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Sensors in Access Network

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

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 6779

Special Issue Editors


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Guest Editor
Associate Professor. Department of Telecommunications, Brno University of Technology, Technická 3082/12, 616 00 Brno, Czech Republic
Interests: fiber-optical sensors; fiber-optical networks; non-data optical transmission; optical amplifiers; optical network security; hacking of optical network infrastructure
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
Interests: sensor networks; sensor applications; optical networks
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Telecommunications, Brno University of Technology, Technicka 3082/12, 616 00 Brno, Czech Republic
Interests: optical networks; passive optical networks; simulations; RWA; photonic services; optical network security
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The 9th FOAN International Workshop on Fiber Optics in Access Networks will be held on 25–27 October 2021 in a hybrid format. The primary goal of FOAN2021 is to bring together and present the latest research in the field of fiber optics technologies. The idea behind the workshop is to create opportunities to learn new things by gathering scientists and experts from academia, industry, and operators in the field that will share their knowledge, experience, and ideas during the workshop. As a part of a special session on “Security in Communication Networks”, we will also focus on sensors. We warmly invite researchers to submit their contributions to this Special Issue. Topics for the Special Session on “Security in Communication Networks” include (but are not limited to):

security and privacy in communication networks; attacks on telecommunications and networking; physical layer security; security protocols; network intrusion detection and prevention; data leakage/loss prevention/protection; QKD and quantum-based secure communications; quantum sensing; sensors in broadband networks; IoT sensors and actuators; optical fiber sensors.

Dr. Petr Münster
Prof. Dr. Kimio Oguchi
Dr. Tomas Horvath
Guest Editors

Manuscript Submission Information

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Published Papers (2 papers)

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Research

13 pages, 4371 KiB  
Article
Image Edge Detection Methods in Perimeter Security Systems Using Distributed Fiber Optical Sensing
by Petr Dejdar, Pavel Záviška, Soběslav Valach, Petr Münster and Tomáš Horváth
Sensors 2022, 22(12), 4573; https://doi.org/10.3390/s22124573 - 17 Jun 2022
Cited by 13 | Viewed by 3011
Abstract
This paper aims to evaluate detection algorithms for perimeter security systems based on phase-sensitive optical time-domain reflectometry (Φ-OTDR). Our own designed and developed sensor system was used for the measurement. The main application of the system is in the area the [...] Read more.
This paper aims to evaluate detection algorithms for perimeter security systems based on phase-sensitive optical time-domain reflectometry (Φ-OTDR). Our own designed and developed sensor system was used for the measurement. The main application of the system is in the area the perimeter fencing intrusion detection. The system is unique thanks to the developed motherboard, which contains a field-programmable gate array (FPGA) that takes care of signal processing. This allows the entire system to be integrated into a 1U rack chassis. A polygon containing two different fence types and also cable laid underground in a plastic tube was used for testing. Edge detection algorithms using the Sobel and Prewitt operators are considered for post-processing. The comparison is made based on the signal-to-noise ratio (SNR) values calculated for each event. Results of algorithms based on edge detection methods are compared with the conventional differential method commonly used in Φ-OTDR systems. Full article
(This article belongs to the Special Issue Sensors in Access Network)
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15 pages, 1480 KiB  
Article
Physical Layer Components Security Risks in Optical Fiber Infrastructures
by Vladimir Spurny, Petr Munster, Adrian Tomasov, Tomas Horvath and Edvin Skaljo
Sensors 2022, 22(2), 588; https://doi.org/10.3390/s22020588 - 13 Jan 2022
Cited by 19 | Viewed by 3101
Abstract
Optical fiber communications are essential for all types of long- and short-distance transmissions. The aim of this paper is to analyze the previously presented security risks and, based on measurements, provide the risk level evaluation. The major risk is the possibility of inserting [...] Read more.
Optical fiber communications are essential for all types of long- and short-distance transmissions. The aim of this paper is to analyze the previously presented security risks and, based on measurements, provide the risk level evaluation. The major risk is the possibility of inserting a splitter into the optical distribution network and capturing a portion of the entire spectrum, i.e., all channels in the optical fiber. Another significant security risk is crosstalk on multiplexers in networks with wavelength division multiplexing. The paper covers the macrobend attenuation evaluation of fiber and back-reflection measurements. Based on the measurements, risks were evaluated for both point-to-point and point-to-multipoint networks and, lastly, the paper covers crosstalk measurements of an optomechanical switch. Finally, all individual risks are evaluated according to the severity, and a proposal for risk minimization is provided. Full article
(This article belongs to the Special Issue Sensors in Access Network)
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