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Applications of Optical Fiber Sensors and Measurement Systems
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Applications of Optical Fiber Sensors and Measurement Systems

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Optical Sensors".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 7123

Special Issue Editor

Prof. Dr. Ciming Zhou

E-Mail Website
Guest Editor
National Engineering Research Center of Fiber Optic Sensing Technology and Networks, Wuhan 430070, China
Interests: fiber optic sensing network; fiber Bragg grating; weak signal detection

Special Issue Information

Dear Colleagues,

In comparison to conventional sensors, optical fiber sensors, characterized by their small size, light weight, resistance to harsh environments, and immunity to electromagnetic interference, have undergone tremendous development in recent decades. Due to the excellent performance of optical fiber sensors, they have partially replaced traditional sensors in monitoring and measurement applications, with robust physical parameters, high precision and optimal reliability in extreme environments.

With increasingly advanced research, innovative fiber sensing technologies have been maturely utilized in various applications, such as industrial control, bioscience, energy, national defense, construction, traffic inspection, etc., Particularly, the progress achieved in relation to innovative optical fiber sensors, including principles and methods, and the realities of measurement systems, means that they can likely be widely utilized in unexpected areas in the future.

Based on the progress of the research and development of optical fiber sensing technologies, we hope to identify and collect novel views and concepts in order to expand potential applications, improve accuracy, achieve optimal performance, and make optical fiber sensor systems easy to operate and maintain. This Special Issue will focus on the innovations of fiber sensing technologies. Thus papers related to the following topics are encouraged; however, this list is by no means exhaustive.

Topics of Interest

  1. Principles and methods for innovative optical fiber sensing techniques;
  2. Innovative optical fiber sensors;
  3. Advanced optical fiber measurement systems;
  4. Innovative optical fiber sensors for physical, chemical, medical and biological applications;
  5. Applications of optical fiber sensors and systems in extreme environments.

Prof. Dr. Ciming Zhou
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. Sensors is an international peer-reviewed open access semimonthly 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 2600 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 sensors
  • distributed sensors
  • sensor applications
  • monitoring and measurement
  • optical fiber sensing systems.

Published Papers (4 papers)

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Research

6 pages, 1805 KiB  
Communication
Epoxy-Coated Side-Polished Fiber-Optic Temperature Sensor for Cryogenic Conditions
by Umesh Sampath and Minho Song
Sensors 2023, 23(5), 2850; https://doi.org/10.3390/s23052850 - 6 Mar 2023
Viewed by 1473
Abstract
We propose coating side-polished optical fiber (SPF) with epoxy polymer to form a fiber-optic sensor for cryogenic temperature measuring applications. The thermo-optic effect of the epoxy polymer coating layer enhances the interaction between the SPF evanescent field and surrounding medium, considerably improving the [...] Read more.
We propose coating side-polished optical fiber (SPF) with epoxy polymer to form a fiber-optic sensor for cryogenic temperature measuring applications. The thermo-optic effect of the epoxy polymer coating layer enhances the interaction between the SPF evanescent field and surrounding medium, considerably improving the temperature sensitivity and robustness of the sensor head in a very low-temperature environment. In tests, due to the evanescent field–polymer coating interlinkage, transmitted optical intensity variation of 5 dB and an average sensitivity of −0.024 dB/K were obtained in the 90–298 K range. Full article
(This article belongs to the Special Issue Applications of Optical Fiber Sensors and Measurement Systems)
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10 pages, 2946 KiB  
Article
Development of an Active Optical Lens for Arc Flashing Detection
by Paweł Awramiuk, Karolina Sadowska, Jarosław Wiater, Dariusz Sajewicz, Marcin Kochanowicz, Wojciech Walendziuk and Jacek M. Żmojda
Sensors 2023, 23(5), 2629; https://doi.org/10.3390/s23052629 - 27 Feb 2023
Cited by 1 | Viewed by 1919
Abstract
This paper contains the design of active optical lenses used for the detection of arc flashing emissions. The phenomenon of an arc flashing emission and its characteristics were contemplated. Methods of preventing these emissions in electric power systems were discussed as well. The [...] Read more.
This paper contains the design of active optical lenses used for the detection of arc flashing emissions. The phenomenon of an arc flashing emission and its characteristics were contemplated. Methods of preventing these emissions in electric power systems were discussed as well. The article also includes a comparison of commercially available detectors. An analysis of the material properties of fluorescent optical fiber UV-VIS-detecting sensors constitutes a major part of the paper. The main purpose of the work was to make an active lens using photoluminescent materials, which can convert ultraviolet radiation into visible light. As part of the work, active lenses with materials such as Poly(methyl 2-methylpropenoate) (PMMA) and phosphate glass doped with lanthanides, such as terbium (Tb3+) and europium (Eu3+) ions, were analyzed. These lenses were used to make optical sensors, which were supported by commercially available sensors in their construction. Full article
(This article belongs to the Special Issue Applications of Optical Fiber Sensors and Measurement Systems)
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11 pages, 4647 KiB  
Article
A High-Sensitivity Dual-Axis Accelerometer with Two FP Cavities Assembled on Single Optical Fiber
by Bolun Zheng, Hanjie Liu, Zhen Pan, Xi Chen, Lixiong Wang and Dian Fan
Sensors 2022, 22(24), 9614; https://doi.org/10.3390/s22249614 - 8 Dec 2022
Viewed by 1657
Abstract
In this paper, a dual-axis Fabry–Pérot (FP) accelerometer assembled on single optical fiber is proposed. The sensor is equipped with a special beam-splitting prism to split the light into two perpendicular directions (the X- and Y-axes); the prism surface coated with semi-permeable film [...] Read more.
In this paper, a dual-axis Fabry–Pérot (FP) accelerometer assembled on single optical fiber is proposed. The sensor is equipped with a special beam-splitting prism to split the light into two perpendicular directions (the X- and Y-axes); the prism surface coated with semi-permeable film and the reflective sheet on the corresponding Be-Cu vibration-sensitive spring form two sets of FP cavities of different sizes. When the Be-Cu spring with a proof mass (PM) is subjected to the vibration signal, the cavity length of the corresponding FP cavity is changed and the interference signal returns to the collimator through the original path of the prism. After bandpass filtering and demodulation, the two cavity lengths are obtained, and the acceleration measurement in dual-axis directions is completed. The resonant frequency of the proposed dual-axis fiber optic accelerometer is around 280 Hz. The results of the spectral measurements show 3.93 μm/g (g = 9.8 m/s2: gravity constant) and 4.19 μm/g for the applied acceleration along the X- and Y-axes, respectively, and the cross-axis sensitivity is below 5.1%. Within the angle range of 180°, the maximum error of measured acceleration is less than 3.77%. The proposed fiber optic dual-axis FP accelerometer has high sensitivity and strong immunity to electromagnetic interference. The size of the sensor mainly depends on the size of the prism, which is easy to reduce and mass produce. Moreover, this FP construction method has high flexibility and development potential. Full article
(This article belongs to the Special Issue Applications of Optical Fiber Sensors and Measurement Systems)
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13 pages, 2445 KiB  
Communication
Multicore Fiber Bending Sensors with High Sensitivity Based on Asymmetric Excitation Scheme
by Lina Suo, Ya-Pei Peng and Nan-Kuang Chen
Sensors 2022, 22(15), 5698; https://doi.org/10.3390/s22155698 - 29 Jul 2022
Cited by 2 | Viewed by 1573
Abstract
Bending sensing was realized by constructing a tapered four-core optical fiber (TFCF) sensor. The four-core fiber (FCF) between the fan-in and fan-out couplers was tapered and the diameter became smaller, so that the distance between the four cores arranged in a square became [...] Read more.
Bending sensing was realized by constructing a tapered four-core optical fiber (TFCF) sensor. The four-core fiber (FCF) between the fan-in and fan-out couplers was tapered and the diameter became smaller, so that the distance between the four cores arranged in a square became gradually smaller to produce supermodes. The two ends of the TFCF were respectively connected to the fan-in and fan-out couplers so that the individual cores in the FCF could link to the separate single-mode fibers. A broadband light source (superluminescent diodes (SLD)) spanning 1250–1650 nm was injected into any one of the four cores, and the orientation was thus determined. In the tapering process, the remaining three cores gradually approached the excitation core in space to excite several supermodes based on the tri-core structure first, and then transited to the quadruple-core structure. The field distributions of the excited supermodes were asymmetric due to the corner-core excitation scheme, and the interference thus resulted in a higher measurement sensitivity. When the diameter of the TFCF was 7.5 μm and the tapered length was 2.21 mm, the sensitivity of the bending sensor could reach 16.12 nm/m−1. Full article
(This article belongs to the Special Issue Applications of Optical Fiber Sensors and Measurement Systems)
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