Open AccessStrain and temperature sensitivities of an elliptical hollow-core photonic bandgap fiber based on Sagnac interferometer
Author(s) -
Gilhwan Kim,
Taiyong Cho,
Kyujin Hwang,
Kwanil Lee,
Kyung S. Lee,
YoungGeun Han,
Sang Bae Lee
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.002481
Subject(s) - optics , interferometry , materials science , core (optical fiber) , photonic crystal fiber , birefringence , wavelength , optical fiber , photonic bandgap , photonic crystal , optoelectronics , physics
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.