Results 11 to 20 of about 4,434,198 (281)

Graded-index magnonics [PDF]

open access: yes, 2015
© 2015 AIP Publishing LLC. The wave solutions of the Landau-Lifshitz equation (spin waves) are characterized by some of the most complex and peculiar dispersion relations among all waves.
CS Davies (16728219)   +1 more
core   +14 more sources

Structural integrity of engineering components made of functionally graded materials [PDF]

open access: yes, 2008
Functionally graded materials (FGM) are composite materials with microstructure gradation optimized for the functioning of engineering components. For the case of fibrous composites, the fibre density is varied spatially, leading to variable material ...
Oyekoya, Oyedele O.
core   +7 more sources

Multimode soliton collisions in graded-index optical fibers [PDF]

open access: yesOptics Express, 2022
In this work, we unveil the unique complex dynamics of multimode soliton interactions in graded-index optical fibers through simulations and experiments. By generating two multimode solitons from the fission of an input femtosecond pulse, we examine the evolution of their Raman-induced red-shift when the input pulse energy grows larger.
Sun, Yifan   +5 more
openaire   +7 more sources

Intra-Cavity Raman Laser Operating at 1193 nm Based on Graded-Index Fiber

open access: yesPhotonics, 2022
Nonlinear Raman frequency conversion is an important technical scheme to obtain special optical band lasers based on conventional ion-doped lasers. In our work, we designed an intra-cavity Raman fiber laser based on graded index fiber (GRIF) as the Raman
Chunhua Hu, Ping Sun
doaj   +1 more source

Novel Method for Improving the Capacity of Optical MIMO System Using MGDM [PDF]

open access: yes, 2014
In current local area networks, multimode fibers (MMFs), primarily graded index (GI) MMFs, are the main types of fibers employed for data communications.
Dayoub, Iyad   +7 more
core   +1 more source

Femtosecond Soliton Erbium-Doped Fiber Laser With a Symmetrical GIMF–SIMF–GIMF Saturable Absorber

open access: yesIEEE Photonics Journal, 2019
A femtosecond soliton erbium-doped fiber ring laser with the symmetrical saturable absorber (SA) of graded index multimode fiber-step index multimode fiber-graded index multimode fiber (GIMF-SIMF-GIMF) is proposed and proved.
Qian-Chao Wu   +7 more
doaj   +1 more source

Graded-index solitons in multimode fibers

open access: yesOptics Letters, 2018
We investigate stability of optical solitons in graded-index (GRIN) fibers by solving an effective nonlinear Schrödinger equation that includes spatial self-imaging effects through a length-dependent nonlinear parameter. We show that this equation can be reduced to the standard NLS equation for optical pulses whose dispersion length is much longer than
Amira S. Ahsan, Govind P. Agrawal
openaire   +2 more sources

Twist-Related Speckle Variation in Graded-Index Multimode Fiber

open access: yesIEEE Photonics Journal, 2018
We theoretically investigate a twist-related speckle variation in a graded-index multimode fiber. The simulation results show that by increasing the offset splicing distance between a single-mode fiber and a multimode fiber, the speckle pattern tends to ...
Hongye Li   +4 more
doaj   +1 more source

Cascaded Generation in Multimode Diode-Pumped Graded-Index Fiber Raman Lasers

open access: yesPhotonics, 2021
We review our recent experimental results on the cascaded Raman conversion of highly multimode laser diode (LD) pump radiation into the first- and higher-order Stokes radiation in multimode graded-index fibers.
Alexey G. Kuznetsov   +5 more
doaj   +1 more source

Mid-infrared generation beyond 3.5 µm in a graded-index silica fiber [PDF]

open access: yesEPJ Web of Conferences, 2023
We present theoretical as well as experimental evidence of far-detuned nonlinear wavelength conversion towards the mid-infrared, namely beyond 3.5 µm, in a few-mode graded-index silica fiber pumped at 1.064 µm.
Stefanska Karolina   +5 more
doaj   +1 more source

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