SMF temperature sensor with PDMS coated for respiratory monitoring

IF 3.7 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering Pub Date : 2025-09-17 DOI:10.1016/j.optlaseng.2025.109353

Pingbang Huang , Wenmi Li , Yuxin Liu , Xiaoyun Tang , Yaxun Zhang , Zhihai Liu , Yu Zhang , Libo Yuan

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Abstract

An optical fiber Mach–Zehnder interferometer temperature sensor based on Polydimethylsiloxane (PDMS) sensitization is proposed and implemented. The sensor is composed of droplet-shaped single mode fiber (SMF) coated with PDMS, which utilizes the high negative thermo-optic coefficient and high thermal expansion coefficient of PDMS to enhance the sensitivity of the temperature sensor. The measurement range of this sensor is 15 °C to 85 °C, with a maximum temperature sensitivity of 0.3107nm/ °C, which is 8-time higher than the temperature sensitivity of a droplet-shaped SMF sensor without PDMS coating. The proposed temperature sensor is combined with a wearable oxygen mask to monitor the real-time respiratory status of the human body. This combination has the potential to be applied in the manufacturing of wearable medical or bio-detection devices. The sensor has the advantages of simple fabrication, stable structure, good repeatability, high time stability, and insensitivity to humidity.

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涂有PDMS的SMF温度传感器，用于呼吸监测

提出并实现了一种基于聚二甲基硅氧烷（PDMS）敏化的光纤马赫-曾德尔干涉仪温度传感器。该传感器由涂覆PDMS的液滴型单模光纤（SMF）组成，利用PDMS的高负热光系数和高热膨胀系数来提高温度传感器的灵敏度。该传感器的测量范围为15°C ~ 85°C，最大温度灵敏度为0.3107nm/°C，比未涂覆PDMS的液滴状SMF传感器温度灵敏度高8倍。所提出的温度传感器与可穿戴氧气面罩相结合，以监测人体的实时呼吸状态。这种组合有可能应用于制造可穿戴医疗或生物检测设备。该传感器具有制作简单、结构稳定、重复性好、时间稳定性高、对湿度不敏感等优点。

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 Lasers in Engineering 工程技术-光学

CiteScore

8.90

自引率

8.70%

发文量

384

审稿时长

42 days

期刊介绍： Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement of solutions and new theoretical concepts for experimental methods. Optics and Lasers in Engineering reflects the main areas in which optical methods are being used and developed for an engineering environment. Manuscripts should offer clear evidence of novelty and significance. Papers focusing on parameter optimization or computational issues are not suitable. Similarly, papers focussed on an application rather than the optical method fall outside the journal''s scope. The scope of the journal is defined to include the following: -Optical Metrology- Optical Methods for 3D visualization and virtual engineering- Optical Techniques for Microsystems- Imaging, Microscopy and Adaptive Optics- Computational Imaging- Laser methods in manufacturing- Integrated optical and photonic sensors- Optics and Photonics in Life Science- Hyperspectral and spectroscopic methods- Infrared and Terahertz techniques