Optimized coupling loss between single mode fiber and hollow-core photonic crystal fiber for Raman gas detection

被引：0

作者：

Zhang Xiu-Mei ^{[1
]}

Jiang Shu-Bo ^{[1
]}

Wang Xu ^{[1
]}

机构：

[1] Nanjing Tech Univ, Coll Elect Engn & Control Sci, Nanjing 211816, Jiangsu, Peoples R China

来源：

JOURNAL OF INFRARED AND MILLIMETER WAVES | 2017年 / 36卷 / 06期

关键词：

hollow-core photonic crystal fiber; single mode fiber; coupling loss; Fresnel reflection; gas detection;

D O I：

10.11972/j.issn.1001-9014.2017.06.005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this investigation, the coupling losses caused by Fresnel reflection, core misalignment between single mode fiber (SMF) and HC-PCF are analyzed. A novel solution proposed from this research will reduce the coupling losses by using a T-type tube as a connector. Meanwhile, the theoretically calculated optimized gaps are at 15 pm in SMF-HCPCF direction and 25 pm in HCPCF-SMF direction. Thus, an experiment has been carried out, and the results of the practical gap in the above mentioned two directions have also been obtained. Furthermore, compared with detection by traditional methods, the proposed new detection method with PCF can remarkably enhance the Raman spectroscopy signal. Finally, the prospect of using the combination of HC-PCF and Raman spectroscopy in gas-cell detection has been demonstrated by using oxygen and nitrogen.

引用

页码：660 / 664

页数：5