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Photonics
Special Issues
Progress and Prospects in Optical Fiber Sensing
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Progress and Prospects in Optical Fiber Sensing

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Lasers, Light Sources and Sensors".

Deadline for manuscript submissions: closed (20 September 2024) | Viewed by 5112

Special Issue Editor

Dr. Xiangge He

E-Mail Website
Guest Editor
School of Earth and Space Sciences, Peking University, Beijing 100871, China
Interests: optical fiber sensing; distributed acoustic sensor; optical fiber temperature and pressure sensing; sensing applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Optical fiber sensing has made significant progress in recent years and holds great prospects for the future. With its ability to detect changes in temperature, strain, pressure, and other physical and chemical parameters, this technology has become critical in various fields, including structural health monitoring, industrial process control, and environmental sensing. Advances in fiber optic technology, signal processing, and sensing algorithms have led to improvements in the sensitivity, accuracy, and reliability of optical fiber sensors. Furthermore, the development of new materials, such as fiber Bragg gratings and photonic crystal fibers, has expanded the range of applications. As research in this field continues, it is expected that optical fiber sensing will play an increasingly important role in addressing societal challenges such as infrastructure monitoring, energy efficiency, and healthcare.

This Special Issue aims to bring together original research and review articles on recent advances, technologies, solutions, applications, and new challenges in the field of optical fiber sensing. The topics will include, but are not limited to:

  • Physical, chemical, and biological optical fiber sensors;
  • Interferometric, scattering, and polarimetric optical fiber sensors;
  • Micro- and nanostructured optical fiber sensors;
  • Distributed and multiplexed sensing and sensor networking;
  • Environmental, geophysical, marine, security, defense, and industrial applications.

Dr. Xiangge He
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • optical fiber sensing
  • sensing technology
  • distributed sensing
  • sensor structure
  • applications

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

8 pages, 2418 KiB  
Article
A Crack Detection Method for an Insulator Based on the Optical Frequency Domain Reflectometry Fiber Sensing System
by Jing Zhao, Yongqiang Wen, Aodi Yu, Wei Li and Li Xia
Photonics 2024, 11(9), 854; https://doi.org/10.3390/photonics11090854 - 10 Sep 2024
Viewed by 1019
Abstract
In this paper, a method for detection of crack locations and the width of basin insulators is proposed. Based on the optical frequency domain reflectometry (OFDR) system, the system utilizes an FBG with high feedback for strain as well as temperature, which is [...] Read more.
In this paper, a method for detection of crack locations and the width of basin insulators is proposed. Based on the optical frequency domain reflectometry (OFDR) system, the system utilizes an FBG with high feedback for strain as well as temperature, which is affixed to the surface of the tub insulator, and a common single-mode optical fiber, which is used for transmitting data and connected to the optical backscattering reflectometry interrogator. The interrogator measures the backscattered light from the FBG, which varies with temperature or strain. The method has been used to measure the location and width of several different cracks and can locate the crack position with a spatial resolution of 1 mm and measure the crack width with a resolution of 0.77 mm. The method has been used to measure the position and width of insulators. This method provides a simple and fast approach to crack detection in insulators. Full article
(This article belongs to the Special Issue Progress and Prospects in Optical Fiber Sensing)
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17 pages, 11374 KiB  
Article
A Pattern Recognition Method for Filter Bags in Bag Dust Collectors Based on Φ-Optical Time-Domain Reflectometry
by Xu’an Liu, Yuquan Tang, Zhirong Zhang, Shuang Yang, Zhouchang Hu and Yuan Xu
Photonics 2024, 11(2), 152; https://doi.org/10.3390/photonics11020152 - 5 Feb 2024
Cited by 1 | Viewed by 1574
Abstract
The use of phase-sensitive optical time-domain reflectometry (Φ-OTDR)-distributed fiber vibration sensors to detect and identify damaged bags in bag dust collectors has the potential to overcome the inadequacy of traditional damaged bag detection methods. In our previous study, we verified the feasibility of [...] Read more.
The use of phase-sensitive optical time-domain reflectometry (Φ-OTDR)-distributed fiber vibration sensors to detect and identify damaged bags in bag dust collectors has the potential to overcome the inadequacy of traditional damaged bag detection methods. In our previous study, we verified the feasibility of applying this technique in the field of damaged bag detection in bag filters. However, many problems still occur in engineering applications when using this technology to detect and identify damaged filter bags in pulse-jet dust-cleaning bag dust collectors. Further studies are needed to characterize the fiber vibration signals inside different types of rectangular damaged filter bags. A filter bag damage identification and detection method based on empirical mode decomposition (EMD) and a backpropagation (BP) neural network is proposed. The signal feature differences between intact filter bags and damaged filter bags with different rectangular hole sizes and positions are comparatively analyzed, and optimal feature difference parameters are proposed. Support vector machine (SVM) and a BP neural network are used to recognize different types of filter bag signals, and the comparison results show that the BP neural network algorithm is better at recognizing different types of filter bags, obtaining the highest recognition rate of 97.3%. Full article
(This article belongs to the Special Issue Progress and Prospects in Optical Fiber Sensing)
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13 pages, 5542 KiB  
Article
Fiber Bragg Grating Salinity Sensor Array Based on Fiber Tapering and HF Etching
by Gaochao Li, Yongjie Wang, Mengchao Yan, Tuanwei Xu, Ancun Shi, Yuanhui Liu, Xuechun Li and Fang Li
Photonics 2023, 10(12), 1315; https://doi.org/10.3390/photonics10121315 - 29 Nov 2023
Cited by 4 | Viewed by 1833
Abstract
We propose a seawater salinity sensor array based on a micro/nanofiber Bragg grating structures, which allows for the simultaneous measurement of temperature and salinity. The proposed sensing structure is fabricated through a process involving optical fiber tapering, femtosecond laser inscription, and chemical etching. [...] Read more.
We propose a seawater salinity sensor array based on a micro/nanofiber Bragg grating structures, which allows for the simultaneous measurement of temperature and salinity. The proposed sensing structure is fabricated through a process involving optical fiber tapering, femtosecond laser inscription, and chemical etching. The equivalent refractive index (RI) of this sensor structure is influenced by the surrounding RI, resulting in a Bragg characteristic wavelength shift that can be used for salinity sensing. The experimental results show that the salinity sensitivity for two cascaded sensor arrays is 8.39 pm/‰ and 7.71 pm/‰, while the temperature sensitivity is 8.28 pm/°C and 8.03 pm/°C, respectively. This sensor structure is compact, exhibits excellent linearity, and offers good repeatability. It holds great potential for applications in seawater environmental monitoring and quantitative studies of seawater dispersion characteristics. Full article
(This article belongs to the Special Issue Progress and Prospects in Optical Fiber Sensing)
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