Compact Three-Channel Photonic Crystal Fiber Sensor Based on Surface Plasmon Resonance

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2024-09-09 DOI:10.1007/s11468-024-02522-y

Tianli Huo, Xili Jing, Zhiyong Yin, Tianci Gao, Mingshi Song

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Abstract

In order to improve the integration of fiber optic sensors, this paper designs a dual-core three-channel photonic crystal fiber (PCF) optic sensor that can simultaneously measure the refractive index of a liquid, its temperature, and the ambient magnetic field. Based on the PCF as well as SPR principles, the sensor has two D-planes, one coated with PDMS as well as a gold film for detecting temperature and the other coated with a gold film for detecting refractive index and coated with a gold film over the air holes on the side of the core where the refractive index is measured and a magnetic fluid injected into the air holes to detect the magnetic field. The results show a maximum sensitivity of 20,000 nm/RIU for refractive index, a linear sensitivity of 116 pm/Oe for magnetic field, and 5300 pm/°C for temperature when the sample’s refractive index is between 1.36 and 1.42, the temperature is between 0 °C and 50 °C, and the magnetic field is between 20 and 550 Oe. The sensitivity matrix of temperature versus refractive index is also given. The sensor is compact and simple to prepare, providing a new solution for miniaturization and integration of multifunctional photonic devices.

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基于表面等离子体共振的紧凑型三通道光子晶体光纤传感器

为了提高光纤传感器的集成度，本文设计了一种双核三通道光子晶体光纤（PCF）光学传感器，可同时测量液体的折射率、温度和环境磁场。基于 PCF 和 SPR 原理，该传感器有两个 D 平面，一个涂有 PDMS 和金膜，用于检测温度；另一个涂有金膜，用于检测折射率，并在测量折射率的纤芯一侧气孔上涂有金膜，气孔中注入磁性流体，用于检测磁场。结果显示，当样品的折射率在 1.36 和 1.42 之间，温度在 0 °C 和 50 °C 之间，磁场在 20 和 550 Oe 之间时，折射率的最大灵敏度为 20,000 nm/RIU，磁场的线性灵敏度为 116 pm/Oe，温度的线性灵敏度为 5300 pm/°C。此外，还给出了温度与折射率的灵敏度矩阵。该传感器结构紧凑、制备简单，为多功能光子器件的微型化和集成化提供了一种新的解决方案。

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

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.