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Applied Sciences
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Advances in Fiber Optic Sensors and Their Application
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Advances in Fiber Optic Sensors and Their Application

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 3340

Special Issue Editor

Dr. Lucia Sansone

E-Mail Website
Guest Editor
Institute of Polymers, Composites and Biomaterials (IPCB) of National Research Council (CNR), Pozzuoli, Italy
Interests: organic and inorganic materials for fiber optic sensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over the last few decades, recent advances in fiber optic technology have significantly changed the telecommunications industry. In fact, the ability to carry gigabits of information at the speed of light has increased the research potential in optical fibers. In the process of fiber optic developments, different research studies have been carried out focused on the suitable design of fibers. In particular, the ability to realize and develop fiber optic sensors that are able to displace traditional sensors for rotation, acceleration, electric and magnetic field measurement, temperature, pressure, acoustics, vibration, linear and angular position, strain, humidity, viscosity, chemical and biological measurements, and a host of other sensor applications has been enhanced. The rapidly growing interest with regard to fiber-based sensing is owed to some attractive reasons such as small size, lightweight, immunity to electromagnetic interference (EMI), passive (all-dielectric) composition, high-temperature performance, large bandwidth, high sensitivity, environmental ruggedness, and the ability of distributed sensing.

This Special Issue of the journal Applied Sciences “Advances in Fiber Optic Sensors and Their Application” aims to attract recent results in the field of fiber optic sensors—in particular, new detection mechanisms, materials, processes, and different field applications.

Our topics of interest include, but are not limited to:

  • Design and fabrication of advanced fiber optics for sensing applications;
  • Lab on fibers;
  • Micro- and nano-structured fiber optic sensors;
  • New fiber optic architecture to increase sensibility;
  • Fiber optic sensors for different field applications, i.e., mechanical, chemical, environmental, biological and medical;
  • Applications in industrial, life sciences, oil and gas, civil engineering, materials and defense;
  • Fiber optic sensor integration architectures, packaging, and long-term reliability;
  • Fiber optic sensors in green energy;
  • Fiber optic sensors in battery;
  • Fiber optic sensors recovery materials;
  • Fiber optic biosensors.

Dr. Lucia Sansone
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. Applied Sciences 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 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

  • fiber optic sensors
  • detection mechanisms
  • materials
  • applications
  • sensitivity
  • limit of detection
  • sensing

Published Papers (2 papers)

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Research

8 pages, 1560 KiB  
Article
Simultaneous Measurement of Refractive Index and Flow Rate Using a Co2+-Doped Microfiber
by Da Liu, Ran Gao, Zhipei Li and Anle Qi
Appl. Sci. 2021, 11(22), 10525; https://doi.org/10.3390/app112210525 - 09 Nov 2021
Viewed by 1136
Abstract
This paper has proposed and experimentally demonstrated an integrated Co2+-doped microfiber Bragg grating sensor (Co-MFBGS) that can measure the surrounding liquid refractive index (LRI) and liquid flow rate (LFR) simultaneously. The Co-MFBGS provides well-defined resonant modes of core and cladding in [...] Read more.
This paper has proposed and experimentally demonstrated an integrated Co2+-doped microfiber Bragg grating sensor (Co-MFBGS) that can measure the surrounding liquid refractive index (LRI) and liquid flow rate (LFR) simultaneously. The Co-MFBGS provides well-defined resonant modes of core and cladding in the reflection spectrum. By monitoring the wavelength of the cladding mode, the LRI can be measured; meanwhile, by monitoring the wavelength of the core mode caused by the heat exchange, the LFR can be measured. The LRI and LFR can be distinguished by the wavelength separation between cladding mode and core mode. The experimental results show that in aqueous glycerin solution, the maximum measurement sensitivity for LRI detection is −7.85 nm/RIU (refractive index unit), and the LFR sensitivity is −1.93 nm/(μL/s) at a flow rate of 0.21 μL/s. Full article
(This article belongs to the Special Issue Advances in Fiber Optic Sensors and Their Application)
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10 pages, 2261 KiB  
Article
Design of Fiber-Tip Refractive Index Sensor Based on Resonant Waveguide Grating with Enhanced Peak Intensity
by Yicun Yao, Yanru Xie, Nan-Kuang Chen, Ivonne Pfalzgraf, Sergiy Suntsov, Detlef Kip and Yingying Ren
Appl. Sci. 2021, 11(15), 6737; https://doi.org/10.3390/app11156737 - 22 Jul 2021
Viewed by 1582
Abstract
Resonant waveguide gratings (RWG) are widely used as on-chip refractometers due to their relatively high sensitivity to ambient refractive index changes, their possibility of parallel high-throughput detection and their easy fabrication. In the last two decades, efforts have been made to integrate RWG [...] Read more.
Resonant waveguide gratings (RWG) are widely used as on-chip refractometers due to their relatively high sensitivity to ambient refractive index changes, their possibility of parallel high-throughput detection and their easy fabrication. In the last two decades, efforts have been made to integrate RWG sensors onto fiber facets, although practical application is still hindered by the limited resonant peak intensity caused by the low coupling efficiency between the reflected beam and the fiber mode. In this work, we propose a new compact RWG fiber-optic sensor with an additional Fabry-Pérot cavity, which is directly integrated onto the tip of a single-mode fiber. By introducing such a resonant structure, a strongly enhanced peak reflectance and improved figure of merit are achieved, while, at the same time, the grating size can be greatly reduced, thus allowing for spatial multiplexing of many sensors on a tip of a single multi-core fiber. This paves the way for the development of probe-like reflective fiber-tip RWG sensors, which are of great interest for multi-channel biochemical sensing and for real-time medical diagnostics. Full article
(This article belongs to the Special Issue Advances in Fiber Optic Sensors and Their Application)
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