Kim, Gilhwan Cho, Taiyong Hwang, Kyujin Lee, Kwanil Lee, Kyung S. Han, Young-Geun Lee, Sang Bae 2024-01-20T22:01:14Z 2024-01-20T22:01:14Z 2021-09-03 2009-02-16 1094-4087 https://pubs.kist.re.kr/handle/201004/132735 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. (C) 2009 Optical Society of America English OPTICAL SOC AMER POLARIZATION PROPERTIES CRYSTAL FIBERS SURFACE-MODES BIREFRINGENCE PRESSURE Strain and temperature sensitivities of an elliptical hollow-core photonic bandgap fiber based on Sagnac interferometer Article 10.1364/OE.17.002481 1 OPTICS EXPRESS, v.17, no.4, pp.2481 - 2486 OPTICS EXPRESS 17 4 2481 2486 scie scopus 000263432500041 2-s2.0-60549113035 Optics Optics Article POLARIZATION PROPERTIES CRYSTAL FIBERS SURFACE-MODES BIREFRINGENCE PRESSURE