期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 32, 期 11, 页码 2113-2122出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2014.2319818
关键词
Birefringence; microstructured optical fiber; optical fiber sensors; Sagnac interferometer; suspended-core fiber (SCF)
资金
- Research Grant Council of Hong Kong Government [B-Q38L]
- Institutional Research Fund of The Hong Kong Polytechnic University [4-BC06]
In this paper, we report on the fabrication, characterization, and sensing applications of a high-birefringence suspendedcore fiber (HB-SCF) using the stack-and-draw technique. Capillaries in two sizes were used for stacking, forming an elliptical core, giving rise to geometric modal birefringence of the HB-SCF. Through a finite-element method, the theoretical values of the phase and group modal birefringence of the HB-SCF were found to be 2.59 x 10(-4) and 4.75 x 10(-4), respectively. Based on a Sagnac interferometer (SI), the group modal birefringence of the HB-SCF was measured to be 4.84 x 10(-4), which agrees well with the theoretical result. The sensing characteristics of the HB-SCF SI for pressure, strain, and torsion measurements were analyzed theoretically and investigated experimentally. It exhibits sensitivities of 2.82 nm/MPa for hydrostatic pressure, 0.43 pm/mu epsilon for strain, and 0.0157/degrees. for torsion measurements. The HB-SCF is made entirely of pure silica without stress-applying parts, thus its modal birefringence is thermally insensitive, resulting in a low temperature sensitivity of similar to 1 pm/degrees C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据