光学学报, 2015, 35 (9): 0906001, 网络出版: 2015-08-27
He气辅助熔接的全光纤型HC-PCF低压气体腔的制备
Preparation of All-Fiber HC-PCF Low-Pressure Gas Cell by the He-Assisted Fusion Splicing Technique
光纤光学 全光纤型低压气体腔 He辅助熔接 吸收光谱 fiber optics all-fiber low-pressure gas cell He-assisted fusion splicing absorption spectrum
摘要
提出了一种He气辅助熔接的全光纤型空芯光子晶体光纤(HC-PCF)低压气体腔的制备方法.通过用高压待充气体冲洗HC-PCF,确保了腔内的气体纯度；通过利用光谱监测系统监测HC-PCF 降压过程及He 气辅助熔接过程中CO2吸收光谱的变化,研究了HC-PCF 中气体动力学运动过程；通过利用He气辅助熔接方法,制备得到压强为7 kPa、插入损耗小于2 dB、长度为10 m 的全光纤型HC-PCF 低压CO2气体腔.该方法也适用于更低压强的HC-PCF气体腔的研制,且制备的气体腔具有良好的气密性和长期稳定性.
Abstract
A method of He-assisted fusion splicing is demonstrated to prepare the all-fiber hollow-core photonic crystal fiber (HC-PCF) low-pressure gas cell.In the preparing process,the high gas purity is guaranteed by flushing the HC-PCF with the high-pressure desired gas;the dynamical gas flow in the HC-PCF is studied with a self-made real-time spectral detection system;and a 10 m all-fiber HC-PCF low-pressure CO2 gas cell with the pressure of 70 kPa and insertion loss less than 2 dB is successfully prepared by He-assisted fusion splicing technique.This method may also be suitable for the fabrication of HC-PCF gas cell with lower pressure,and the prepared gas cell shows good air-tightness and long-term stability.
郝军, 刘晔, 李文彩, 陈迪俊, 冯素娟, 蔡海文, 毛庆和. He气辅助熔接的全光纤型HC-PCF低压气体腔的制备[J]. 光学学报, 2015, 35(9): 0906001. Hao Jun, Liu Ye, Li Wencai, Chen Dijun, Feng Sujuan, Cai Haiwen, Mao Qinghe. Preparation of All-Fiber HC-PCF Low-Pressure Gas Cell by the He-Assisted Fusion Splicing Technique[J]. Acta Optica Sinica, 2015, 35(9): 0906001.
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