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Optical Fiber Sensor Development and Applications

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

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 2706

Special Issue Editors


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Guest Editor
Engineering Department, Public University of Navarra, 31006 Pamplona, Spain
Interests: optical fiber sensors; sensors based on nanostructured functional coatings; wet chemistry techniques
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Nanostructured Optical Devices Laboratory, Electrical and Electronic Engineering Department, Institute of Smart Cities (ISC), Public University of Navarra, Edif. Los Tejos, Campus Arrosadía S/N, 31006, Pamplona, Spain
Interests: advanced functional coatings; optical fiber sensors; chemical sensors; layer-by-layer nanoassembly; nanoparticles
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Optical fiber sensing has attracted extensive attention in the research field due to its intrinsic properties, such as its low cost, lightweight, portability, small size, capability of multiplexing, and even remote sensing. The possibility of using several optical fiber sensor configurations (reflection, transmission) combined with the implementation of different sensing mechanisms (evanescent field, optical resonances, intensity, gratings, luminescence or interferometers) makes it possible for it to serve as a great alternative for the detection of sensing analytes. The aim of this Special Issue is to provide novel research works as well as review articles related to optical fiber development and potential applications in a wide variety of diverse disciplines, such as biological, chemical, environmental monitoring, food industry, medical, physical or safety at work, among others. In this sense, the implementation of sensitive coatings using engineering surface techniques of different nature (lithographic, chemical, or physical methods) combined with optical fiber technology enables the fabrication of highly advanced optical fiber devices with a great selectivity and sensitivity, showing a better limit of detection (LOD) toward specific sensing analytes. The topics of interest include but are not limited to the following:

  • Lab-on-fiber
  • Sensitive coatings
  • Chemical sensors
  • Biosensors
  • Physical sensors
  • Sensor materials
  • Localized surface plasmon resonance (LSPR)
  • Optical sensors

Dr. Pedro J. Rivero
Dr. Javier Goicoechea
Guest Editors

Manuscript Submission Information

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Published Papers (1 paper)

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Research

12 pages, 2920 KiB  
Article
Acousto-Optic Comb Interrogation System for Random Fiber Grating Sensors with Sub-nm Resolution
by Dragos A. Poiana, Jose A. Garcia-Souto and Xiaoyi Bao
Sensors 2021, 21(12), 3967; https://doi.org/10.3390/s21123967 - 8 Jun 2021
Cited by 4 | Viewed by 2151
Abstract
The broad-frequency response and nanometer-range displacements of ultrasound detection are essential for the characterization of small cracks, structural health monitoring and non-destructive evaluation. Those perturbations are generated at sub-nano-strain to nano-strain levels. This corresponds to the sub-nm level and, therefore, to about 0.1% [...] Read more.
The broad-frequency response and nanometer-range displacements of ultrasound detection are essential for the characterization of small cracks, structural health monitoring and non-destructive evaluation. Those perturbations are generated at sub-nano-strain to nano-strain levels. This corresponds to the sub-nm level and, therefore, to about 0.1% of wavelength change at 1550 nm, making it difficult to detect them by conventional interferometric techniques. In this paper, we propose a demodulation system to read the random fiber grating spectrum using a self-heterodyne acousto-optic frequency comb. The system uses a self-heterodyne approach to extract phase and amplitude modulated signals to detect surface acoustic waves with sub-nanometer amplitudes in the frequency domain. The method can detect acoustic frequencies of 1 MHz and the associated displacement. The system is calibrated via phase detection with a heterodyne interferometer, which has a limited frequency response of up to 200 kHz. The goal is to achieve sub-nanometer strain detection at MHz frequency with random fiber gratings. Full article
(This article belongs to the Special Issue Optical Fiber Sensor Development and Applications)
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