用于检测水溶液中 Hg²+ 离子的蚀刻 FBG 型光纤传感器

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-09-19 DOI:10.1109/LPT.2024.3463879

Sunil Mohan;Nagendra Kumar

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引用次数: 0

摘要

这篇文章展示了一种光纤传感器，该传感器采用涂覆在蚀刻光纤光栅（EFBG）上的壳聚糖形金纳米粒子（Au-NPs），用于无标记检测水溶液中的 Hg2+。在水中不同的 Hg2+ 浓度下，对拟议光纤的布拉格波长进行监测，从而对传感器特性进行实验研究。传感器在 1-10 ppb 汞浓度范围内线性响应，灵敏度为 101.7pm/ppb。拟议传感器的检测限（LOD）为 0.07 ppb，远低于世界卫生组织（WHO）规定的安全饮用水可接受限值 2 ppb。

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Etched FBG-Based Optical Fiber Sensor for Hg²+ Ion Detection in Aqueous Solution

This letter demonstrates an optical fiber sensor employing chitosan-caped gold nanoparticle (Au-NPs) coated on etched FBG (EFBG) for the label-free detection of Hg2+ in an aqueous solution. The Bragg wavelength of proposed optical fiber is monitored at different Hg2+ concentrations in water for the experimental investigation of sensor characteristics. The sensor responds linearly over a range of 1–10 ppb mercury concentration, with a sensitivity of 101.7pm/ppb. The limit of detection (LOD) of the proposed sensor is 0.07 ppb, well within the World Health Organization’s (WHO) acceptable limit of 2 ppb for safe drinking water.

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.