Strain and temperature sensitivities of an elliptical hollow-core photonic bandgap fiber based on Sagnac interferometer.
We fabricated an elliptical hollow-core photonic bandgap fiber (EC-PBGF) by controlling lateral tension in the hollow core region during the fiber drawing process. The absolute value of group modal birefringence becomes relatively high near the bandgap boundaries. We also experimentally measured the strain and temperature sensitivities of the fabricated EC-PBGF-based Sagnac loop interferometer. The strain and temperature sensitivities were very much dependent upon the wavelength. Moreover this PBGF-based interferometer can be a good sensor of physical parameters such as strain and temperature.
Kim
Gilhwan
G
Photonics Research Lab., Korea Institute of Science and Technology, 39-1 Hawolgok-Dong Seongbuk-Ku, Seoul 136-791, Republic of Korea.
Cho
Taiyong
T
Hwang
Kyujin
K
Lee
Kwanil
K
Lee
Kyung S
KS
Han
Young-Geun
YG
Lee
Sang Bae
SB
D017076:Computer-Aided Design; D055119:Elastic Modulus; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation* / Q000379:methods; D008365:Manometry / Q000295:instrumentation* / Q000379:methods; D055100:Optical Fibers; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013314:Stress, Mechanical; D013817:Thermography / Q000295:instrumentation* / Q000379:methods