Kim Gilhwan, Cho Taiyong, Hwang Kyujin, Lee Kwanil, Lee Kyung S, Han Young-Geun, Lee Sang Bae
Photonics Research Lab., Korea Institute of Science and Technology, 39-1 Hawolgok-Dong Seongbuk-Ku, Seoul 136-791, Republic of Korea.
Opt Express. 2009 Feb 16;17(4):2481-6. doi: 10.1364/oe.17.002481.
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.
我们通过在光纤拉丝过程中控制空心区域的横向张力，制造了一种椭圆形空心光子带隙光纤（EC-PBGF）。在带隙边界附近，群模态双折射的绝对值变得相对较高。我们还通过实验测量了基于所制造的EC-PBGF的萨尼亚克环干涉仪的应变和温度灵敏度。应变和温度灵敏度在很大程度上取决于波长。此外，这种基于PBGF的干涉仪可以成为应变和温度等物理参数的良好传感器。
