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Photonic Crystal Fiber Gas Sensor

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

Deadline for manuscript submissions: closed (30 June 2020) | Viewed by 14060

Special Issue Editors

Associate Professor, School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
Interests: thermofluids; mine ventilation; CFD in mining; fibre optic sensing; gas management systems
Special Issues, Collections and Topics in MDPI journals
PhD candidate, School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia
Interests: gas dynamics; optical fiber; gas sensing; renewable energy; IC engine

Special Issue Information

Dear Colleagues,

The optical and geometrical uniqueness of photonic crystal fibres (PCFs) offers a new alternative in sensing, especially in gas sensing applications. The air holes of claddings and the core of PCFs open up new opportunities for exploiting the interaction of light with gases via evanescent field effects. The different arrangements of the air holes give a high range of design flexibility to build different PCFs (i.e., hollow-core PCF, microstructure core PCF, suspended core PCF, solid core PCF, kagome PCF) that diverse the gas sensing application with optical fibres. In addition to using direct light gas overlap in the evanescent field, PCFs are being tested for different new gas sensing techniques, such as long period grating in PCF, graphene-coated tapered PCF interferometers, and pulsed photothermal interferometers. These continuous investigations are improving the performance of PCF gas sensors and establishing different application fields.

This Special Issue will focus on the latest developments of gas sensing with PCFs, covering recent technological improvements and emerging applications.

We hope that this issue will provide a useful reference and that it will encourage further research on novel technologies and sensing devices with PCFs. Topics covered include but are not limited to:

  • Modeling and numerical simulation of PCF gas sensors;
  • Fabrication technologies of PCF gas sensors;
  • Design, fabrication, and characterization of PCFs for gas sensing;
  • New concept or approach of gas sensing with PCFs;
  • Review of PCF gas sensing techniques and developments;
  • Improving the sensitivity and response time of PCF gas sensors;
  • Hollow core PCF-based gas sensing;
  • PCF grating for gas sensing;
  • Coating in PCF for gas sensing;
  • Gas flow simulation in PCF.

Dr. Saiied Aminossadati
Mr. Md. Masum Billah
Guest Editors

Manuscript Submission Information

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Published Papers (2 papers)

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Review

26 pages, 4560 KiB  
Review
Hollow-Core Photonic Crystal Fiber Gas Sensing
by Ruowei Yu, Yuxing Chen, Lingling Shui and Limin Xiao
Sensors 2020, 20(10), 2996; https://doi.org/10.3390/s20102996 - 25 May 2020
Cited by 50 | Viewed by 7895
Abstract
Fiber gas sensing techniques have been applied for a wide range of industrial applications. In this paper, the basic fiber gas sensing principles and the development of different fibers have been introduced. In various specialty fibers, hollow-core photonic crystal fibers (HC-PCFs) can overcome [...] Read more.
Fiber gas sensing techniques have been applied for a wide range of industrial applications. In this paper, the basic fiber gas sensing principles and the development of different fibers have been introduced. In various specialty fibers, hollow-core photonic crystal fibers (HC-PCFs) can overcome the fundamental limits of solid fibers and have attracted intense interest recently. Here, we focus on the review of HC-PCF gas sensing, including the light-guiding mechanisms of HC-PCFs, various sensing configurations, microfabrication approaches, and recent research advances including the mid-infrared gas sensors via hollow core anti-resonant fibers. This review gives a detailed and deep understanding of HC-PCF gas sensors and will promote more practical applications of HC-PCFs in the near future. Full article
(This article belongs to the Special Issue Photonic Crystal Fiber Gas Sensor)
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31 pages, 7504 KiB  
Review
Optical Fiber Sensors Based on Microstructured Optical Fibers to Detect Gases and Volatile Organic Compounds—A Review
by Diego Lopez-Torres, Cesar Elosua and Francisco J. Arregui
Sensors 2020, 20(9), 2555; https://doi.org/10.3390/s20092555 - 30 Apr 2020
Cited by 22 | Viewed by 5061
Abstract
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Photonic Crystal Fiber Gas Sensor)
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