An Optical Frequency Domain Reflectometer's (OFDR) Performance Improvement via Empirical Mode Decomposition (EMD) and Frequency Filtration for Smart Sensing

被引：12

作者：

Belokrylov, Maxim E. ^{[1
]}

Kambur, Dmitry A. ^{[1
,2
]}

Konstantinov, Yuri A. ^{[1
]}

Claude, D. ^{[1
]}

Barkov, Fedor L. ^{[1
]}

机构：

[1] Russian Acad Sci, Perm Fed Res Ctr, Ural Branch, 13a Lenin St, Perm 614990, Russia

[2] Perm Natl Res Polytech Univ, Appl Math Dept, Komsomolsky Ave 29, Perm 614990, Russia

来源：

SENSORS | 2024年 / 24卷 / 04期

关键词：

optical frequency domain reflectometry; OFDR; optical measurements; empirical mode decomposition; auxiliary interferometer; gas cell; TIME; SYSTEM; SAFETY;

D O I：

10.3390/s24041253

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We describe a method for reducing the cost of optical frequency domain reflectometer (OFDR) hardware by replacing two reference channels, including an auxiliary interferometer and a gas cell, with a single channel. To extract useful information, digital signal processing methods were used: digital frequency filtering, as well as empirical mode decomposition. It is shown that the presented method helps to avoid the use of an unnecessary analog-to-digital converter and photodetector, while the OFDR trace is restored by the equal frequency resampling (EFR) algorithm without loss of high resolution and with good measurement repeatability.

引用

页数：18

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