量子电子学报, 2017, 34 (3): 379, 网络出版: 2017-06-09   

基于微纳光纤模式干涉仪和石墨烯薄膜的氨气传感器

Ammonia sensor based on microfiber modal interferometer and graphene film
作者单位
暨南大学光子技术研究院, 广东 广州 510632
摘要
将单锥微纳光纤模式干涉仪和石墨烯相结合,实现了一种高灵敏度的光纤式氨气传感器,其利用 石墨烯的特异性吸附效应及微纳光纤结构的高灵敏度传感特性,通过检测干涉光谱的漂移量实现了对氨气 浓度微弱变化的检测。对不同组传感器进行了对比分析,结果表明当光纤直径为3.4 μm时最大检测灵敏度为10.8 pm/ppm, 与文献中采用其它光纤结构所报道的结果相比几乎提高了一倍。该传感器具有结构简单、易于实现 及灵敏度高等优点,在危害气体浓度报警和人体健康检测等领域有潜在的应用前景。
Abstract
A fiber ammonia gas sensor with high sensitivity is realized by combining single taper-based microfiber modal interferometer with graphene film. It uses grapheme’s specific absorption property to ammonia and high sensitivity sensing characteristics of microfiber structure, and the detection of weak changes of ammonia concentration is realized by detecting the shift of interference spectrum. Comparison and analysis are carried out among different groups of sensors. Results show that when the fiber diameter is 3.4 μm, the maximum detection sensitivity is 10.8 pm/ppm, which is almost doubled compared to the results of other reported fiber structures. The proposed sensor has the advantages of simple structure, easy implementation and high sensitivity, and it has potential application prospect in the fields of harmful gases concentration alarm and human health detection etc.

盛苗苗, 范鹏程, 于波, 黄赟赟, 李杰, 关柏鸥. 基于微纳光纤模式干涉仪和石墨烯薄膜的氨气传感器[J]. 量子电子学报, 2017, 34(3): 379. SHENG Miaomiao, FAN Pengcheng, YU Bo, HUANG Yunyun, LI Jie, GUAN Baiou. Ammonia sensor based on microfiber modal interferometer and graphene film[J]. Chinese Journal of Quantum Electronics, 2017, 34(3): 379.

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