Results 41 to 50 of about 14,944 (303)

Nonlinear parity-time-symmetric transition in finite-size optical couplers

, 2015
Parity-time-symmetric ($\mathcal{PT}$-symmetric) optical waveguide couplers offer a great potential for future applications in integrated optics.
Litchinitser, Natalia M., Ma, Chicheng, Walasik, Wiktor   +2 more
core   +1 more source

Design of a Low-Cost Microstrip Directional Coupler with High Coupling for a Motion Detection Sensor [PDF]

, 2018
A coupled-line coupler based on the asymmetric cascade connection of two coupled line sections is used to achieve a high coupling factor using low-cost material and technology in the X frequency band, and its performance is compared with a standard ...
Casula, GIOVANNI ANDREA, Fanti, Alessandro, Jin, Zushen, Montisci, Giorgio, Sanna, Giovanni   +4 more
core   +2 more sources

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gabor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Engineering interaction dynamics in active resonant photonic structures

APL Photonics, 2021
The collective response of a system is profoundly shaped by the interaction dynamics between its constituent elements. In physics, tailoring these interactions can enable the observation of unusual phenomena that are otherwise inaccessible in standard ...
Yuzhou G. N. Liu, Omid Hemmatyar, Absar U. Hassan, Pawel S. Jung, Jae-Hyuck Choi, Demetrios N. Christodoulides, Mercedeh Khajavikhan   +6 more
doaj   +1 more source

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

Compact Broadband Directional Couplers Using Subwavelength Gratings

IEEE Photonics Journal, 2016
We experimentally demonstrate compact broadband directional couplers using subwavelength gratings for silicon-on-insulator wafers with silicon layers of 220 nm.
Yun Wang, Zeqin Lu, Minglei Ma, Han Yun, Fan Zhang, Nicolas A. F. Jaeger, Lukas Chrostowski   +6 more
doaj   +1 more source

Ultracompact monolithic integration of balanced, polarization diversity photodetectors for coherent lightwave receivers [PDF]

, 1992
The authors have monolithically integrated an optical front-end on InP for balanced, polarization-diversity coherent lightwave reception which is only 1.3-mm long. Low on-chip insertion loss (
Andreadakis, N. C., Caneau, C., Curtis, L., Deri, R. J., Gozdz, A. S., Hawkins, R. J., Pennings, E. C. M., Scherer, A., Shah, V., Song, J.-I., Soole, J. B. D.   +10 more
core   +1 more source

A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling, Mark D. Parker, Sven Kerst, Richard A. Pasternack, Jacob Tondreau, Marjolein Breur, Gemma M. van Rooijen‐van Leeuwen, Davide Tonduti, Ettore Salsano, Alejandra Darling, Joanna A. E. van Wijk, Susanna Törnroth‐Horsefield, Marianna Bugiani, Petra J. W. Pouwels, Quinten Waisfisz, Marjo S. van der Knaap, Rogier Min   +16 more
wiley   +1 more source

Artificial Immune Network Design of Optical Multiplexers/Demultiplexers

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
An efficient design approach of directional couplers based multiplexers/demultiplexers for optical communication applications, by using an adapted artificial immune network algorithm for optimization (opt-AiNet), is presented and validated by using the ...
Carlos H. Silva-Santos, Vitaly F. Rodríguez-Esquerre, Hugo E. Hernández-Figueroa   +2 more
doaj   +1 more source

Broadband terahertz fiber directional coupler [PDF]

Optics Letters, 2010
We present the design of a short broadband fiber directional coupler for terahertz (THz) radiation and demonstrate a 3 dB coupler with a bandwidth of 0.6 THz centered at 1.4 THz. The broadband coupling is achieved by mechanically downdoping the cores of a dual-core photonic crystal fiber by microstructuring the cores.
Nielsen, Kristian, Rasmussen, Henrik K., Jepsen, Peter Uhd, Bang, Ole   +3 more
openaire   +3 more sources