Optical Fiber Communications: Innovations and Challenges

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Optoelectronics".

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 7702

Special Issue Editors


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Guest Editor
Key Laboratory of All Optical Network & Advanced Telecommunication Network of EMC, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
Interests: specialty fibers and components; fiber amplifiers; fiber lasers; optical sensing

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Co-Guest Editor
Key Laboratory of All Optical Network & Advanced Telecommunication Network of EMC, Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
Interests: silicon photonics chips and optical computing; communication systems

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Co-Guest Editor
Key Laboratory of All Optical Networks and Modern Communication Networks, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China
Interests: passive and active fiber design; few-mode rare-earth (co-)doped fiber amplifiers (FM-REDFAs); optical fiber transmission; optical fiber sensors; beam mode decomposition
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Special Issue Information

Dear Colleagues,

The great advance in various emerging Internet-related technologies has led to a surge in network traffic. Due to the ever-increasing demand for higher data rates, the data transmission volume is rising exponentially, while the transmission capacity of current standard single-mode optical fiber communication system is close to the Shannon limit. The effective utilization of current bandwidth and the expansion of bandwidth resources, have become the most important focus for further improving the transmission capacity of optical fiber communication.

High-order modulation improves spectral efficiency, space division multiplexing multiplies capacity, optical fibers with novel materials and structures broaden the available bandwidth, and the successful application of these new technologies can not be separated from the comprehensive support of theories, algorithms, components, and devices.

The main aim of this Special Issue is to present the latest research achievements in the field of optical fiber communications, including theory, design, and experimental applications of multiplexing, modulation, digital signal processing, as well as special optical fibers, optical components and devices, photoelectric integration, and so forth.

The topics of interest include, but are not limited to:

  • Space division multiplexing (SDM);
  • Specialty fibers;
  • Modulation technology;
  • Optical passive devices;
  • Optical active devices;
  • Photonic/optoelectronic integration.

Dr. Jingjing Zheng
Dr. Bing Bai
Dr. Jianshuai Wang
Guest Editors

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Keywords

  • space division multiplexing (SDM)
  • specialty fibers
  • modulation technology
  • optical passive devices
  • optical active devices
  • photonic/optoelectronic integration

Published Papers (6 papers)

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Research

12 pages, 1838 KiB  
Article
Dispersive Optical Solitons with Differential Group Delay Having Multiplicative White Noise by Itô Calculus
by Elsayed M. E. Zayed, Mohamed E. M. Alngar, Reham M. A. Shohib, Anjan Biswas, Yakup Yıldırım, Luminita Moraru, Simona Moldovanu and Puiu Lucian Georgescu
Electronics 2023, 12(3), 634; https://doi.org/10.3390/electronics12030634 - 27 Jan 2023
Cited by 6 | Viewed by 989
Abstract
The current paper recovers dispersive optical solitons in birefringent fibers that are modeled by the Schrödinger–Hirota equation with differential group delay and white noise. Itô Calculus conducts the preliminary analysis. The G/G-expansion approach and the enhanced Kudryashov’s scheme gave [...] Read more.
The current paper recovers dispersive optical solitons in birefringent fibers that are modeled by the Schrödinger–Hirota equation with differential group delay and white noise. Itô Calculus conducts the preliminary analysis. The G/G-expansion approach and the enhanced Kudryashov’s scheme gave way to a wide spectrum of soliton solutions with the white noise component reflected in the phase of the soliton. Full article
(This article belongs to the Special Issue Optical Fiber Communications: Innovations and Challenges)
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9 pages, 5845 KiB  
Communication
Time Jitter Analysis of an Optical Signal Based on Gated On-Off Optical Sampling and Dual-Dirac Modeling
by Tao Huang, Zhiqiang Fan, Jun Su and Qi Qiu
Electronics 2023, 12(3), 633; https://doi.org/10.3390/electronics12030633 - 27 Jan 2023
Viewed by 923
Abstract
A time jitter analysis method for an optical signal based on gated on-off optical sampling and dual-Dirac modeling is proposed and demonstrated experimentally. The optical signal under test is firstly sampled by an optical sampling pulse train generated through the gating on-off modulation [...] Read more.
A time jitter analysis method for an optical signal based on gated on-off optical sampling and dual-Dirac modeling is proposed and demonstrated experimentally. The optical signal under test is firstly sampled by an optical sampling pulse train generated through the gating on-off modulation of a Mach–Zehnder modulator (MZM). The sampled pulse is then broadened using optical true-time delay and electrical low-pass filtering to reduce its bandwidth to match the sample rate of a low-speed electrical analog-to-digital converter (ADC), which is used to quantify the sampled pulse. An eye diagram is obtained from the quantified data and used to plot a time jitter histogram. Finally, the dual-Dirac model is introduced to analyze the time jitter histogram to obtain the total jitter (TJ), including the deterministic jitter (DJ) and random jitter (RJ). In the experiment, a 19.05 ps TJ, including a 13.20 ps DJ and a 5.85 ps RJ, is measured for a 2.5 GHz optical signal using the proposed time jitter analysis method. The results agree well with those measured with a commercial real-time oscilloscope. Full article
(This article belongs to the Special Issue Optical Fiber Communications: Innovations and Challenges)
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14 pages, 2284 KiB  
Article
Photonic Multiple Microwave Frequency Measurement System with Single-Branch Detection Based on Polarization Interference
by Wei Zhu, Jing Li, Miaoxia Yan, Li Pei, Tigang Ning, Jingjing Zheng and Jianshuai Wang
Electronics 2023, 12(2), 455; https://doi.org/10.3390/electronics12020455 - 15 Jan 2023
Cited by 1 | Viewed by 1514
Abstract
A photonic microwave frequency measurement system with single-branch detection based on polarization interference is proposed. In this scheme, a 15-line non-flat optical frequency comb (OFC) based on sawtooth signal modulation via a Mach–Zehnder modulator is generated. The intercepted microwave signal with multiple-frequency components [...] Read more.
A photonic microwave frequency measurement system with single-branch detection based on polarization interference is proposed. In this scheme, a 15-line non-flat optical frequency comb (OFC) based on sawtooth signal modulation via a Mach–Zehnder modulator is generated. The intercepted microwave signal with multiple-frequency components can be measured by frequency down-conversion with this simple structure. This system can measure the multi-tone microwave signals in real time. The single-branch detection makes the system a simple and compact structure and avoids the unbalanced variation, as in a two-branches scheme. The blind area of the system can be solved by adjusting the comb-line spacing of the OFC. A simulation is carried out and related discussion is given. The result reveals that it can measure multi-tone microwave signals with a resolution of less than 2 MHz over 0.1–12 GHz. Full article
(This article belongs to the Special Issue Optical Fiber Communications: Innovations and Challenges)
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9 pages, 3513 KiB  
Communication
Terahertz Hybrid Topological Chip for 10-Gbps Full-Duplex Communications
by Haisu Li, Yu Zhang, Yajing Liu and Shaghik Atakaramians
Electronics 2023, 12(1), 109; https://doi.org/10.3390/electronics12010109 - 27 Dec 2022
Viewed by 1314
Abstract
Terahertz photonic chips play an important role in next-generation information systems, such as high-speed inter/intrachip connections. Here we report a hybrid hollow-core terahertz topological planar waveguide where topological silicon pillars (assembled as expanded and compressed hexagonal clusters) are sandwiched between parallel gold plates. [...] Read more.
Terahertz photonic chips play an important role in next-generation information systems, such as high-speed inter/intrachip connections. Here we report a hybrid hollow-core terahertz topological planar waveguide where topological silicon pillars (assembled as expanded and compressed hexagonal clusters) are sandwiched between parallel gold plates. Assisted by numerical optimization of topological waveguide unit cells and supercells, we achieve a wide topological bandgap (relative bandwidth of 16.1%) in which two low-loss (below 0.1 dB/mm) topological pseudospin states exist and cover 81.8% of the bandgap. The dual unidirectional channel in a single waveguide path can be used for short-range (below 100 mm) 10-Gbps full-duplex on-chip transmissions under the forward error correction limit (bit error rate less than 10−3). Simulation results reveal that the communication performance of the proposed topological waveguide is largely group velocity dispersion dependent. This work may pave an avenue for high-speed integrated circuit design and applications in both electric and photonic fields. Full article
(This article belongs to the Special Issue Optical Fiber Communications: Innovations and Challenges)
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12 pages, 24525 KiB  
Communication
Eight-Wavelength-Switchable Narrow Linewidth Erbium-Doped Fiber Laser Based on Cascaded Superimposed High-Birefringence Fiber Bragg Grating
by Dongyuan Li, Ting Feng, Weiwei Sun, Shengbao Wu, Fengping Yan, Qi Li and Xiaotian Steve Yao
Electronics 2022, 11(22), 3688; https://doi.org/10.3390/electronics11223688 - 10 Nov 2022
Cited by 4 | Viewed by 1395
Abstract
A narrow-linewidth eight-wavelength-switchable erbium-doped fiber laser is proposed, and its performance is demonstrated. A cascaded superimposed high-birefringence fiber Bragg grating is used to determine the lasing wavelengths. The combination of a Fabry–Pérot filter and a single-coupler ring is adopted to achieve the single-longitudinal-mode [...] Read more.
A narrow-linewidth eight-wavelength-switchable erbium-doped fiber laser is proposed, and its performance is demonstrated. A cascaded superimposed high-birefringence fiber Bragg grating is used to determine the lasing wavelengths. The combination of a Fabry–Pérot filter and a single-coupler ring is adopted to achieve the single-longitudinal-mode (SLM) oscillation. By introducing the enhanced polarization-hole-burning effect to suppress the gain competition between different wavelength lasers, the stable lasing output is guaranteed. When the pump power is 200 mW, by adjusting the polarization controller to balance the gain and loss in the laser cavity, 24 switchable lasing modes are achieved, including 8 single-wavelength operations and 16 dual-wavelength operations with orthogonal polarization states. For single-wavelength operations, every laser is in the SLM lasing state, with a high stabilized optical spectrum, a linewidth of approximately 1 kHz, an optical signal-to-noise ratio (OSNR) as high as 73 dB, a relative intensity noise of less than −150 dB/Hz, and very good polarization characteristics. For dual-wavelength operations, the lasers also have a stable spectrum and an OSNR as high as 65 dB. The proposed fiber laser has a wide range of applications, including long-haul coherence optical communication, optical fiber sensing, and dense wavelength-division-multiplexing. Full article
(This article belongs to the Special Issue Optical Fiber Communications: Innovations and Challenges)
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8 pages, 399 KiB  
Article
Quiescent Optical Solitons with Cubic–Quartic and Generalized Cubic–Quartic Nonlinearity
by Ahmed H. Arnous, Anjan Biswas, Yakup Yıldırım, Luminita Moraru, Simona Moldovanu and Seithuti P. Moshokoa
Electronics 2022, 11(22), 3653; https://doi.org/10.3390/electronics11223653 - 08 Nov 2022
Cited by 2 | Viewed by 920
Abstract
The enhanced Kudryashov’s approach retrieves quiescent bright, dark, and singular solitons to the governing model that is considered with cubic–quartic form of self-phase modulation. The algorithm however fails to retrieve stationary solitons when the nonlinearity is the generalized version of the cubic–quartic form. [...] Read more.
The enhanced Kudryashov’s approach retrieves quiescent bright, dark, and singular solitons to the governing model that is considered with cubic–quartic form of self-phase modulation. The algorithm however fails to retrieve stationary solitons when the nonlinearity is the generalized version of the cubic–quartic form. The current analysis is conducted with a direct approach without an intermediary phase-portrait analysis as in the past. Full article
(This article belongs to the Special Issue Optical Fiber Communications: Innovations and Challenges)
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