Results 101 to 110 of about 220,476 (294)

Characterization of Clinical Phenotype to Glial Fibrillary Acidic Protein Concentrations in Alexander Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine the concentration of glial fibrillary acidic protein (GFAP) in cerebrospinal fluid (CSF) and plasma in Alexander disease (AxD) and whether GFAP levels are predictive of disease phenotypes. Methods CSF and plasma were collected (longitudinally when available) from AxD participants and non‐AxD controls.
Amy T. Waldman, Asako Takanohashi, Joshua Y. Joung, Geraldine W. Liu, Kaley Arnold, Amy Pizzino, Walter Faig, Sarah Woidill, Sona Narula, Adeline L. Vanderver   +9 more
wiley   +1 more source

Fully integrated optical isolators for space division multiplexed (SDM) transmission

APL Photonics, 2019
A micro-optic collimator assembly represents an important platform for the realization of many commonly used fiber optic components and devices including optical isolators, circulators, gain flattening filters, and so on.
Yongmin Jung, Andrew Wood, Saurabh Jain, Yusuke Sasaki, Shaif-Ul Alam, David J. Richardson   +5 more
doaj   +1 more source

Intermodal Four-Wave-Mixing and Parametric Amplification in km-long Fibers

, 2017
We theoretically and numerically investigate intermodal four-wave-mixing in km-long fibers, where random birefringence fluctuations are present along the fiber length. We identify several distinct regimes that depend on the relative magnitude between the
Fatome, Julien, Guasoni, Massimiliano, Horak, Peter, Parmigiani, Francesca, Richardson, David J.   +4 more
core   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source

Few-Mode Fiber Coupled Superconducting Nanowire Single-Photon Detectors for Photon Efficient Optical Communications [PDF]

The NASA Glenn Research Center's development of a high-photon efficiency real-time optical communications ground receiver has added superconducting nanowire single-photon detectors (SNSPDs) coupled with few-mode fibers (FMF).
Katz, Evan J., Nappier, Jennifer M., Tedder, Sarah A., Vyhnalek, Brian E.   +3 more
core   +1 more source

Finite element analysis of photonic crystal fibers [PDF]

, 2005
A finite-element-based vectorial optical mode solver, furnished with Bayliss-Gunzburger-Turkel-like transparent boundary conditions, is used to rigorously analyze photonic crystal fibers (PCFs).
Groesen, E. van, Hoekstra, H.J.W.M., Uranus, H.P.   +2 more
core   +2 more sources

LCoS-based mode shaper for few-mode fiber

Optics Express, 2013
Spatial light modulation can be used to address specific fiber modes, as required in mode-division multiplexed systems. We theoretically compare phase-only spatial light modulation to a combination of amplitude and phase spatial light modulation in terms of insertion loss and crosstalk for a fiber supporting 11 LP modes.
Johannes, von Hoyningen-Huene, Roland, Ryf, Peter, Winzer   +2 more
openaire   +2 more sources

Structure–Function Decoupling of the Sensorimotor and Default Mode Networks in Black Americans With MS

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Objectives Multiple sclerosis (MS) exhibits racially disparate rates of disease progression. Black people with MS (B‐PwMS) experience a more severe disease course than non‐Hispanic White people with MS (NHW‐PwMS). Here we investigated structural and functional connectivity as well as structure–function decoupling in the ...
Emilio Cipriano, Giacomo Boffa, Maria Petracca, Marta Ponzano, Nicole Graziano, Claire Wigley, Claire Riley, Jonathan Howard, Pietro Bontempi, Sylvia Klineova, Fred Lublin, Matilde Inglese   +11 more
wiley   +1 more source

Optical Nanofibers: a new platform for quantum optics

, 2017
The development of optical nanofibers (ONF) and the study and control of their optical properties when coupling atoms to their electromagnetic modes has opened new possibilities for their use in quantum optics and quantum information science.
Albrecht, Alton, Arora, Baden Fuller, Bajcsy, Bilodeau, Birks, Birks, Blais, Bliokh, Blow, Bonifacio, Brambilla, Béguin, Calajó, Carmichael, Chang, Chang, Chang, Chen, Cho, Corzo, Daly, Daly, Das, Dawkins, Deutsch, Dimmick, Ding, Ding, Domokos, Duan, Ebongue, Eldredge, Erikson, Fang, Fatemi, Fatemi, Fatemi, Fenton, Fleischhauer, Foot, Frawley, Frawley, Fujiwara, Fujiwara, Garcia-Fernandez, Gardiner, Ghosh, Gibbs, Goban, Goban, Goban, Golla, Gouraud, Grießer, Grimm, Gripp, Groblacher, Grover, Guimond, Hafezi, Haroche, Haroche, Hendrickson, Heugel, Hinds, Hoffman, Hoffman, Hoffman, Holzmann, Hood, Hétet, Jones, Jones, Junge, Kakarantzas, Kao, Kao, Kato, Kbashi, Keloth, Kim, Kimble, Kimble, Kimble, Klimov, Knight, Kumar, Kumar, Kumar, Kurizki, Lacroûte, Lambelet, Lax, Le Kien, Le Kien, Le Kien, Le Kien, Le Kien, Le Kien, Le Kien, Le Kien, Le Kien, Lee, Lindner, Lodahl, Lodahl, Louyer, Lugiato, Luxmoore, Lvovsky, Madsen, Maimaiti, Makhlin, Marcuse, Marcuse, Minogin, Mitsch, Morrissey, Morrissey, Nagai, Nayak, Nayak, Nayak, Nayak, Nayak, Nayak, Nayak, Paulisch, Petersen, Phelan, Pichler, Pittman, Purcell, Qi, Quan, Ramos, Ravets, Ravets, Reiserer, Reitz, Reitz, Ritsch, Russell, Russell, Russell, Sadgrove, Safronova, Sagué, Sagué, Sanchez-Mondragon, Sayrin, Sayrin, Scheucher, Schlosser, Schneeweiss, Schröder, Semenova, Shomroni, Snyder, Solano, Solano, Solano, Spillane, Spillane, Sprague, Stiebeiner, Stobińska, Streed, Sumetsky, Sumetsky, Szczurowski, Sørensen, Sørensen, Tanji-Suzuki, Tey, Thompson, Tong, Venkataraman, Verhart, Vetsch, Vetsch, Wallraff, Ward, Ward, Warken, Wineland, Wuttke, Wuttke, Xiang, Yalla, Yariv, Ye, Yokota, Yu   +195 more
core   +1 more source

Monolithic mode-selective few-mode multicore fiber multiplexers

Scientific Reports, 2017
AbstractWith the capacity limits of standard single-mode optical fiber fast approaching, new technologies such as space-division multiplexing are required to avoid an Internet capacity crunch. Few-mode multicore fiber (FM-MCF) could allow for a two orders of magnitude increase in capacity by using the individual spatial modes in the different cores as ...
Riesen, N., Gross, S., Love, J., Sasaki, Y., Withford, M.   +4 more
openaire   +5 more sources