Results 41 to 50 of about 3,214,955 (326)

On-sky single-mode fiber coupling measurements at the Large Binocular Telescope [PDF]

Astronomical Telescopes + Instrumentation, 2016
The demonstration of efficient single-mode fiber (SMF) coupling is a key requirement for the development of a compact, ultra-precise radial velocity (RV) spectrograph.
Andrew J. Bechter, J. Crass, Ryan Ketterer, J. Crepp, R. Reynolds, Eric B. Bechter, P. Hinz, F. Pedichini, M. Foley, E. Runburg, Eleanya Onuma, S. Gaudi, G. Micela, I. Pagano, C. Woodward   +14 more
semanticscholar   +1 more source

High-Efficiency Coupling Method of the Gradient-Index Fiber Probe and Hollow-Core Photonic Crystal Fiber

Applied Sciences, 2019
A high-efficiency coupling method using the gradient-index (GRIN) fiber probe and hollow-core photonic crystal fiber (HC-PCF) is proposed to improve the response time and the sensitivity of gas sensors. A coupling efficiency model of the GRIN fiber probe
Chi Wang, Yue Zhang, Jianmei Sun, Jinhui Li, Xinqun Luan, Anand Asundi   +5 more
doaj   +1 more source

Cascading nonlinearities in an organic single crystal core fiber: The Cerenkov regime [PDF]

, 1994
The large nonlinear phase shifts imparted to the fundamental beam during Cerenkov second harmonic generation (SHG) in a DAN, 4-(N,N-dimethylamino)-3-acetamidonitrobenzene, single crystal core fiber are explained and modelled numerically.
Kim, Dug Y., Krijnen, Gijs, Schiek, Roland, Stegeman, George J., Torruellas, William E., Vidakovic, Petar, Zyss, Joseph   +6 more
core   +3 more sources

New model of the fiber coupling efficiency of a partially coherent Gaussian beam in an ocean to fiber link.

Optics Express, 2018
The fiber coupling efficiency between the turbulent ocean to fiber of a partially coherent Gaussian beam propagating through the weak to strong anisotropic oceanic turbulence is studied.
Beibei Hu, Yi-xin Zhang, Yun Zhu
semanticscholar   +1 more source

Characteristic analysis of core radius, core refractive index, mismatched phase constant and coupling efficiency about 2 × 2 fiber directional coupler based on MATLAB

Results in Optics, 2022
When two parallel waveguides are close to each other, the power of the two adjacent waveguides will be periodically converted to form a directional coupled waveguide system ().
YuCheng Li, Yang Zhang, YongTian Li, YiFeng Wu   +3 more
doaj   +1 more source

Wavelength-independent coupler from fiber to an on-chip cavity, demonstrated over an 850nm span [PDF]

, 2007
A robust wide band (850 nm) fiber coupler to a whispering-gallery cavity with ultra-high quality factor is experimentally demonstrated. The device trades off ideality for broad-band, efficient input coupling.
Carmon, Tal, Ostby, Eric P., Vahala, Kerry J., Wang, Steven Y. T.   +3 more
core   +1 more source

Photonic Integrated Circuits: Research Advances and Challenges in Interconnection and Packaging Technologies

Photonics
Silicon photonics, serving as a cornerstone technology in modern information technology, demonstrates significant application potential in critical scenarios such as high-speed data center interconnects and integrated optical communication systems ...
Wenchao Tian, Yifan Wang, Haojie Dang, Huahua Hou, Yuanyuan Xi   +4 more
doaj   +1 more source

Coupling between guided modes of two parallel nanofibers

New Journal of Physics, 2020
We study the coupling between the fundamental guided modes of two identical parallel nanofibers analytically and numerically. We calculate the coefficients of directional coupling, butt coupling, and self coupling as functions of the fiber radius, the ...
Fam Le Kien, Lewis Ruks, Síle Nic Chormaic, Thomas Busch   +3 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

On the Impact and Mitigation of Turbulence in Fiber-Coupled FSO Systems

IEEE Access
Fiber-coupled free-space optics (FSO) communications have emerged as a promising wireless technology due to their flexibility, speed, security, and seamless integration with fiber optic systems.
Vitor D. Correia, Marco A. Fernandes, Paulo P. Monteiro, Fernando P. Guiomar, Gil M. Fernandes   +4 more
doaj   +1 more source