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Applied Sciences
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Advances in Fiber Optic Design and Optical Communication
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Advances in Fiber Optic Design and Optical Communication

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: 20 September 2024 | Viewed by 2222

Special Issue Editors

Dr. Fang Ren

E-Mail Website
Guest Editor
School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: advanced optical communication network; optical fiber design; fiber laser
Dr. Yangbo Bai

E-Mail Website
Guest Editor
School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
Interests: ultrashort pulse fiber laser; optical fiber sensing; microwave photonic signal processing

Special Issue Information

Dear Colleagues,

Optical transmission systems and networks are vital fundamentals of the worldwide communication infrastructure. The ongoing provision of new services and larger data volumes to satisfy the demands of business and research yield new challenges for optical network design. The exponential growth of data service has led researchers to explore a range of new optical fibers and related technologies to replace standard single-mode fibers of commercial fiber systems. Optical fibers, as an enabling technology for telecommunications, are proving to play a central role in a growing number of modern technologies, including applications in defense and security, sensing, automotive, and biomedicine. Therefore, this Special Issue is intended for the presentation of new ideas and experimental results in the field of fiber optic design and optical communication from design and theory to its practical use.

Dr. Fang Ren
Dr. Yangbo Bai
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. Applied Sciences 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

  • specialty optical fibers
  • fiber and integrated-photonics devices
  • fiber laser
  • long-haul transmission
  • short-haul transmission
  • SDM transmission
  • MDM transmission
  • passive devices for next-generation transmission

Published Papers (2 papers)

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Research

13 pages, 6300 KiB  
Article
Polarization Influence on Algorithms of TFBG Sensors Data Analysis for Bending Application
by Sławomir Cięszczyk and Damian Harasim
Appl. Sci. 2023, 13(21), 11701; https://doi.org/10.3390/app132111701 - 26 Oct 2023
Viewed by 441
Abstract
In this article we deal with the influence of polarization on determining the bending radius in TFBG (tilted fiber Bragg grating) sensors. The spectrum of TFBG structures changes under the influence of many factors at the same time. In the case of bending [...] Read more.
In this article we deal with the influence of polarization on determining the bending radius in TFBG (tilted fiber Bragg grating) sensors. The spectrum of TFBG structures changes under the influence of many factors at the same time. In the case of bending radius measurements, additional factors may be the temperature and polarization state of the introduced light. So far, only the cladding mode envelope algorithm has been used to determine the bending radius. An interesting issue seems to be establishing the influence of cross-sensitivity of the spectrum on changes in polarization during bending measurements. In addition to the envelope algorithm, algorithms for spectral length and average deviation from the local mean were examined. As a result of the analysis of experimental data, it was found that the level of polarization’s influence on the result may be significant in determining the bending radius. Reducing the influence of polarization can be achieved by using algorithms providing wavelength parameters. Additionally, in order to reduce the influence of polarization, we proposed the use of the PLS (partial least squares regression) algorithm for the processed spectrum. Full article
(This article belongs to the Special Issue Advances in Fiber Optic Design and Optical Communication)
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15 pages, 6812 KiB  
Article
A Weakly-Coupled Double Bow-Tie Multi-Ring Elliptical Core Multi-Mode Fiber for Mode Division Multiplexing across C+L+U Band
by Yingjuan Ci, Fang Ren, Xiao Lei, Yidan Li, Deyang Zhou and Jianping Wang
Appl. Sci. 2023, 13(10), 5855; https://doi.org/10.3390/app13105855 - 09 May 2023
Viewed by 1338
Abstract
We herein present a weakly-coupled double bow-tie multi-ring elliptical core multi-mode fiber (DBT-MREC-MMF) supporting 22 eigenmodes for mode division multiplexing across the C+L+U band. The proposed fiber introduces a multi-ring elliptical core, bow-tie air holes, and bow-tie stress-applying areas to effectively split adjacent [...] Read more.
We herein present a weakly-coupled double bow-tie multi-ring elliptical core multi-mode fiber (DBT-MREC-MMF) supporting 22 eigenmodes for mode division multiplexing across the C+L+U band. The proposed fiber introduces a multi-ring elliptical core, bow-tie air holes, and bow-tie stress-applying areas to effectively split adjacent eigenmodes. By utilizing the finite element method (FEM), we accordingly optimized the fiber to support the 22 modes under the weakly-coupled condition. We evaluated the impact of fiber parameters on the minimum effective refractive index difference (min Δneff) between adjacent eigenmodes, model birefringence (Bm), and bending loss at a wavelength of 1550 nm. Additionally, broadband performance metrics, such as effective modal index (neff), effective index difference (Δneff), effective mode area (Aeff), differential mode delay (DMD), and chromatic dispersion (D), were comprehensively studied over the entire C+L+U band, ranging from 1530 to 1675 nm. The proposed fiber is capable of supporting 22 completely separated eigenmodes with a min Δneff between adjacent eigenmodes larger than 3.089 × 10−4 over the entire C+L+U band. The proposed DBT-MREC-MMF holds great potential for use in short-haul communication systems that require MDM to improve transmission capacity and expand bandwidth. Full article
(This article belongs to the Special Issue Advances in Fiber Optic Design and Optical Communication)
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