Results 81 to 90 of about 2,708,251 (409)

A Machine Learning Specklegram Wavemeter (MaSWave) Based on a Short Section of Multimode Fiber as the Dispersive Element

open access: yesSensors, 2023
Wavemeters are very important for precise and accurate measurements of both pulses and continuous-wave optical sources. Conventional wavemeters employ gratings, prisms, and other wavelength-sensitive devices in their design.
Ogbole C. Inalegwu   +2 more
doaj   +1 more source

125 Gbit/s discretely tunable InP-on-silicon filtered feedback laser with sub-nanosecond wavelength switching times [PDF]

open access: yes, 2018
A heterogeneously integrated InP-on-silicon fast tunable filtered feedback laser is demonstrated. The laser device consists of a main Fabry-Pérot cavity connected to an integrated arrayed waveguide grating of which the outputs form external cavities in ...
  +3 more
core   +2 more sources

Thin film wavelength converters for photonic integrated circuits

open access: yes, 2016
Quasi-phase-matched (QPM) wavelength converters are highly desirable for emerging nonlinear optics applications in photonic integrated circuits, but available waveguide and quasi-phase-matching technologies have so far constrained their realization.
L. Chang   +5 more
semanticscholar   +1 more source

Loss of primary cilia promotes EphA2‐mediated endothelial‐to‐mesenchymal transition in the ovarian tumor microenvironment

open access: yesMolecular Oncology, EarlyView.
Loss of primary cilia in endothelial cells promotes EndMT and vascular abnormalities in the ovarian tumor microenvironment through EphA2 activation. Using human samples, in vitro models, and endothelial‐specific Kif3a‐knockout mice, we show that primary cilia loss drives the acquisition of cancer‐associated fibroblast‐like phenotypes, thereby ...
Jin Gu Cho   +11 more
wiley   +1 more source

Shift in the Light Quality of Night Interruption Affects Flowering and Morphogenesis of Petunia hybrida

open access: yesPlants, 2023
Petunia hybrida Hort. “Easy Wave Pink”, a qualitative long-day plant (LDP), was investigated to study the effects of the night interruption light (NIL) provided by light-emitting diodes (LEDs) quality shifting on the morphogenesis, blooming, and ...
Yoo Gyeong Park, Byoung Ryong Jeong
doaj   +1 more source

Simultaneous Raman based Power Combining and Wavelength Conversion of High-power Fiber Lasers [PDF]

open access: yesSantosh Aparanji, V. Balaswamy, S. Arun, and V. R. Supradeepa, "Simultaneous Raman based power combining and wavelength conversion of high-power fiber lasers," Opt. Express 26, 4954-4960 (2018), 2017
We present a technique for simultaneous power-combining and wavelength-conversion of multiple fiber lasers into a single, lower wavelength in a different band through Raman-based, nonlinear power combining. We illustrate this by power combining of two independent Ytterbium lasers into a single wavelength around 1.5micron with high output powers of upto
arxiv   +1 more source

Understanding and measuring mechanical signals in the tumor stroma

open access: yesFEBS Open Bio, EarlyView.
This review discusses cancer‐associated fibroblast subtypes and their functions, particularly in relation to extracellular matrix production, as well as the development of 3D models to study tumor stroma mechanics in vitro. Several quantitative techniques to measure tissue mechanical properties are also described, to emphasize the diagnostic and ...
Fàtima de la Jara Ortiz   +3 more
wiley   +1 more source

Optical Thickness of Dielectric Layer in Solar Cell Design for Improved Efficiency: A Theoretical Insight [PDF]

open access: yesPhysics Access
This study investigates the effect of varying dielectric layer thickness on the optical properties of solar cells using MATLAB. Dielectric layers with thickness ranging from 10 to 100 nm were analyzed across 200 to 1200 nm wavelengths.
Francis Aungwa   +9 more
doaj   +1 more source

The Impact of the Wavelength and Its Transmittance on the Visual Evoked Potentials, at Baseline, and under the Effect of Six Monochromatic Filters Used for Visual Treatments

open access: yesSensors, 2023
Purpose: This is an observational, non-invasive study which measures the VEPs of twelve individuals, at baseline, and under the effect of six monochromatic filters used in visual therapy, to understand their effect on neural activity to propose ...
Danjela Ibrahimi   +4 more
doaj   +1 more source

Selecting wavelengths for least squares range estimation [PDF]

open access: yes, 2016
We consider the problem of estimating the distance, or range, between two locations by measuring the phase of multiple sinusoidal signals transmitted between the locations. Traditional estimators developed for optical interferometry include the beat wavelength and excess fractions methods.
arxiv   +1 more source

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