中红外全纤维光诱导热弹性光谱传感器基于空心反共振纤维的基础上
Weipeng Chen1,2, Shunda Qiao1,2, Ying He1,2
1National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150001, China.
Photoacoustics
|February 20, 2024
概括
一个新的中红外全纤维光诱导热弹性光谱学 (LITES) 传感器利用空心反共振纤维进行气体检测. 这种稳定,具有成本效益的传感器实现了低一氧化碳 (CO) 检测极限.
科学领域:
- 光纤光学光谱学光谱学
- 气体传感技术的技术
- 中红外应用中红外应用
背景情况:
- 传统的气体传感器往往在灵敏度,稳定性和成本方面面临限制.
- 空心反共振纤维 (HC-ARF) 为光传输和气体封闭提供了独特的性能.
- 中红外光谱学针对强大的分子吸收线进行增强检测.
研究的目的:
- 报告第一个中红外全纤维光诱导热弹性光谱学 (LITES) 传感器.
- 用一氧化碳 (CO) 作为目标气体来证明传感器的性能.
- 为了评估传感器的稳定性和检测极限.
主要方法:
- 使用空心反共振纤维 (HC-ARF) 作为光传输介质和气室.
- 采用了反向缩的纤维和HC-ARF后,与气体输入的V槽相结合.
- 针对 4291.50 cm-1 (2.33 μm) 的 CO 吸收线进行传感.
主要成果:
- 实现了全纤维LITES传感器对CO度的优秀线性响应.
- 通过艾伦偏差分析证明了卓越的长期系统稳定性.
- 获得了CO的最低检测极限 (MDL) 3.85 ppm,平均时间为100秒.
结论:
- 基于HC-ARF开发的全纤维LITES传感器是气体传感的一个有前途的技术.
- 该传感器具有低损耗,系统稳定性,以及降低尺寸和成本的优势.
- 这种方法使得在中红外区域能够灵敏稳定地检测特定气体分子.
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