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Electronics
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Optical Electronic Systems, Communications and Security
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Optical Electronic Systems, Communications and Security

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Systems & Control Engineering".

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 7430

Special Issue Editors

Prof. Dr. Gennady E. Veselov

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Guest Editor
Director of the Institute of Computer Technology and Information Security, Southern Federal University, 344006 Rostov-on-Don, Russia
Interests: control theory; mechatronics; robotics systems; synergy; nonlinear dynamics
Special Issues, Collections and Topics in MDPI journals
Dr. Anton Pljonkin

E-Mail Website
Guest Editor
Institute of Computer Technologies and Information Security, Southern Federal University, 105/42 Bolshaya Sadovaya Str., 344006 Rostov-on-Don, Russia
Interests: quantum cryptography; quantum key distribution; information security; project education
Special Issues, Collections and Topics in MDPI journals
Dr. Lilia Sabantina

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Guest Editor
Junior Research Group Nanomaterias, Faculty of Engineering and Mathematics, Bielefeld University of Applied Sciences, Interaktion 1, 33619 Bielefeld, Germany
Interests: carbon nanofibers; needle-free electrospinning; mycelium Pleurotus Ostreatus /polymer nano-composites; 3D printing; 2D/ 3D design process; pattern design; fashion design; smart textiles
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Secure data transmission is a critical challenge for scientists and engineers. With the development of quantum computers, classical methods of cryptography are under threat. Today, quantum cryptography is a topical trend in secure communication systems.

The main problem in the transmission of confidential information is distributing the secret key between two remote correspondents. For each user, random string identical bits are formed, which are used as a cryptographic key. To ensure absolute secrecy in the cryptographic system, it is necessary to satisfy certain conditions: the key should be completely random, key length should be greater than or equal to the length of the encoded message, and a key can be used only once. A solution to ensure secrecy in key distribution is based on the principles of quantum cryptography and includes coding quantum state of a single particle (photon). The secrecy and the impossibility of unauthorized access to the messages are based on the laws of quantum physics, as opposed to classical methods of cryptography, which are based on mathematical patterns and potentially indecipherable.

This Special Issue invites original reviews and articles on optical electronic systems, communications, control and systems engineering, electrical and electronic engineering, nanomaterials, quantum optics in quantum cryptography, quantum protocols, optical circuits and components, vulnerabilities, and quantum key distribution systems.

Dr. Gennady E. Veselov
Dr. Anton Pljonkin
Dr. Lilia Sabantina
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Electronics is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electronics
  • optical systems
  • communications
  • control engineering
  • electrical engineering
  • nanomaterials
  • carbon
  • quantum cryptography
  • quantum protocols
  • optical circuits and components
  • vulnerabilities
  • quantum key distribution

Published Papers (3 papers)

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Research

15 pages, 2197 KiB  
Article
Implementation of Soft Decoding Mechanism for Addressing Nonlinearities in Long-Distance Optical Transmission System
by Ammar Armghan
Electronics 2022, 11(7), 1092; https://doi.org/10.3390/electronics11071092 - 30 Mar 2022
Viewed by 1112
Abstract
A soft decoding technique is discussed in this paper to improve the performance of long-distance optical networks (LDOTNs). LDOTNs are affected by phase noise and nonlinearities generated inside the fiber. The investigations of the proposed LDOTN were carried out by dual-polarization 16-quadrature amplitude [...] Read more.
A soft decoding technique is discussed in this paper to improve the performance of long-distance optical networks (LDOTNs). LDOTNs are affected by phase noise and nonlinearities generated inside the fiber. The investigations of the proposed LDOTN were carried out by dual-polarization 16-quadrature amplitude modulation (DP-16QAM), DP-64QAM over single-mode fiber (SMF) and digital signal processing (DSP) methodologies. The improved performance of the presented mechanism is discussed over SMF based on constellation shaping (CS). The CS of the presented LDOTN is then compared to the standard 16-QAM and 64-QAM using international telecommunication union-telecommunication (ITU-T) standard G-652.D and G-657.A1 SMF. The soft detecting procedure enables the LDOTNs to attain significant outcomes. Full article
(This article belongs to the Special Issue Optical Electronic Systems, Communications and Security)
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14 pages, 2789 KiB  
Article
Extending OTDR Distance Span by External Front-End Optical Preamplifier
by Adriana Lipovac, Vlatko Lipovac, Mirza Hamza and Vedran Batoš
Electronics 2021, 10(18), 2275; https://doi.org/10.3390/electronics10182275 - 16 Sep 2021
Cited by 3 | Viewed by 2672
Abstract
Optical time-domain reflectometer (OTDR) is used to characterize fiber optic links by identifying and localizing various refractive and reflective events such as breaks, splices, and connectors, and measuring insertion/return loss and fiber length. Essentially, OTDR inserts a pulsed signal into the fiber, from [...] Read more.
Optical time-domain reflectometer (OTDR) is used to characterize fiber optic links by identifying and localizing various refractive and reflective events such as breaks, splices, and connectors, and measuring insertion/return loss and fiber length. Essentially, OTDR inserts a pulsed signal into the fiber, from which a small portion that is commonly referred to as Rayleigh backscatter, is continuously reflected back with appropriate delays of the reflections expressed as the power loss versus distance, by conveniently scaling the time axis. Specifically, for long-distance events visibility and measurement accuracy, the crucial OTDR attribute is dynamic range, which determines how far downstream the fiber can the strongest transmitted optical pulse reach. As many older-generation but still operable OTDR units have insufficient dynamic range to test the far-end of longer fibers, we propose a simple and cost-effective solution to reactivate such an OTDR by inserting a low-noise high-gain optical preamplifier in front of it to lower the noise figure and thereby the noise floor. Accordingly, we developed an appropriate dynamic range and distance span extension model which provided the exemplar prediction values of 30 dB and 75 km, respectively, for the fiber under test at 1550 nm. These values were found to closely match the dynamic range and distance span extensions obtained for the same values of the relevant parameters of interest by the preliminary practical OTDR measurements conducted with the front-end EDFA optical amplifier, relative to the measurements with the OTDR alone. This preliminary verifies that the proposed concept enables a significantly longer distance span than the OTDR alone. We believe that the preliminary results reported here could serve as a hint and a framework for a more comprehensive test strategy in terms of both test diversification and repeating rate, which can be implemented in a network operator environment or professional lab. Full article
(This article belongs to the Special Issue Optical Electronic Systems, Communications and Security)
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11 pages, 6442 KiB  
Article
A Novel S-Box Dynamic Design Based on Nonlinear-Transform of 1D Chaotic Maps
by Wenhao Yan and Qun Ding
Electronics 2021, 10(11), 1313; https://doi.org/10.3390/electronics10111313 - 30 May 2021
Cited by 23 | Viewed by 2314
Abstract
In this paper, a method to enhance the dynamic characteristics of one-dimension (1D) chaotic maps is first presented. Linear combinations and nonlinear transform based on existing chaotic systems (LNECS) are introduced. Then, a numerical chaotic map (LCLS), based on Logistic map and Sine [...] Read more.
In this paper, a method to enhance the dynamic characteristics of one-dimension (1D) chaotic maps is first presented. Linear combinations and nonlinear transform based on existing chaotic systems (LNECS) are introduced. Then, a numerical chaotic map (LCLS), based on Logistic map and Sine map, is given. Through the analysis of a bifurcation diagram, Lyapunov exponent (LE), and Sample entropy (SE), we can see that CLS has overcome the shortcomings of a low-dimensional chaotic system and can be used in the field of cryptology. In addition, the construction of eight functions is designed to obtain an S-box. Finally, five security criteria of the S-box are shown, which indicate the S-box based on the proposed in this paper has strong encryption characteristics. The research of this paper is helpful for the development of cryptography study such as dynamic construction methods based on chaotic systems. Full article
(This article belongs to the Special Issue Optical Electronic Systems, Communications and Security)
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