Kassani Sahar Hosseinzadeh, Park Jiyoung, Jung Yongmin, Kobelke Jens, Oh Kyunghwan
Photonic Device Physics Laboratory, Institute of Physics and Applied Physics, Yonsei University, Seoul 120–749, South Korea.
Opt Express. 2013 Jun 17;21(12):14074-83. doi: 10.1364/OE.21.014074.
An in-line chemical gas sensor was proposed and experimentally demonstrated using a new C-type fiber and a Ge-doped ring defect photonic crystal fiber (PCF). The C-type fiber segment served as a compact gas inlet/outlet directly spliced to PCF, which overcame previous limitations in packaging and dynamic responses. C-type fiber was prepared by optimizing drawing process for a silica tube with an open slot. Splicing conditions for SMF/C-type fiber and PCF/C-type fiber were experimentally established to provide an all-fiber sensor unit. To enhance the sensitivity and light coupling efficiency we used a special PCF with Ge-doped ring defect to further enhance the sensitivity and gas flow rate. Sensing capability of the proposed sensor was investigated experimentally by detecting acetylene absorption lines.
提出了一种在线化学气体传感器，并使用新型C型光纤和掺锗环形缺陷光子晶体光纤（PCF）进行了实验验证。C型光纤段用作直接与PCF拼接的紧凑型气体进出口，克服了以往在封装和动态响应方面的限制。通过优化带有开口槽的石英管的拉丝工艺制备了C型光纤。通过实验确定了单模光纤/C型光纤和PCF/C型光纤的拼接条件，以提供全光纤传感器单元。为了提高灵敏度和光耦合效率，我们使用了具有掺锗环形缺陷的特殊PCF来进一步提高灵敏度和气体流速。通过检测乙炔吸收线，对所提出传感器的传感能力进行了实验研究。
