(英)空芯光子晶体光纤与单模光纤的耦合优化及在拉曼气体检测中的应用
投稿时间:2017-05-02  最后修改时间:2017-07-02  点此下载全文
引用本文:
摘要点击次数: 57
全文下载次数: 
作者单位E-mail
张秀梅 南京工业大学电气工程与控制科学学院 bhldhd2016@163.com 
蒋书波 南京工业大学电气工程与控制科学学院 jiangshubo@njtech.edu.cn 
王旭 南京工业大学电气工程与控制科学学院  
基金项目:由国家青年科学基金支持(基金号为61308066)
中文摘要:近年来,在光学界光子晶体光纤在拉曼光谱检测中的应用引起了科学家极大地研究兴趣。本文分析了由菲涅尔反射、中心点偏移引起的耦合损耗,并提出了一种新的方法——用T型金属管作为光子晶体光纤和单模光纤的连接器,并计算从单模光纤到光子晶体光纤方向以及从光子晶体光纤到单模光纤方向的最佳耦合距离分别为15μm和25μm,并用实验证明了结论的可靠性。最后,采用浓度为0.01%的氧气证明了本文设计的系统在低浓度气体检测的可行性,同时采用浓度为3%, 1.5%, 0.5%, 0.1%的氧气和二氧化碳的混合气体肯定了光子晶体光纤同拉曼检测技术相结合后在气体检测方向的应用前景。
中文关键词:空心光子晶体光纤  单模光纤  耦合损耗  菲涅尔反射  气体检测
 
Optimized coupling loss between Simple Mode Fiber and Hollow-core Photonic Crystal Fiber for Raman gas detection
Abstract:---Raman spectroscopy with Hollow-core Photonic Crystal Fiber (HC-PCF) is aroused implementation interest in current optical community. The coupling losses caused by Fresnel reflection, deviation of the core fiber between Simple Mode Fiber (SMF) and HC-PCF are analyzed. A solution is proposed to reduce the coupling loss by using a T-type tube as a connector. Meanwhile, the optimized gaps in two directions (one is from SMF to HC-PCF and the other is from HC-PCF to SMF) are calculated theoretically at 15μm in SMF-HCPCF direction and 25μm in HCPCF-SMF direction, respectively. The practical gap results in this two direction are also obtained. Finally, the low detectable concentrations with oxygen is used and ppm detection order is obtained and oxygen and carbon dioxide mixture (3%, 1.5%, 0.5%, 0.1%) are utilized to demonstrate the promising gas-cell detection system based on HC-PCF.
keywords:Hollow-core Photonic Crystal Fiber  Simple Mode Fiber  coupling loss  Fresnel reflection  gas detection
查看全文  查看/发表评论  下载PDF阅读器

版权所有:《红外与毫米波学报》编辑部