Results 31 to 40 of about 5,046,429 (305)

Hollow core fibers for optical amplification [PDF]

Optics Letters, 2019
Hollow core optical fibers are normally passive light transport components. In contrast, within this Letter, we numerically investigate the possibility of using them as optical amplifiers, through the adoption of a novel fiber structure. We show that optical amplification can be achieved in hollow core fibers, where the cladding region is partially ...
Belardi, Walter, Sazio, Pier, Bigot, Laurent   +2 more
openaire   +6 more sources

Nanomechanical optical fiber with embedded electrodes actuated by joule heating

, 2014
Nanomechanical optical fibers with metal electrodes embedded in the jacket were fabricated by a multi-material co-draw technique. At the center of the fibers, two glass cores suspended by thin membranes and surrounded by air form a directional coupler ...
Martha Segura, Nicholas White, Feng, Xian, Lian, Zhenggang, Podoliak, Nina, Horak, Peter, Nina Podoliak, Peter Horak, Segura, Martha, White, Nicholas, Zhenggang Lian, Xian Feng   +11 more
core   +1 more source

Femtosecond Laser Structuring in Optical Fiber and Transparent Films

MATEC Web of Conferences, 2013
Femtosecond laser processing is optimized for writing optical circuits, optical resonators, and microfluidic devices inside the cladding of single-mode optical fiber that couple efficiently with the fiber core waveguide.
Herman Peter R., Cheng Kyle H. Y., Grenier Jason R., Haque Moez, Lee Kenneth K.C.   +4 more
doaj   +1 more source

Refractive Index Sensing Using Helical Broken-Circular-Symmetry Core Microstructured Optical Fiber

Sensors, 2022
Helical twist provides an additional degree of freedom for controlling light in optical waveguides, expanding their applications in sensing. In this paper, we propose a helical broken-circular-symmetry core microstructured optical fiber for refractive ...
Mingjie Cui, Zhuo Wang, Changyuan Yu
doaj   +1 more source

Dispersion controlled highly nonlinear fibers for all optical processing at telecoms wavelengths [PDF]

, 2010
We review our recent progress in the development of lead silicate glass fibers with high nonlinearity and tailored near-zero dispersion at telecommunication wavelengths, encompassing holey, all-solid microstructured and W-type fiber designs.
Shi, Jindan, Ponzo, Giorgio M., David J. Richardson, Horak, Peter, Richardson, David J., Xian Feng, Marco Petrovich, Francesca Parmigiani, Giorgio M. Ponzo, Camerlingo, Angela, Parmigiani, Francesca, Feng, Xian, Periklis Petropoulos, Angela Camerlingo, Jindan Shi, Petropoulos, Periklis, Peter Horak, Petrovich, Marco, Wei H. Loh, Poletti, Francesco, Loh, Wei H., Francesco Poletti   +21 more
core   +1 more source

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

FEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain, Elise Buret, Le Hoang Thanh Nguyen, Marion Cocheteux, Nicolas Touya, Mélanie Dhayer, Romain Dubois, Frank Lafont, Sebastien Janel, Patrice Maboudou, Steve Lancel, Philippe Marchetti   +11 more
wiley   +1 more source

In situ observation of modulated light emission of fiber fuse synchronized with void train over hetero-core splice point. [PDF]

PLoS ONE, 2008
BACKGROUND: Fiber fuse is a process of optical fiber destruction under the action of laser radiation, found 20 years ago. Once initiated, opical discharge runs along the fiber core region to the light source and leaves periodic voids whose shape looks ...
Shin-ichi Todoroki
doaj   +1 more source

Ultrafast all-optical modulation in silicon optical fibers [PDF]

, 2011
Degenerate and non-degenerate two-photon absorption based modulation is demonstrated in a hydrogenated amorphous silicon core optical fiber.
Day, T.D., Peacock, A.C., Healy, Noel, J. V. Badding, Sazio, P.J.A., P. J. A. Sazio, N. Healy, Sparks, J.R., A. C. Peacock, J. R. Sparks, Mehta, P., Badding, J.V., P. Mehta, T. D. Day   +13 more
core   +1 more source

MOGAD Is the Most Common Cause of Isolated Optic Neuritis in Children

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives The study aimed to characterize the clinical features, etiologies, and outcomes of isolated, first‐time pediatric ON in the post‐MOG‐IgG era. Methods This was a single‐center retrospective cohort study at Texas Children's Hospital of patients diagnosed with first‐time ON between 2018–2024, with follow‐up data collected through 2025.
Chaitanya Aduru, Akansha Chandrasekar, Kyla Blasingame, Jonathan Rosen, Jesse M. Levine, Karla Salazar, Madhuri Chilakapati, Rod Foroozan, Victoria Hardwick, Jonathan M. Yarimi, Nikita Shukla, Timothy E. Lotze, Kristen S. Fisher, Alexander J. Sandweiss   +13 more
wiley   +1 more source

Effects of Add‐On Icosapent Ethyl With Standard Treatment on Functional Outcomes and Inflammatory Biomarkers in Acute Ischemic Stroke: A Blinded Randomized Controlled Trial

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Ischemic stroke, a major cause of mortality and long‐term disability, results from the abrupt cessation of cerebral blood flow due to vascular occlusion or rupture. Icosapent Ethyl (EPA‐EE), approved for hypertriglyceridemia, has anti‐inflammatory and antithrombotic properties that may lessen ischemic damage.
Mitra Mahmoudi Meymand, Seyed Hossein Aghamiri, Saeed Mohmammad Soleymani, Shadiyeh Bararpoor Poshkohi, Samaneh Masoudi, Hadi Esmaily   +5 more
wiley   +1 more source