Low-cost high-resolution distributed optical fiber system for spectrophotometric analysis of liquid samples: Application to detection of azo dyes

IF 6.5 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Sensors and Actuators Reports Pub Date : 2024-03-12 DOI:10.1016/j.snr.2024.100190

Genni Testa, Gianluca Persichetti, Romeo Bernini

{"title":"Low-cost high-resolution distributed optical fiber system for spectrophotometric analysis of liquid samples: Application to detection of azo dyes","authors":"Genni Testa, Gianluca Persichetti, Romeo Bernini","doi":"10.1016/j.snr.2024.100190","DOIUrl":null,"url":null,"abstract":"<div><p>A distributed optical fiber system for spectrophotometric analysis of liquid samples based on light diffusing fiber (LDF) is presented. The sensor is based on a high-density white light emitting diode (LED) strip, which is side coupled to a glass based light-diffusing fiber (LDF) that acts as distributed optical receiver. The light emitted from a single LED propagates through the sample medium, is collected by the LDF and is then detected at the end of the fiber by a mini spectrometer. By sequentially turning on one LED at a time, the system permits the spectrophotometric analysis of the sample medium along the entire fiber length. This approach is capable of a continuous monitoring of absorbance spatial profile of liquid sample in the whole visible spectrum with a single low-cost spectrometer. The experimental results confirm the possibility of distributed measurements with a spatial resolution of about 12 mm over 1 m of measurement range. The approach has been successfully employed to the distributed detection and localization of azo dyes in water with a limit of detection lower than 1 ppm.</p></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":"7 ","pages":"Article 100190"},"PeriodicalIF":6.5000,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666053924000067/pdfft?md5=8fa9515691ea2ca0e20085774cb67d4f&pid=1-s2.0-S2666053924000067-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors and Actuators Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666053924000067","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

A distributed optical fiber system for spectrophotometric analysis of liquid samples based on light diffusing fiber (LDF) is presented. The sensor is based on a high-density white light emitting diode (LED) strip, which is side coupled to a glass based light-diffusing fiber (LDF) that acts as distributed optical receiver. The light emitted from a single LED propagates through the sample medium, is collected by the LDF and is then detected at the end of the fiber by a mini spectrometer. By sequentially turning on one LED at a time, the system permits the spectrophotometric analysis of the sample medium along the entire fiber length. This approach is capable of a continuous monitoring of absorbance spatial profile of liquid sample in the whole visible spectrum with a single low-cost spectrometer. The experimental results confirm the possibility of distributed measurements with a spatial resolution of about 12 mm over 1 m of measurement range. The approach has been successfully employed to the distributed detection and localization of azo dyes in water with a limit of detection lower than 1 ppm.

Abstract Image

查看原文本刊更多论文

用于液体样品分光光度分析的低成本高分辨率分布式光纤系统：偶氮染料检测应用

本文介绍了一种基于光扩散光纤（LDF）的分布式光纤系统，用于对液体样品进行分光光度分析。该传感器基于一个高密度白色发光二极管（LED）带，LED 带侧面耦合到作为分布式光接收器的玻璃基光扩散光纤（LDF）上。单个 LED 发出的光在样品介质中传播，被 LDF 收集，然后在光纤末端被微型光谱仪检测到。通过每次依次打开一个 LED，系统可以对整个光纤长度上的样品介质进行分光光度分析。这种方法只需一台低成本光谱仪，就能在整个可见光谱范围内对液体样品的吸光度空间分布进行连续监测。实验结果证实，在 1 米的测量范围内，可以进行空间分辨率约为 12 毫米的分布式测量。该方法已成功用于水中偶氮染料的分布式检测和定位，检测限低于 1 ppm。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Sensors and Actuators Reports Multiple-

CiteScore

9.60

自引率

0.00%

发文量

审稿时长

49 days

期刊介绍： Sensors and Actuators Reports is a peer-reviewed open access journal launched out from the Sensors and Actuators journal family. Sensors and Actuators Reports is dedicated to publishing new and original works in the field of all type of sensors and actuators, including bio-, chemical-, physical-, and nano- sensors and actuators, which demonstrates significant progress beyond the current state of the art. The journal regularly publishes original research papers, reviews, and short communications. For research papers and short communications, the journal aims to publish the new and original work supported by experimental results and as such purely theoretical works are not accepted.