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Specialty Optical Fiber Sensors
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Specialty Optical Fiber Sensors

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

Deadline for manuscript submissions: closed (30 June 2020) | Viewed by 6666

Special Issue Editor

Dr. Georges Humbert

E-Mail Website
Guest Editor
XLIM Research Institute, UMR CNRS/University of Limoges, 123 Av. Albert Thomas, 87060 Limoges, France
Interests: specialty optical fibers; fiber sensors and biosensing; multimaterial fibers; THz fibers and components; nonlinear optics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Specialty optical fibers offer numerous possibilities for improving the performances of fiber sensors, and for developing novel sensing methods that exploit the properties of optical fibers. Photonic crystal fibers enable unique light properties and advanced light–matter interactions through disruptive fiber designs composed of in-fiber liquid/gas channels or exposed-core. Specialty optical fibers composed of very different materials offer additional possibilities for improving sensor sensitivities by exploiting the properties of inserted materials (e.g., glass, metal, semiconductor, polymer). Sensor performances are furthermore improved by applying post-processing techniques on the fibers for enhancing light–matter interactions. The associations of specialty optical fibers with robust and/or advanced sensing systems (as fiber gratings, fiber interferometers, plasmonic devices, etc.) lead to new sensing possibilities. 

The aim of this Special Issue is to collect and highlight the lasted advances in fiber sensors based on specialty optical fibers and their applications. Original research papers or review papers that focus on the design and experimental performances on the fiber sensors, as well as on their applications to interrogation and monitoring systems are welcome. 

Dr. Georges Humbert
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

  • Solid-core/hollow-core photonic crystal fibers, exposed-core fibers, suspended-core fibers
  • Multimaterial fibers, functionalized fibers, lab-in-fiber
  • Optofluidic/gas sensing platforms
  • Post-processing of specialty optical fibers
  • Bragg grating, tilted grating, long period grating
  • Surface plasmon resonance, surface enhanced Raman spectroscopy
  • Distributed, multiplexed sensing

Published Papers (2 papers)

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Research

14 pages, 2573 KiB  
Article
All-Fiber Measurement of Surface Tension Using a Two-Hole Fiber
by Jose R. Guzman-Sepulveda, Daniel A. May-Arrioja, Miguel A. Fuentes-Fuentes, Natanael Cuando-Espitia, Miguel Torres-Cisneros, Karina Gonzalez-Gutierrez and Patrick LiKamWa
Sensors 2020, 20(15), 4219; https://doi.org/10.3390/s20154219 - 29 Jul 2020
Cited by 4 | Viewed by 2499
Abstract
An all-fiber approach is presented to measure surface tension. The experimental realization relies on the use of a specialty fiber, a so-called two-hole fiber (THF), which serves a two-fold purpose: providing a capillary channel to produce bubbles while having the means to measure [...] Read more.
An all-fiber approach is presented to measure surface tension. The experimental realization relies on the use of a specialty fiber, a so-called two-hole fiber (THF), which serves a two-fold purpose: providing a capillary channel to produce bubbles while having the means to measure the power reflected at the end facet of the fiber core. We demonstrate that provided a controlled injection of gas into the hollow channels of the THF, surface tension measurements are possible by simply tracking the Fresnel reflection at the distal end of the THF. Our results show that the characteristic times involved in the bubble formation process, from where the surface tension of the liquids under test is retrieved, can be measured from the train of pulses generated by the continuous formation and detachment of bubbles. Full article
(This article belongs to the Special Issue Specialty Optical Fiber Sensors)
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11 pages, 2134 KiB  
Article
High Sensitivity Refractive Index Sensor Based on the Excitation of Long-Range Surface Plasmon Polaritons in H-Shaped Optical Fiber
by Nelson Gomez-Cardona, Erick Reyes-Vera and Pedro Torres
Sensors 2020, 20(7), 2111; https://doi.org/10.3390/s20072111 - 09 Apr 2020
Cited by 44 | Viewed by 3535
Abstract
In this paper, we propose and numerically analyze a novel design for a high sensitivity refractive index (RI) sensor based on long-range surface plasmon resonance in H-shaped microstructured optical fiber with symmetrical dielectric–metal–dielectric waveguide (DMDW). The influences of geometrical and optical characteristics of [...] Read more.
In this paper, we propose and numerically analyze a novel design for a high sensitivity refractive index (RI) sensor based on long-range surface plasmon resonance in H-shaped microstructured optical fiber with symmetrical dielectric–metal–dielectric waveguide (DMDW). The influences of geometrical and optical characteristics of the DMDW on the sensor performance are investigated theoretically. A large RI analyte range from 1.33 to 1.39 is evaluated to study the sensing characteristics of the proposed structure. The obtained results show that the DMDW improves the coupling between the fiber core mode and the plasmonic mode. The best configuration shows 27 nm of full width at half maximum with a resolution close to 1.3 × 10 − 5 nm, a high sensitivity of 7540 nm/RIU and a figure of merit of 280 RIU − 1 . Additionally, the proposed device has potential for multi-analyte sensing and self-reference when dissimilar DMDWs are deposited on the inner walls of the side holes. The proposed sensor structure is simple and presents very competitive sensing parameters, which demonstrates that this device is a promising alternative and could be used in a wide range of application areas. Full article
(This article belongs to the Special Issue Specialty Optical Fiber Sensors)
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