Volatile organic compound gas detection with a wide concentration range based on optical fiber SPR

IF 4.6 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-06-05 DOI:10.1016/j.optlastec.2025.113275

Yejun Shao, Xueqing Zheng, Junlan Zhong, Zhewen Ding, Lin Yin, Ben Xu, Chunlian Zhan, Chunliu Zhao

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引用次数: 0

Abstract

This paper proposes a volatile organic compound (VOC) gas sensor based on optical fiber surface plasmon resonance (SPR). The sensor uses a heterogeneous core structure of multimode fiber-single mode fiber-multimode fiber, covered by chromium (Cr) film and gold (Au) film to stimulate and spread the SPR, as a transducer. And polydimethylsiloxane (PDMS) is coating to the fiber surface as a VOC-sensitive material. The volume and refractive index changes caused by the reaction of PDMS with VOC gases alter the sensor transmission spectra significantly, which ensures the feasibility of VOC detection by the SPR sensor. According to experimental results, the sensor has outstanding stability for detect isopropanol over a broad concentration range of 0 to 1490 × 10³ ppm. In a one-hour and five-days stability test, the sensor’s standard error of measurement are 0.0519 and 0.1096, respectively, indicating its good reliability in over the short to long term measurement. The SPR sensor’s broad detection range, excellent stability and straightforward fabrication process make it a promising choice for industrial applications.

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基于光纤SPR的大浓度范围挥发性有机化合物气体检测

提出了一种基于光纤表面等离子体共振（SPR）的挥发性有机化合物（VOC）气体传感器。该传感器采用多模光纤-单模光纤-多模光纤的异质芯结构，覆盖有铬（Cr）膜和金（Au）膜来刺激和扩散SPR，作为换能器。聚二甲基硅氧烷（PDMS）作为voc敏感材料涂覆在纤维表面。PDMS与VOC气体的反应引起的体积和折射率的变化显著改变了传感器的透射光谱，保证了SPR传感器检测VOC的可行性。实验结果表明，该传感器在0 ~ 1490 × 103 ppm的宽浓度范围内检测异丙醇具有出色的稳定性。在1小时和5天的稳定性测试中，传感器的测量标准误差分别为0.0519和0.1096，表明其在短期和长期测量中都具有良好的可靠性。SPR传感器广泛的检测范围，出色的稳定性和简单的制造工艺使其成为工业应用的有希望的选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Laser Technology 物理-光学

CiteScore

8.50

自引率

10.00%

发文量

1060

审稿时长

3.4 months

期刊介绍： Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication. The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas: •development in all types of lasers •developments in optoelectronic devices and photonics •developments in new photonics and optical concepts •developments in conventional optics, optical instruments and components •techniques of optical metrology, including interferometry and optical fibre sensors •LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow •applications of lasers to materials processing, optical NDT display (including holography) and optical communication •research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume) •developments in optical computing and optical information processing •developments in new optical materials •developments in new optical characterization methods and techniques •developments in quantum optics •developments in light assisted micro and nanofabrication methods and techniques •developments in nanophotonics and biophotonics •developments in imaging processing and systems