scholarly journals Plasmonic Conducting Metal Oxide-Based Optical Fiber Sensors for Chemical and Intermediate Temperature-Sensing Applications

2018 ◽  
Vol 10 (49) ◽  
pp. 42552-42563 ◽  
Author(s):  
Youngseok Jee ◽  
Yang Yu ◽  
Harry W. Abernathy ◽  
Shiwoo Lee ◽  
Thomas L. Kalapos ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Optical Fiber ◽  
Optical Fiber Sensors ◽  
Temperature Sensing ◽  
Intermediate Temperature ◽  
Fiber Sensors ◽  
Sensing Applications

scholarly journals Fiber Optic Gas Sensors Based on Lossy Mode Resonances and Sensing Materials Used Therefor: A Comprehensive Review

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 731
Author(s):  
Ignacio Vitoria ◽  
Carlos Ruiz Zamarreño ◽  
Aritz Ozcariz ◽  
Ignacio R. Matias
Keyword(s):  
Optical Fiber ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Optical Fiber Sensors ◽  
Industrial Sector ◽  
Fiber Sensors ◽  
Sensing Applications ◽  
Wide Range ◽  
Materials Used ◽  
Diagnostic Applications

Pollution in cities induces harmful effects on human health, which continuously increases the global demand of gas sensors for air quality control and monitoring. In the same manner, the industrial sector requests new gas sensors for their productive processes. Moreover, the association between exhaled gases and a wide range of diseases or health conditions opens the door for new diagnostic applications. The large number of applications for gas sensors has permitted the development of multiple sensing technologies. Among them, optical fiber gas sensors enable their utilization in remote locations, confined spaces or hostile environments as well as corrosive or explosive atmospheres. Particularly, Lossy Mode Resonance (LMR)-based optical fiber sensors employ the traditional metal oxides used for gas sensing purposes for the generation of the resonances. Some research has been conducted on the development of LMR-based optical fiber gas sensors; however, they have not been fully exploited yet and offer optimal possibilities for improvement. This review gives the reader a complete overview of the works focused on the utilization of LMR-based optical fiber sensors for gas sensing applications, summarizing the materials used for the development of these sensors as well as the fabrication procedures and the performance of these devices.

scholarly journals Optical Fiber Sensors Based on Microstructured Optical Fibers to Detect Gases and Volatile Organic Compounds—A Review

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2555
Author(s):  
Diego Lopez-Torres ◽  
Cesar Elosua ◽  
Francisco J. Arregui
Keyword(s):  
Volatile Organic Compounds ◽  
Optical Fiber ◽  
Organic Compounds ◽  
Optical Fibers ◽  
Direct Interaction ◽  
Optical Fiber Sensors ◽  
Fiber Sensors ◽  
Microstructured Optical Fibers ◽  
Sensing Applications ◽  
Volatile Organic

Since the first publications related to microstructured optical fibers (MOFs), the development of optical fiber sensors (OFS) based on them has attracted the interest of many research groups because of the market niches that can take advantage of their specific features. Due to their unique structure based on a certain distribution of air holes, MOFs are especially useful for sensing applications: on one hand, the increased coupling of guided modes into the cladding or the holes enhances significantly the interaction with sensing films deposited there; on the other hand, MOF air holes enhance the direct interaction between the light and the analytes that get into in these cavities. Consequently, the sensitivity when detecting liquids, gasses or volatile organic compounds (VOCs) is significantly improved. This paper is focused on the reported sensors that have been developed with MOFs which are applied to detection of gases and VOCs, highlighting the advantages that this type of fiber offers.

scholarly journals Layer-by-Layer Nano-assembly: A Powerful Tool for Optical Fiber Sensing Applications

Sensors ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 683 ◽  
Author(s):  
Pedro Rivero ◽  
Javier Goicoechea ◽  
Francisco Arregui
Keyword(s):  
Optical Fiber ◽  
Multilayer Structure ◽  
Optical Fiber Sensors ◽  
Layer By Layer ◽  
Fiber Sensors ◽  
Fiber Sensing ◽  
Sensing Applications ◽  
Assembly Method ◽  
Metal Metal ◽  
Optical Fiber Sensing

The ability to tune the composition of nanostructured thin films is a hot topic for the design of functional coatings with advanced properties for sensing applications. The control of the structure at the nanoscale level enables an improvement of intrinsic properties (optical, chemical or physical) in comparison with the traditional bulk materials. In this sense, among all the known nanofabrication techniques, the layer-by-layer (LbL) nano-assembly method is a flexible, easily-scalable and versatile approach which makes possible precise control of the coating thickness, composition and structure. The development of sensitive nanocoatings has shown an exceptional growth in optical fiber sensing applications due to their self-assembling ability with oppositely charged components in order to obtain a multilayer structure. This nanoassembly technique is a powerful tool for the incorporation of a wide variety of species (polyelectrolytes, metal/metal oxide nanoparticles, hybrid particles, luminescent materials, dyes or biomolecules) in the resultant multilayer structure for the design of high-performance optical fiber sensors. In this work we present a review of applications related to optical fiber sensors based on advanced LbL coatings in two related research areas of great interest for the scientific community, namely chemical sensing (pH, gases and volatile organic compounds detection) as well as biological/biochemical sensing (proteins, immunoglobulins, antibodies or DNA detection).

Modified Single Mode Optical Fiber Ammonia Sensors Deploying PANI Thin Films

2020 ◽  
Author(s):  
Husam Abduldaem Mohammed ◽  
Mohd Hanif Yaacob
Keyword(s):  
Thin Films ◽  
Optical Fiber ◽  
Evanescent Wave ◽  
Limit Of Detection ◽  
Optical Fiber Sensors ◽  
Fiber Sensors ◽  
Nanostructured Thin Film ◽  
Sensing Applications ◽  
Recovery Times ◽  
Ammonia Sensors

Modified optical fiber sensors received increasing attention because of their superior properties over electrical sensors. These properties include their immunity towards electromagnetic interference and the ability to be deployed in corrosive and volatile environment. Several optical fiber platforms have been developed for chemical sensing applications based on modifying optical fiber cladding layer such as etched, tapered, D-shaped and etched-tapered. The modifications purpose is to extend the evanescent wave propagating out of the core physical dimensions. Thus, evanescent wave interaction with analyte is enhanced. Modified optical transducing platforms are integrated in gas sensing applications, such as ammonia. Modified optical fiber sensors coated with nanostructured thin films have been developed and gained popularity as practical devices towards gases with low concentrations. The development and characterization of the modified SMF sensing platforms including etched, tapered and etched-tapered platforms against ammonia will be presented in this chapter. These platforms were coated with PANI nanostructured thin film. The 50 μm etched-tapered SMF coated with PANI produced response, recovery times, and sensitivity of 58 s, 475 s, and 231.5%, respectively, in the C-band range. The limit of detection of the modified fiber sensor was 25 ppm. The developed sensors exhibit good repeatability, reversibility, and selectivity.

scholarly journals Trends in the Implementation of Advanced Plasmonic Materials in Optical Fiber Sensors (2010–2020)

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 64
Author(s):  
María Elena Martínez-Hernández ◽  
Pedro J. Rivero ◽  
Javier Goicoechea ◽  
Francisco J. Arregui
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
High Performance ◽  
Optical Fiber Sensor ◽  
Cost Effective ◽  
Optical Fiber Sensors ◽  
Fiber Sensors ◽  
Plasmonic Materials ◽  
Sensing Applications ◽  
Fiber Technology

In recent years, the interaction between light and metallic films have been proven to be a highly powerful tool for optical sensing applications. We have witnessed the development of highly sensitive commercial devices based on Surface Plasmon Resonances. There has been continuous effort to integrate this plasmonic sensing technology using micro and nanofabrication techniques with the optical fiber sensor world, trying to get better, smaller and cost-effective high performance sensing solutions. In this work, we present a review of the latest and more relevant scientific contributions to the optical fiber sensors field using plasmonic materials over the last decade. The combination of optical fiber technology with metallic micro and nanostructures that allow plasmonic interactions have opened a complete new and promising field of study. We review the main advances in the integration of such metallic micro/nanostructures onto the optical fibers, discuss the most promising fabrication techniques and show the new trends in physical, chemical and biological sensing applications.

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