Identification of external media using a long-period grating and optical time-domain reflectometry

被引：4
作者：
Juca, Marco Aurglio [1 ,2 ]
Pereira, Isabela Victoria C. [2 ]
Spelta, Pedro C. G. [2 ]
Dos Santos, Alexandre Bessa [2 ]
机构：
[1] Fed Ctr Technol Educ Celso Suckow Fonseca CEFET RJ, Telecommun Coordinat, Rua Imperador 971, BR-25620003 Petropolis, RJ, Brazil
[2] Fed Univ Juiz De Fora UFJF, Elect Circuits Dept, Grad Program Elect Engn, Campus Univ, BR-36036330 Juiz De Fora, MG, Brazil
来源：
APPLIED OPTICS | 2023年 / 62卷 / 08期
关键词：
REFRACTIVE-INDEX; FIBER GRATINGS; SENSORS; SENSITIVITY;
D O I：
10.1364/AO.476282
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The application of signal processing and feature extraction to reflectometry traces aiming at sensor interrogation is not sufficiently explored. In this work, traces produced by an optical time-domain reflectometer in experiments using a long-period grating in different external media are analyzed using signal processing techniques inspired by audio processing. The objective is to demonstrate that, using this type of analysis, it is possible to correctly identify the external medium through the characteristics of the reflectometry trace. Results show that the features extracted from the traces were able to produce good classifiers, one of them achieving 100% correct classification for the data set presently considered. This technology could be applied in scenarios where it is necessary to distinguish among a given set of gases or liquids nondestructively. (c) 2023 Optica Publishing Group
引用
收藏
页码：C43 / C48
页数：6
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