基于涂有聚合物薄膜的长周期光纤光栅的高灵敏温度传感器

IF 3.1 3区物理与天体物理 Q2 Engineering Optik Pub Date : 2024-07-30 DOI:10.1016/j.ijleo.2024.171978

Huayan Wu , Lingling Li , Liting Liang , Chaoyuan Wang , Heyu Huang , Lina Yue , Ai Zhou

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引用次数: 0

摘要

本研究介绍了一种基于长周期光纤光栅（LPFG）的高灵敏度温度传感器。该传感器由一个长周期光纤光栅组成，光栅上覆盖着一层高 RI（RI）的聚乙烯醇（PVA）层和一层低 RI 的聚二甲基硅氧烷（PDMS）层。PVA 层能使传感器在模式转换区以高灵敏度工作，而 PDMS 层由于具有较高的热光学系数，能进一步提高温度灵敏度。此外，由于 PDMS 的疏水特性，传感器还能减轻湿度的影响。实验结果表明，对于涂有 265 nm PVA 层和 20 μm PDMS 层的周期为 363 μm 的 LPFG，在 20℃-100℃ 范围内的温度灵敏度可达 1232.3 pm/℃。

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A highly sensitive temperature sensor based on long period fiber grating coated with polymer-bilayer-membrane

This study introduces a highly sensitive temperature sensor based on long-period fiber grating (LPFG). The sensor is composed of a long period fiber grating covered by a higher RI (RI) layer of polyvinyl alcohol (PVA) and a lower RI layer of polydimethylsiloxane (PDMS). The PVA layer enables the sensor to operate in the mode transition region with high sensitivity, and the PDMS layer further enhances the temperature sensitivity owing to its high thermos-optic coefficient. In addition, the sensor can mitigate the influence of humidity due to the hydrophobic properties of PDMS. Experimental results show that the temperature sensitivity can achieve to 1232.3 pm/℃ within the range of 20℃-100℃ for an LPFG with a period of 363 μm coated with a 265 nm PVA layer and a 20 μm PDMS layer.

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来源期刊

Optik 物理-光学

CiteScore

6.90

自引率

12.90%

发文量

1471

审稿时长

46 days

期刊介绍： Optik publishes articles on all subjects related to light and electron optics and offers a survey on the state of research and technical development within the following fields: Optics: -Optics design, geometrical and beam optics, wave optics- Optical and micro-optical components, diffractive optics, devices and systems- Photoelectric and optoelectronic devices- Optical properties of materials, nonlinear optics, wave propagation and transmission in homogeneous and inhomogeneous materials- Information optics, image formation and processing, holographic techniques, microscopes and spectrometer techniques, and image analysis- Optical testing and measuring techniques- Optical communication and computing- Physiological optics- As well as other related topics.