strain measurement of -0.457pm/με is achieved within the range of 0-2520με.
Keywords :
Sagnac interferometers; birefringence; fibre optic sensors; holey fibres; photonic crystals; strain sensors; Sagnac interferometer; low-birefringence photonic crystal fiber; optical fiber strain sensor; strain measurement; Optical fiber couplers; Optical fiber polarization; Optical fiber sensors; Sagnac interferometers; Strain; Strain measurement; Optical fiber sensor; fiber Sagnac loop; photonic crystal fiber; strain sensor;
Conference_Titel :
Photonics Global Conference (PGC), 2010
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-9882-6
DOI :
10.1109/PGC.2010.5705926
