Highly sensitive hydrogen sensor based on a U-shaped microfiber interferometer coated with Pt/WO3

IF 5 2区物理与天体物理 Q1 OPTICS

Optics and Laser Technology Pub Date : 2025-06-28 DOI:10.1016/j.optlastec.2025.113427

Shi Qiu , Liang Chai , Jinhui Yuan , Bin Liu , Lijiao Zu , Kuiru Wang , Binbin Yan , Xinzhu Sang , Xingdao He , Qiang Wu

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Abstract

As the extensive application of hydrogen energy, highly sensitive detection of hydrogen is important to prevent the risk of an explosion. To achieve good sensing stability, (3-Aminopropyl) triethoxysilane (APTES) was used to immobilize Pt/WO₃ on the U-shaped microfiber sensor. The experimental results show that the proposed U-shaped single mode-tapered four core-single mode (STFS) microfiber sensor has good spectrum stability (maximum wavelength perturbation of 0.013 nm over 30 min) and long-term stability (13 days). Furthermore, when the concentration of hydrogen is changed from 0 % to 1 %, the proposed U-shaped STFS microfiber hydrogen sensor shows a high sensitivity of −17.706 nm/% and a good linearity with a linear regression coefficient of 0.996. The developed hydrogen sensor has temperature and RH sensitivities of 0.0114 nm/℃ and 0.006 nm/%RH, respectively, indicating low temperature and RH cross-sensitivity to hydrogen measurement. The proposed U-shaped STFS microfiber sensor and the functionalized method have potential applications in hydrogen detection, prevention of hydrogen-related accidents and other fields.

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基于涂覆Pt/WO3的u型微光纤干涉仪的高灵敏度氢传感器

随着氢能的广泛应用，对氢气的高灵敏度检测对于防止爆炸危险至关重要。为了获得良好的传感稳定性，采用（3-氨基丙基）三乙氧基硅烷（APTES）将Pt/WO3固定在u型微光纤传感器上。实验结果表明，所设计的u型单模-锥形四芯-单模（STFS）微光纤传感器具有良好的光谱稳定性（30 min内最大波长扰动为0.013 nm）和长期稳定性（13天）。当氢浓度从0%变化到1%时，所设计的u型STFS超光纤氢传感器具有较高的灵敏度（- 17.706 nm/%）和良好的线性度（线性回归系数为0.996）。该传感器的温度和相对湿度灵敏度分别为0.0114 nm/℃和0.006 nm/%RH，对氢气测量具有较低的温度和相对湿度交叉灵敏度。所提出的u型STFS微光纤传感器及其功能化方法在氢气检测、氢相关事故预防等领域具有潜在的应用前景。

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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