Results 51 to 60 of about 344,166 (302)

Numerical Method for Coupled Nonlinear Schrödinger Equations in Few-Mode Fiber

Fibers, 2021
This paper discusses novel approaches to the numerical integration of the coupled nonlinear Schrödinger equations system for few-mode wave propagation. The wave propagation assumes the propagation of up to nine modes of light in an optical fiber. In this
Airat Zh. Sakhabutdinov, Vladimir I. Anfinogentov, Oleg G. Morozov, Vladimir A. Burdin, Anton V. Bourdine, Artem A. Kuznetsov, Dmitry V. Ivanov, Vladimir A. Ivanov, Maria I. Ryabova, Vladimir V. Ovchinnikov   +9 more
doaj   +1 more source

Mode and Wavelength-Switchable Pulsed Fiber Laser With Few-Mode Fiber Grating [PDF]

IEEE Photonics Technology Letters, 2019
We propose and demonstrate a mode and wavelength-switchable pulsed fiber laser using two-mode fiber Bragg grating (TM-FBG) as both transverse mode converter and wavelength selector. The mode-locking mechanism is based on saturable absorption of semiconductor saturable absorption mirror (SESAM).
Yu Cai, Zhiqiang Wang, Hongdan Wan, Zuxing Zhang, Lin Zhang   +4 more
openaire   +1 more source

Mode generation in elliptical core few mode fiber [PDF]

AIP Conference Proceedings, 2020
In this paper, mode generation based on an elliptical core few mode fiber (EC-FMF) is devised through an inverse function, designed using split step beam propagation method (BPM). The undesired modes from an EC-FMF are eliminated through an appended waveguide computed from the inverse phase of undesired modes.
Angela Amphawan, Tendai Masunda
openaire   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Mode-resolved nonlinear absorption characteristics of few-mode fiber-multimode fiber-few-mode fiber structures

Optics Express
We report a systematic investigation on the mode-resolved nonlinear absorption characteristics of the few-mode fiber-multimode fiber-few-mode fiber (FMF) structure. Firstly, the transmission formulas of the FMF structure are derived, demonstrating that the transmission is mode-dependent.
Jia-Wen Wu, Jia-Hao Chen, Bing-Ye Zhang, Hu Cui, Zhi-Chao Luo, Wen-Cheng Xu, Ai-Ping Luo   +6 more
openaire   +1 more source

High data rate few-mode transmission over graded-index single-mode fiber using 850 nm single-mode VCSEL.

Optics Express, 2019
A few-mode transmission system is proposed using 850 nm single-mode VCSEL based transceivers over graded-index single-mode fibers for high data rate data center applications. A graded-index single-mode fiber that supports two mode groups at 850 nm window
Kangmei Li, Xin Chen, J. Hurley, J. Stone, Ming-Jun Li   +4 more
semanticscholar   +1 more source

Humidity sensor based on a graphene oxide-coated few-mode fiber Mach-Zehnder interferometer.

Optics Express, 2020
A relative humidity sensor based on a graphene oxide-coated few-mode fiber Mach-Zehnder interferometer (MZI) is proposed in this paper. The MZI was made by splicing a segment of the few-mode fiber (FMF) between two segments of a no-core fiber (NCF) and ...
X. Fan, Q. Wang, M. Zhou, F. Liu, H. Shen, Z. Wei, F. Wang, C. Tan, H. Meng   +8 more
semanticscholar   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Few-Mode Elliptical-Core Fiber Data Transmission

IEEE Photonics Technology Letters, 2012
Spatial mode-division-multiplexing is seen as paramount to overcoming the bandwidth limitations of single-mode fiber. In this letter, spatial-multiplexing of polarization-maintaining, elliptical-core fiber is proposed using asymmetric Y-junctions. Asymmetric Y-junctions also allow for straightforward wavelength- and polarization-multiplexing. Numerical
Riesen, Nicholas, Love, John, Arkwright, John   +2 more
openaire   +3 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source