Results 61 to 70 of about 4,096,125 (206)

Massively Degenerate Coherent Perfect Absorption in Gradient‐Index Fibers

Advanced Optical Materials, EarlyView.
A coherent perfect absorber (CPA) normally operates for only one or very few spatial modes. The CPA proposed here uses a gradient‐index (GRIN) fiber to absorb hundreds of spatial modes at once, its self‐imaging property replacing the bulky free‐space degenerate cavity of earlier designs. An analytic criterion sets how much modal degeneracy is required,
Helmut Hörner, Şahin K. Özdemir, Stefan Rotter   +2 more
wiley   +1 more source

Wavelength dependent transmission in multimode graded-index microstructured polymer optical fibers

Frontiers in Physics
Up to now, there have been no commercial simulation tools accessible for researching the transmission properties of multimode microstructured optical fibers (MOFs). In order to avoid this problem, this study uses the time-independent power flow equation (
Ana Simović, Svetislav Savović, Svetislav Savović, Zhuo Wang, Branko Drljača, Milan S. Kovačević, Ljubica Kuzmanović, Alexandar Djordjevich, Konstantinos Aidinis, Konstantinos Aidinis, Chen Chen   +10 more
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

Sequential Design of Activatable Photosensitizers for Ablation of Glioma Cells in Brain Cancer Tissues

Angewandte Chemie, EarlyView.
Gal‐SeNBD‐oleamide is an activatable photosensitizer (PS) with efficient uptake and selective, β‐galactosidase‐triggered activation in cancer cells, enabling efficient photodynamic ablation of glioma cells directly in brain tissue slices from mouse preclinical models and human glioblastoma patients.
Utsa Karmakar, Zhiming Cheng, Andrew D. M. Green, Sam Benson, Eleni Nestoros, Clarissa Lim, Justyna Cholewa‐Waclaw, Fabio de Moliner, Paula Lusarreta, Deborah Seah, Alsadeg Bilal, Neza Alfazema, Thibaud Aymoz‐Bressot, Gillian Morrison, Sonja Vermeren, Steven M. Pollard, Paul M. Brennan, Michael G. Tanner, Marc Vendrell   +18 more
wiley   +2 more sources

A Pentaradial and Bilateral Combined Photoreception System in the Sea Cucumber is Mediated by a Blue Light‐Sensitive R‐Opsin

Advanced Science, EarlyView.
The sea cucumber Holothuria leucospilota detects blue and adjacent wavelengths of light via an r‐opsin with a maximum absorption at 459 nm. In the oral tentacles, papillae, and tube feet, distinct light‐sensing structures with specialized morphologies are formed, constituting a unique pentaradial and bilateral combined photoreception system.
Jiasheng Huang, Chunhua Ren, Zhou Qin, Yimeng Cui, Bingbing Zhang, Peng Luo, Xuan Wang, Yaoqi Xie, Xin Zhang, Aifen Yan, Yang Zhang, Dingding Fan, Yang Liu, Wenjie Pan, Xiao Jiang, Lihong Yuan, Haipeng Qin, David M. Irwin, Chaoqun Hu, Yang Liu, Ting Chen   +20 more
wiley   +1 more source

Targeted Restoration of the Microbial Tryptophan Oxidative Pathway Ameliorates Autism‐Like Behavioral and Synaptic Deficits

Advanced Science, EarlyView.
ABSTRACT Autism Spectrum Disorder (ASD) is associated with gut microbiota dysbiosis, yet the contribution of specific microbial metabolic pathways remains unclear. Reanalysis of a public ASD cohort revealed reduced functional potential in microbial tryptophan oxidative metabolism.
Rui Guo, Caian He, Xiao Xiao, Jingmeng Li, Zilong Zhang, Ying He, Chuanchuan Wang, Jiale Zhao, Jun Gong, Jiarui Liang, Tian Yuan, Haiting Sun, Xuebo Liu, Chao Gao, Zhigang Liu   +14 more
wiley   +1 more source

Geometric parametric instability in periodically modulated graded-index multimode fibers [PDF]

, 2018
International audienceWe present a theoretical and numerical study of light propagation in graded-index (GRIN) mul-timode fibers where the core diameter has been periodically modulated along the propagation direction.
Conforti, M., Kudlinski, Alexandre, M. Conforti, C. Mas Arabí, A. Mussot, Mas Arabí, C., A. Kudlinski, Kudlinski, A., Mussot, A., Mas Arabi, Carlos, Mussot, Arnaud   +10 more
core   +1 more source

Recent Results From the EU POF-PLUS Project: Multi-Gigabit Transmission Over 1 mm Core Diameter Plastic Optical Fibers [PDF]

, 2011
Recent activity to achieve multi-gigabit transmission over 1 mm core diameter graded-index and step-index plastic optical fibers for distances up to 50 meters is reported in this paper.
Gaudino, R., Yang, H., R. Kruglov, Tangdiongga E., Koonen A. M. J., Kruglov R., R. Gaudino, Ziemann, O., Visani, D., Greiss, I., Yang H., VISANI, DAVIDE, Loquai S., Ouzzif, M., E. Tangdiongga, O. Ziemann, Ziemann O., Tangdiongga, E., I. Greiss, Kruglov, R., C. M. Okonkwo, S. Loquai, B. Charbonnier, Kruglov, R, Loquai, S., Visani D., Tangdiongga, E.; id_orcid, M. Ouzzif, Greiss, I, Okonkwo, C.M.; id_orcid, Charbonnier, B., A. M. J. Koonen, Charbonnier, B, Charbonnier B., Okonkwo, C.M., H. Yang, Koonen, A.M.J., Greiss I., Gaudino, Roberto, D. Visani, Ouzzif M., Okonkwo C. M.   +41 more
core   +1 more source

Photonics Breakthroughs 2025: Space-Time Wave Packets in Fibers

IEEE Photonics Journal
Space-time wave packets (STWPs) with correlated spatial and frequency degrees of freedom give rise to time-dependent spatial interference effects, enabling interesting and potentially useful dynamic evolution behaviors.
Xinzhou Su, Yingning Wang, Alan E. Willner   +2 more
doaj   +1 more source

Near-zero temperature beam expansion in nonlinear optical fibers [PDF]

APL Photonics
Multimode nonlinear systems offer a fertile platform for optical functionalities that are fundamentally inaccessible in linear or single-mode regimes, a potential revitalized in recent years by the framework of optical thermodynamics.
Georgios G. Pyrialakos, Do Hyeok Jeon, Hediyeh M. Dinani, Abraham M. Berman Bradley, Majid G. Nazarlu, Bingbin Li, Mercedeh Khajavikhan, Demetrios N. Christodoulides   +7 more
doaj   +1 more source