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Optical Fiber Sensing for Marine Environment and Marine Structural Health Monitoring

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

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 9701

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Special Issue Editors

Dr. Zhengyong Liu

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Guest Editor

1. Guangdong Provincial Key Laboratory of Optoelectronic Information Processing Chips and Systems, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
2. Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
Interests: optical fiber sensing technology; machine learning based data analysis; fiber-optic sensing system particularly for biomedical applications and ocean environment monitoring
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Dr. Wen-Bo Chen

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Guest Editor

Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China
Interests: dynamic response of marine geostructure; application of optical fiber sensing in geotechnical engineering; innovative development of testing techniques; geoenvironmental engineering

Dr. Weiqiang Feng

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Guest Editor

Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Interests: constitutive modelling of soft soil; multi-function physical modelling; consolidation and creep; optical sensing application
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The research and development of the Ocean have attracted tremendous attention from the academic researchers and industrial engineers. The ocean is an important supporting system for the human’s living environment and affects the changes of the earth's environment and climate. Therefore, the monitoring technologies of the marine information are important to understand and exploit the ocean resources. To realize this objective, various sensing technologies have been investigated, including optical fiber sensing. The research of fiber optic sensing technology and its integration with the submarine fiber optic network systems is highly desirable, which could provide new core devices for submarine observation networks. Due to the advantages of the optical fiber sensing, it is a good candidate in marine information monitoring. However, many scientific and engineering problems still exist, which are under investigations in terms of novel sensing mechanisins, new sensor designs, materials, fabrication techniques, signal analysis, optical demodulation, sensing systems, field tests, applications, multidisciplines, etc.

For this Special Issue of Sensors, we aim to present a collection of review and original research articles related to the development of optical fiber sensing techonlogies for marine information monitoring. We invite scientists and academic researchers across the globe to contribute relevant articles.

Dr. Zhengyong Liu
Dr. Weiqiang Feng
Guest Editor

Manuscript Submission Information

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Keywords

optical fiber sensing technology
marine information monitoring
structural health monitoring
fiber Bragg grating
optical fiber interferometry
specialty optical fiber
distributed optical fiber sensing
point optical fiber sensor

Published Papers (3 papers)

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Research

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10 pages, 2764 KiB

Open AccessArticle

Simultaneous Measurement of Temperature and Pressure Based on Fabry-Perot Interferometry for Marine Monitoring

by Shengqi Zhang, Yongchang Mei, Titi Xia, Zihan Cao, Zhengyong Liu and Zhaohui Li

Sensors 2022, 22(13), 4979; https://doi.org/10.3390/s22134979 - 1 Jul 2022

Cited by 15 | Viewed by 2171

Abstract

The temperature and pressure of seawater are of great importance to investigate the environmental evolution for the research of ocean science. With this regard, we proposed and experimentally demonstrated a seawater temperature and pressure sensor realized by a polyimide (PI) tube-based Fabry-Perot interferometer (FPI) together with a fiber Bragg grating (FBG). Benefiting from the higher thermo-optical coefficient and larger elasticity of polymer than the fused silica fiber, the sensitivity of the sensor is largely improved. The FBG is used to compensate the cross effect of the temperature. The measured temperature and pressure sensitivities of the sensor are 18.910 nm/°C and −35.605 nm/MPa, respectively. Furthermore, the temperature and pressure information measured by the sensor can be achieved simultaneously using the sensitivity matrix method. In addition, the proposed sensor has advantages of easy fabrication, compact size, as well as capability of multiplexing and long-distance measurement, making it competitive and promising during the marine monitoring. Full article

(This article belongs to the Special Issue Optical Fiber Sensing for Marine Environment and Marine Structural Health Monitoring)

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13 pages, 8229 KiB

Open AccessArticle

Modeling and Optimization of Laser Cladding Fixation Process for Optical Fiber Sensors in Harsh Environments

by Caixia Yang, Yuegang Tan, Yi Liu, Ping Xia, Yinghao Cui and Bo Zheng

Sensors 2022, 22(7), 2569; https://doi.org/10.3390/s22072569 - 27 Mar 2022

Cited by 6 | Viewed by 2142

Abstract

In order to overcome the shortcomings of the poor shear resistance of the bare optical fiber whose coating layer falls off due to harsh conditions, such as on aero-engines and the marine environment, the coaxial powder feeding laser cladding method (CPFLCM) is proposed to connect the optical fiber sensor and the substrate. The concentration field model of the powder flow is established in sections, the effective number model of particles and the corresponding laser attenuation rate are obtained. Through simulation, the influence of relevant parameters of laser cladding on the temperature field was analyzed, and the accurate parameters of laser cladding were optimized. Finally, the temperature rise trajectory of the substrate temperature field was verified by using the fiber grating temperature sensor. Through experiments, the quality of the molten pool and the optical transmission loss of the optical fiber sensor were analyzed, and the consistency of the simulation optimization parameters was verified. Through this paper, it can be concluded that the proposed CPFLCM can realize the effective connection of the optical fiber sensor to the substrate. It is of great significance in the application of optical fiber sensors in harsh environments of oceans and aerospace. Full article

(This article belongs to the Special Issue Optical Fiber Sensing for Marine Environment and Marine Structural Health Monitoring)

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Review

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24 pages, 4205 KiB

Open AccessReview

Review of Optical Fiber Sensors for Temperature, Salinity, and Pressure Sensing and Measurement in Seawater

by Honglin Liang, Jing Wang, Lihui Zhang, Jichao Liu and Shanshan Wang

Sensors 2022, 22(14), 5363; https://doi.org/10.3390/s22145363 - 18 Jul 2022

Cited by 27 | Viewed by 4294

Abstract

Temperature, salinity, and pressure (TSP) are essential parameters for the ocean. Optical fiber sensors (OFSs) have rapidly come into focus as an ocean detection technology in recent years due to their advantages of electromagnetic interference, light weight, low cost, and no waterproof requirement. In this paper, the most recently developed TSP sensors for single parameter and multi-parameter TSP sensing and measurement based on different OFSs are reviewed. In addition, from the practical point of view, encapsulation methods that protect fibers and maintain the normal operation of OFSs in seawater, and the response time of the OFS, are addressed. Finally, we discuss the prospects and challenges of OFSs used in marine environments and provide some clues for future work. Full article

(This article belongs to the Special Issue Optical Fiber Sensing for Marine Environment and Marine Structural Health Monitoring)

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