红外与毫米波学报2017，Vol.36Issue(6)：660-664,5.DOI:10.11972/j.issn.1001-9014.2017.06.005
空芯光子晶体光纤与单模光纤耦合优化及在拉曼气体检测中的应用
Optimized coupling loss between single mode fiber and hollow-core photonic crystal fiber for Raman gas detection
摘要
Abstract
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 μm in SMF-HCPCF direction and 25 μm 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.关键词
空芯光子晶体光纤/单模光纤/耦合损耗/菲涅尔反射/气体检测Key words
hollow-core photonic crystal fiber/single mode fiber/coupling loss/Fresnel reflection/gas detection分类
信息技术与安全科学引用本文复制引用
张秀梅,蒋书波,王旭..空芯光子晶体光纤与单模光纤耦合优化及在拉曼气体检测中的应用[J].红外与毫米波学报,2017,36(6):660-664,5.基金项目
Supported by National Nature Science Foundation of China (61308066) （61308066）
