Article
Engineering, Electrical & Electronic
Josep M. Fabrega, Raul Munoz, Laia Nadal, Carlos Manso, Michela Svaluto Moreolo, Ricard Vilalta, Ricardo Martinez, Francico Javier Vilchez, Diego Perez Galacho, Salvador Sales, Evangelos Grivas, Jaroslaw P. Turkiewicz, Simon Rommel, Idelfonso Tafur Monroy
Summary: An experiment showcasing a 5G digital fronthaul network utilizing multi-adaptive bandwidth/bitrate variable transceivers and an autonomic SDN control system for partially-disaggregated WDM/SDM. The SDN controller assigns optimal constellation based on per-subcarrier SNR to achieve EVM below 2.1%.
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
(2021)
Article
Optics
Wenqian Xu, Peiyu Wu, Qi Yao, Rongjun Zhang, Pengfei Li, Leimin Bao, Cheng Wang, Shenfei Chen, Yuhui Zhang, Yedong Shen
Summary: People spend a significant amount of time on phones, causing sleep disruption and eye fatigue. While eye protection modes claim to safeguard eye health, their effectiveness on image quality and circadian effect is examined in this study. The results show that the circadian effect is inversely proportional to color quality when switching to the eye protection mode, indicating a tradeoff between nighttime circadian effect and image quality.
Article
Engineering, Electrical & Electronic
Dan M. Marom, Yutaka Miyamoto, David T. Neilson, Ioannis Tomkos
Summary: The forthcoming capacity scaling requirements and advances in optical fiber communications bring new opportunities and challenges for exploiting the expanded spectral and spatial resources. Networks are facing tremendous traffic growth pushing existing implementations to their limits, requiring new efficient and cost-effective switching solutions for supporting future traffic growths.
PROCEEDINGS OF THE IEEE
(2022)
Article
Engineering, Electrical & Electronic
Anke Zhao, Ning Jiang, Shiqin Liu, Yiqun Zhang, Kun Qiu
Summary: A novel optical encryption scheme based on private chaotic phase scrambling is proposed in this work, which can effectively protect the security on the physical layer of optical communications. Experimental and numerical results demonstrate that the scheme can efficiently encrypt WDM signals into noise-like signals while providing low latency, high speed, and low hardware cost advantages.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Computer Science, Information Systems
Chien-Hung Yeh, Li-Hung Liu, Wen-Piao Lin, Han-Shin Ko, Yi-Ting Lai, Chi-Wai Chow
Summary: A simple self-restored WDM-PON system is proposed in order to avoid fiber link faults. Additional optical components are added to OLT, RN, and ONU to create alternative fiber paths for fault protection. Through utilizing 10 Gb/s OOK downstream and upstream wavelengths to measure BER performances, the modulation signals are ensured to meet power budget requirements under FEC levels for total insertion loss caused by various fiber links and devices.
Article
Engineering, Electrical & Electronic
Miquel Masanas, Maria C. Santos, Jeison Tabares, Victor Polo, Josep Prat
Summary: This study explores the use of wavelength shifting in an ultra-dense WDM scheme to simplify wavelength management in PONs with coherent homodyne receivers. By utilizing a dual-parallel Mach-Zehnder Modulator for data modulation and wavelength shifting, a power budget gain of 18 dB was achieved.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Oleg Sidelnikov, Alexey Redyuk, Stylianos Sygletos, Mikhail Fedoruk, Sergei Turitsyn
Summary: The study utilizes convolutional neural networks to compensate for nonlinear signal distortions in optical communication systems, optimizing algorithmic complexity to improve learning efficiency and performance.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Computer Science, Hardware & Architecture
Yaghoub Khorasani, Akbar Ghaffarpour Rahbar, Mohammad Jafari-Beyrami
Summary: Elastic optical networking with multicore fiber is a promising solution for the growing demands of Internet traffic. However, fragmentation wastes bandwidth and reduces network efficiency. This paper presents a two-dimensional metric called Golden metric and proposes the Golden-RSCA algorithm based on this metric. Performance evaluation and comparison show the efficiency of this approach.
Article
Engineering, Electrical & Electronic
Ximeng Zhang, Min Zhang, Yuchen Song, Xiaotian Jiang, Fan Zhang, Danshi Wang
Summary: In modern optical transmission systems, accurate and reliable simulation of optical fiber is crucial for various applications. Machine learning (ML) has contributed to novel developments in this field by solving the problem of slow computation. However, many ML-based optical channel models sacrifice flexibility. Deep operator network (DeepONet) is proposed as an alternative solution for multiple application scenarios.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Pengfei Zhu, Jiabin Cui, Yuefeng Ji
Summary: The paper proposes a cross-layer secure transport strategy for FlexE over WDM networks, utilizing data block permutation and multiple parallel fiber transmission to combat eavesdropping. It also explores the trade-off between resource efficiency and transport security, introducing an ant colony optimization algorithm for large scale conditions. Simulation results show the effectiveness of the strategy in defending against intruders and the superiority of the algorithm compared to traditional methods.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Jitao Gao, Elham Nazemosadat, Yi Yang, Songnian Fu, Ming Tang, Jochen Schroeder, Magnus Karlsson, Peter Andrekson
Summary: This study proposes an optical cross-connect scheme based on nonlinear optical fibers to achieve wavelength and spatial mode conversion, reducing cost and configuration complexity, which is suitable for future WDM-MDM networks.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Shimpei Shimizu, Takayuki Kobayashi, Takushi Kazama, Takeshi Umeki, Masanori Nakamura, Koji Enbutsu, Takahiro Kashiwazaki, Ryoichi Kasahara, Kei Watanabe, Yutaka Miyamoto
Summary: The optical parametric amplifier (OPA) is a promising technology for optical communications due to its wideband, high gain, and fast transient response. It enables various optical signal processing and wavelength conversion using idler light generated during amplification. A PPLN waveguide serves as the amplification medium, allowing for wideband and high-gain amplification. This paper presents the configuration and applications of a 4-port PPLN module, including wideband inline amplification demonstration and inter-band wavelength conversion between C- and S-bands.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Computer Science, Hardware & Architecture
Bing-Xi Pei, Shi Xu, Zhang Luo, Qin Wang, Ming-Che Lai, Wei-Feng He
Summary: This paper proposes a hierarchical photoelectric network with an electrical and optical interleaved packet switching scheme to achieve low latency and high throughput in high-performance computing systems. A novel electrical switch architecture is used for route computation, and a fine-grained flow control mechanism is employed. Experimental results demonstrate significant improvements in latency and throughput.
JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING
(2022)
Article
Computer Science, Information Systems
Sadia Qureshi, Robin M. Braun
Summary: This paper proposes a model to bring dynamic allocation of resources to the WDM layer using SDN, allowing optical network service providers to customize services dynamically. Performance testing shows that increasing the number of fibers in an optical cross connect with Clos fabric topology can double the latency.
Article
Engineering, Electrical & Electronic
Junfei Xia, Tongyun Li, Qixiang Cheng, Madeleine Glick, Michael Crisp, Keren Bergman, Richard Penty
Summary: Broadband access services are driving the evolution of optical access networks to a more common access platform compatible with both wired and wireless broadband services. This study proposes a reconfigurable converged optical fronthaul network using a silicon photonic switch fabric. Reconfigurable service selection is demonstrated for different switching scenarios, including wavelength selection, multicast, and space switching.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)