Results 21 to 30 of about 7,172 (218)

SDM-WDM ROADM Based on Direct-Laser-Writing SDM Core Separator

IEEE Photonics Journal, 2022
Weakly-coupled space division multiplexing (SDM) techniques based on multi-core fibers (MCF) have attracted great attention for the capacity enhancement of optical interconnect systems and networks. In this paper, we propose a novel direct-laser-writing (
Yu Yang, Jiaxin Liu, Ruiting Cheng, Junchi Jia, Yuyang Gao, Lei Shen, Zhangyuan Chen, Yongqi He, Juhao Li   +8 more
doaj   +1 more source

High-Sensitive Refractive Index Sensing Enabled by Topological Charge Evolution

IEEE Photonics Journal, 2020
A high-sensitive refractive index sensor is proposed and demonstrated by utilizing merging bound states in the continuum, namely a set of integer topological charges in the momentum space.
Jiaxin Lv, Zihao Chen, Xuefan Yin, Zixuan Zhang, Weiwei Hu, Chao Peng   +5 more
doaj   +1 more source

Multiple-Ring-Core FM-EDF for Weakly-Coupled MDM Amplification With Low Differential Modal Gain

IEEE Photonics Journal, 2021
Recently weakly-coupled mode-division multiplexing (MDM) transmission systems and networks based on ultralow-modal-crosstalk few-mode fiber (FMF) have attracted much interest, for which optical amplification technologies with low modal crosstalk and two ...
Jinglong Zhu, Mingqing Zuo, Yu Yang, Dawei Ge, Lei Shen, Zhangyuan Chen, Yongqi He, Juhao Li   +7 more
doaj   +1 more source

Optical Networks

CoRR
Optical networks play a crucial role in todays digital topography, enabling the high-speed and reliable transmission of vast amounts of data over optical fibre for long distances. This paper provides an overview of optical networks, especially emphasising on their evolution with time.
Varsha Lohani, Anjali Sharma, Yatindra Nath Singh, Kumari Akansha, Baljinder Singh Heera, Pallavi Athe   +5 more
openaire   +2 more sources

Single Subcarrier Gold Sequences Modulated Timing Synchronization for Upstream OFDMA-PON

IEEE Photonics Journal, 2017
In this paper, we propose a timing synchronization scheme based on Gold sequences modulated on a single subcarrier for the orthogonal frequency-division multiple access passive optical network (OFDMA-PON).
Xizhen Peng, Jian Chen, Yingchun Li, Yingxiong Song   +3 more
doaj   +1 more source

On Hierarchical Composite Endpoints in Pediatric Cancer Supportive Care: Illustrative Examples From Two Multi‐Center Phase‐III Randomized Clinical Trials

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric supportive care clinical trials often involve multiple clinically important outcomes, complicating trial interpretation. Hierarchical composite endpoints (HCEs) provide a framework to integrate key outcomes according to clinical importance.
Willem H. Collier, Mark Zobeck, Adam J. Esbenshade, Christopher C. Dvorak, Lillian Sung, David Freyer, Sarah Alexander, Etan Orgel, Nicole J. Ullrich, Zach Prudowsky, Brian Fisher, Caitlin W. Elgarten   +11 more
wiley   +1 more source

Design of Filterless Horseshoe Networks Optimized for Interoperable Coherent Pluggable Transceivers

Photonics
The continuous growth of traffic in metro networks is increasing the need for cost-effective, scalable, and power-efficient optical solutions. Filterless optical networks (FONs) have emerged as a promising architecture for metro-aggregation and metro ...
Federica Gatti, João Pedro, Nelson Costa, Luís Cancela   +3 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Hollow-Core Fiber Properties and System-Level Specifications for Next-Generation Optical Transport Networks

Photonics
In light of the recent advances in hollow-core fiber (HCF) design and manufacturing, wide-scale deployments of this fiber type to realize next-generation optical transport networks may become viable in the foreseeable future, with benefits in terms of ...
Bruno Correia, João Pedro
doaj   +1 more source

Adaptive Probabilistic Shaping Using Polar Codes for FSO Communication

IEEE Photonics Journal, 2022
An adaptive polar coded probabilistic shaping scheme for free-space optical (FSO) communication is proposed and demonstrated to improve transmission performance.
Xiaoyu Liu, Jiafei Fang, Shilin Xiao, Lizhuo Zheng, Weisheng Hu   +4 more
doaj   +1 more source