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Photonics
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Optical Fibre Sensing: Recent Advances and Future Perspectives
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Optical Fibre Sensing: Recent Advances and Future Perspectives

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

Deadline for manuscript submissions: 30 July 2024 | Viewed by 5083

Special Issue Editor

Dr. Jun Long Lim

E-Mail Website1 Website2
Guest Editor
Agency for Science, Technology and Research, Institute for Infocomm Research, Singapore
Interests: optical fiber sensor; specialty optical fiber; fiber Bragg gratings; photonics waveguide; harsh environment sensing; aging healthcare
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Optical fibre has a broad range of sensing applications in the wavelength, frequency, time, or phase domains. It can be employed as point sensors, quasi-distributed or distributed sensing networks for many physical parameters. Nowadays, optical fibre sensing has become a promising innovation and a standard ‘must have’ in certain industries. The versatility of its setup configuration, from the light emitter to the photodetector components, allows for passive or active sensing. This makes optical fibre sensing ideal for a wide range of applications, such as structural health monitoring, environmental monitoring, medical diagnostics, industrial process control, homeland security and military defence.

Optical fibre sensing has come a long way since its first patent was granted in June 27, 1967 (US Patent 3,327,584). Over the past five decades, the technology has evolved through advances in materials science, precision engineering, and automation, to name a few. These advancements have enabled optical fibre sensing to be applied to a wide range of subjects and fields, resulting in new use cases in recent years. This Special Issue aims to showcase recent original high-impact research in the field of optical fibre sensing and highlight its various applications.

We invite both theoretical and experimental submissions of original articles, review articles, and technical notes that focus on recent state-of-the-art advances and future directions in the field of optical fibre sensing. Topics of interest include, but are not limited to:

  • Fibre integrated optoelectronics generation/detection such as photovoltaics and photodetectors;
  • Frequency shift optical fibre interferometry;
  • Hyperspectral optical fibre imaging;
  • Multifunctional optical fibre spectroscopy;
  • Nanostructure, superstructure, multimaterial modified optical fibre sensing;
  • Novel components and applications in fibre Bragg gratings, fibre lasers, interrogator devices, femtosecond laser inscription, focused ion beam devices, healthcare and biomedical devices, etc.

We look forward to receiving your submissions!

Dr. Jun Long Lim
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 fibre sensors
  • optical fibre sensing
  • characterisation
  • optical fibre design
  • fibre fabrication
  • power delivery
  • fibre laser
  • optoelectronics

Published Papers (4 papers)

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Research

10 pages, 2936 KiB  
Article
Magnetic Field Sensing via Acoustic Sensing Fiber with Metglas® 2605SC Cladding Wires
by Zach Dejneka, Daniel Homa, Joshua Buontempo, Gideon Crawford, Eileen Martin, Logan Theis, Anbo Wang and Gary Pickrell
Photonics 2024, 11(4), 348; https://doi.org/10.3390/photonics11040348 - 10 Apr 2024
Viewed by 469
Abstract
Magnetic field sensing has the potential to become necessary as a critical tool for long-term subsurface geophysical monitoring. The success of distributed fiber optic sensing for geophysical characterization provides a template for the development of next generation downhole magnetic sensors. In this study, [...] Read more.
Magnetic field sensing has the potential to become necessary as a critical tool for long-term subsurface geophysical monitoring. The success of distributed fiber optic sensing for geophysical characterization provides a template for the development of next generation downhole magnetic sensors. In this study, Sentek Instrument’s picoDAS is coupled with a multi-material single mode optical fiber with Metglas® 2605SC cladding wire inclusions for magnetic field detection. The response of acoustic sensing fibers with one and two Metglas® 2605SC cladding wires was evaluated upon exposure to lateral AC magnetic fields. An improved response was demonstrated for a sensing fiber with in-cladding wire following thermal magnetic annealing (~400 °C) under a constant static transverse magnetic field (~200 μT). A minimal detectable magnetic field of ~500 nT was confirmed for a sensing fiber with two 10 μm cladding wires. The successful demonstration of a magnetic field sensing fiber with Metglas® cladding wires fabricated via traditional draw processes sets the stage for distributed measurements and joint inversion as a compliment to distributed fiber optic acoustic sensors. Full article
(This article belongs to the Special Issue Optical Fibre Sensing: Recent Advances and Future Perspectives)
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14 pages, 2359 KiB  
Article
Combined Radiation and Temperature Effects on Brillouin-Based Optical Fiber Sensors
by Jérémy Perrot, Adriana Morana, Emmanuel Marin, Youcef Ouerdane, Aziz Boukenter, Johan Bertrand and Sylvain Girard
Photonics 2023, 10(12), 1349; https://doi.org/10.3390/photonics10121349 - 07 Dec 2023
Viewed by 1046
Abstract
The combined effects of temperature (from −80 °C to +80 °C) and 100 kV X-ray exposure (up to 108 kGy(SiO2)) on the physical properties of Brillouin scattering and losses in three differently doped silica-based optical fibers, with varying dopant type and [...] Read more.
The combined effects of temperature (from −80 °C to +80 °C) and 100 kV X-ray exposure (up to 108 kGy(SiO2)) on the physical properties of Brillouin scattering and losses in three differently doped silica-based optical fibers, with varying dopant type and concentration (4 wt%(Ge), 10 wt%(Ge) and 1 wt%(F)), are experimentally studied in this work. The dependencies of Brillouin Frequency Shifts (BFS), Radiation-Induced Attenuation (RIA) levels, Brillouin gain attenuation, Brillouin frequency temperature (CT) and strain (Cε) sensitivity coefficients are studied under X-rays in a wide temperature range [−80 °C; +80 °C]. Brillouin sensing capabilities are investigated using a Brillouin Optical Time Domain Analyzer (BOTDA), and several properties are reported: (i) similar behavior of the Brillouin gain amplitude decrease with the increase in the RIA; (ii) the F-doped and heavily Ge-doped fibers do not exhibit a temperature dependence under radiation for their responses in Brillouin gain losses. Increasing Ge dopant concentration also reduces the irradiation temperature effect on RIA. In addition, Radiation-Induced Brillouin Frequency Shift (RI-BFS) manifests a slightly different behavior for lower temperatures than RIA, presenting an opportunity for a comprehensive understanding of RI-BFS origins. Related temperature and strain sensors are designed for harsh environments over an extended irradiation temperature range, which is useful for a wide range of applications. Full article
(This article belongs to the Special Issue Optical Fibre Sensing: Recent Advances and Future Perspectives)
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10 pages, 3473 KiB  
Communication
An Axial Force Sensor Based on a Long-Period Fiber Grating with Dual-Peak Resonance
by Weixuan Luo, Ying Wang, Qiang Ling, Zuguang Guan, Daru Chen and Qiong Wu
Photonics 2023, 10(5), 591; https://doi.org/10.3390/photonics10050591 - 18 May 2023
Cited by 1 | Viewed by 994
Abstract
A high-sensitivity axial force sensor with a large measurement range based on a dual-peak long-period fiber grating (LPFG) is proposed and experimentally demonstrated. Previously, the relationship between the grating period and the dual-peak wavelengths has been investigated based on the coupled-mode theory. In [...] Read more.
A high-sensitivity axial force sensor with a large measurement range based on a dual-peak long-period fiber grating (LPFG) is proposed and experimentally demonstrated. Previously, the relationship between the grating period and the dual-peak wavelengths has been investigated based on the coupled-mode theory. In our experiment, the LPFG was fabricated in our laboratory by illuminating the fiber core with the aid of a 213 nm UV laser. The sensitivity of the proposed axial force sensor can reach −14.047 nm/N in the force range from 0.490 N to 4.508 N. Taking the advantages of a compact size, low cost, and large measurement range, our force sensor has more applicable abilities in harsh environments. Full article
(This article belongs to the Special Issue Optical Fibre Sensing: Recent Advances and Future Perspectives)
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10 pages, 2357 KiB  
Article
Quantitative Analysis of φ-OTDR Spatial Resolution Influenced by NLM Parameters
by Yunfei Chen, Shuhan Zhu, Kaimin Yu, Minfeng Wu, Lei Feng, Peibin Zhu and Wen Chen
Photonics 2023, 10(5), 529; https://doi.org/10.3390/photonics10050529 - 04 May 2023
Cited by 2 | Viewed by 1144
Abstract
Non-local mean (NLM) can significantly improve the signal-to-noise ratio (SNR), but it inevitably reduces the spatial resolution of distributed optical fiber sensors (DFOS), which hinders its practical application and the improvement of DFOS performance. In this paper, the quantitative relationship between the signal [...] Read more.
Non-local mean (NLM) can significantly improve the signal-to-noise ratio (SNR), but it inevitably reduces the spatial resolution of distributed optical fiber sensors (DFOS), which hinders its practical application and the improvement of DFOS performance. In this paper, the quantitative relationship between the signal broadening of a phase-sensitive optical time-domain reflectometer (φ-OTDR) and the NLM parameters is analyzed to identify the cause and extent of the spatial resolution degradation. The denoising results for the mimic periodic and φ-OTDR vibration signals indicate that the signal broadening is mainly due to the similarity window size of NLM, and the signal amplitude reduction is caused by the Gaussian smoothing parameter. Compared with the reference signals, the signal broadening of the mimic and φ-OTDR signals after denoising are 2.56% and 2.74%, respectively, which is much less than the previous results. The signal amplitude is reduced by 9.25% and 13.62%, respectively. This work promotes the application of NLM and improves the performance of DFOS. Full article
(This article belongs to the Special Issue Optical Fibre Sensing: Recent Advances and Future Perspectives)
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