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Fiber-Optic Transmission and Networking
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Fiber-Optic Transmission and Networking

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

Deadline for manuscript submissions: closed (15 July 2023) | Viewed by 4988

Special Issue Editor

Dr. Haroldo Takashi Hattori

E-Mail Website
Guest Editor
School of Engineering and Information Technology, The University of New South Wales, Australian Defence Force Academy, PO Box 7916, Canberra BC, ACT 2610, Australia
Interests: micro and nano-photonics; semiconductor and fibre lasers; optical fibres; opto-electronics; optical communications

Special Issue Information

Dear Colleagues,

The invention of the optical fiber has revolutionized different areas, such as optical communications and sensing. At the same time, it has led to many innovations in different devices, such as light sources (e.g., LEDs and lasers), photodetectors, optical waveguides, couplers, polarizers, and modulators. In recent years, all these inventions have gone beyond optical communications and are now applied to computers, interconnects, autonomous vehicles, and artificial intelligence. Although the devices can be applied to optical fiber communications, it would be better for them to find specific applications in sensors such as LIDARs, vision systems, autonomous vehicles, and chemical and biological sensing.

 This Special Issue invites papers that cover (but are not limited to):

  • Optical fibers
  • Light sources (lasers and LEDs)
  • Photodetectors
  • Optical devices in general
  • Optical networks and interconnects
  • Vision and imaging systems

Dr. Haroldo Takashi Hattori
Guest Editor

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. Sensors 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 2600 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.

Published Papers (3 papers)

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Research

12 pages, 3346 KiB  
Article
An Optical-Fiber-Based Key for Remote Authentication of Users and Optical Fiber Lines
by Alexander Smirnov, Mikhail Yarovikov, Ekaterina Zhdanova, Alexander Gutor and Mikhail Vyatkin
Sensors 2023, 23(14), 6390; https://doi.org/10.3390/s23146390 - 14 Jul 2023
Cited by 3 | Viewed by 1113
Abstract
We have shown the opportunity to use the unique inhomogeneities of the internal structure of an optical fiber waveguide for remote authentication of users or an optic fiber line. Optical time domain reflectometry (OTDR) is demonstrated to be applicable to observing unclonable backscattered [...] Read more.
We have shown the opportunity to use the unique inhomogeneities of the internal structure of an optical fiber waveguide for remote authentication of users or an optic fiber line. Optical time domain reflectometry (OTDR) is demonstrated to be applicable to observing unclonable backscattered signal patterns at distances of tens of kilometers. The physical nature of the detected patterns was explained, and their characteristic spatial periods were investigated. The patterns are due to the refractive index fluctuations of a standard telecommunication fiber. We have experimentally verified that the patterns are an example of a physically unclonable function (PUF). The uniqueness and reproducibility of the patterns have been demonstrated and an outline of authentication protocol has been proposed. Full article
(This article belongs to the Special Issue Fiber-Optic Transmission and Networking)
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17 pages, 3937 KiB  
Article
Brillouin Interaction between Two Optical Modes Selectively Excited in Weakly Guiding Multimode Optical Fibers
by Andrei Fotiadi, Edik Rafailov, Dmitry Korobko, Patrice Mégret, Alexander Bykov and Igor Meglinski
Sensors 2023, 23(3), 1715; https://doi.org/10.3390/s23031715 - 3 Feb 2023
Cited by 2 | Viewed by 2089
Abstract
A multimode optical fiber supports excitation and propagation of a pure single optical mode, i.e., the field pattern that satisfies the boundary conditions and does not change along the fiber. When two counterpropagating pure optical modes are excited, they could interact through the [...] Read more.
A multimode optical fiber supports excitation and propagation of a pure single optical mode, i.e., the field pattern that satisfies the boundary conditions and does not change along the fiber. When two counterpropagating pure optical modes are excited, they could interact through the stimulated Brillouin scattering (SBS) process. Here, we present a simple theoretical formalism describing SBS interaction between two individual optical modes selectively excited in an acoustically isotropic multimode optical fiber. Employing a weakly guiding step-index fiber approach, we have built an analytical expression for the spatial distribution of the sound field amplitude in the fiber core and explored the features of SBS gain spectra, describing the interaction between modes of different orders. In this way, we give a clear insight into the sound propagation effects accompanying SBS in multimode optical fibers, and demonstrate their specific contributions to the SBS gain spectrum. Full article
(This article belongs to the Special Issue Fiber-Optic Transmission and Networking)
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11 pages, 250 KiB  
Article
Protection Schemes in HPON Networks Based on the PWFBA Algorithm
by Rastislav Róka, Radek Fujdiak, Eva Holasova, Karel Kuchar, Milos Orgon and Jiri Misurec
Sensors 2022, 22(24), 9885; https://doi.org/10.3390/s22249885 - 15 Dec 2022
Cited by 4 | Viewed by 1307
Abstract
In this paper, possibilities for network traffic protection in future hybrid passive optical networks are presented, and reasons for realizing and utilizing advanced network traffic protection schemes for various network traffic classes in these networks are analyzed. Next, principles of the Prediction-based Fair [...] Read more.
In this paper, possibilities for network traffic protection in future hybrid passive optical networks are presented, and reasons for realizing and utilizing advanced network traffic protection schemes for various network traffic classes in these networks are analyzed. Next, principles of the Prediction-based Fair Wavelength and Bandwidth Allocation (PFWBA) algorithm are introduced in detail, focusing on the Prediction-based Fair Excessive Bandwidth Reallocation (PFEBR) algorithm with the Early Dynamic Bandwidth Allocation (E-DBA) mechanism and subsequent Dynamic Wavelength Allocation (DWA) scheme. For analyzing various wavelength allocation possibilities in Hybrid Passive Optical Networks (HPON) networks, a simulation program with the enhancement of the PFWBA algorithm is realized. Finally, a comparison of different methods of the wavelength allocation in conjunction with specific network traffic classes is executed for future HPON networks with considered protection schemes. Subsequently, three methods are presented from the viewpoint of HPON network traffic protection possibilities, including a new approach for the wavelength allocation based on network traffic protection assumptions. Full article
(This article belongs to the Special Issue Fiber-Optic Transmission and Networking)
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