Results 51 to 60 of about 1,780,396 (352)

Experimental Investigation of a Hybrid S-Band Amplifier Based on Two Parametric Wavelength Converters and an Erbium-Doped Fiber Amplifier

open access: yesPhotonics
Multi-band optical communication presents a promising avenue for the significant enhancement of fiber-optic transmission capacity without incurring additional costs related to new cable deployment via the utilization of the bandwidth beyond the ...
Cheng Guo   +6 more
doaj   +1 more source

Dynamics of soliton cascades in fiber amplifiers

open access: yesOptics Letters, 2016
We study numerically the formation of cascading solitons when femtosecond optical pulses are launched into a fiber amplifier with less energy than required to form a soliton of equal duration. As the pulse is amplified, cascaded fundamental solitons are created at different distances, without soliton fission, as each fundamental soliton moves outside ...
Arteaga-Sierra, F. R.   +2 more
openaire   +3 more sources

Characteristics of Q-switched cladding-pumped ytterbium-doped fiber lasers with different high-energy fiber designs

open access: yes, 2001
We theoretically and experimentally analyze Q-switched cladding pumped ytterbium-doped fiber lasers designed for high pulse energies. We compare the extractable energy from two high-energy fiber designs: (1) single- or few-moded low-NA large mode area ...
Alvarez-Chavez, J.A.   +7 more
core   +1 more source

All-fiber side pump combiner for high-power fiber lasers and amplifiers

open access: yes, 2022
Paper 75801EWe present an all-fiber side pump combiner for high power fiber lasers and amplifiers. It consists of a capillary with decreasing wall thickness fused around the active fiber in a way that it becomes an additional cladding layer of it.
Wenetiadis, G.   +4 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Transverse-modal-instability gain in high power fiber amplifiers: Effect of the perturbation relative phase

open access: yesAPL Photonics, 2019
Local transverse modal instability (TMI) gain has been derived by carrying out a stability analysis of the fundamental mode amplification in high power fiber amplifiers, in the presence of spatial (transverse) and temporal perturbations, taking into ...
Michalis N. Zervas
doaj   +1 more source

Improvement of Noise and Gain Characteristics of Low-Repetition-Rate Double-Pass Fiber Amplifiers

open access: yesIEEE Photonics Journal, 2019
The noise and gain characteristics of pulsed double-pass (DP) amplifiers operating at low repetition rates are analyzed theoretically and experimentally.
Rao Li   +3 more
doaj   +1 more source

The effect of using different materials on erbium-doped fiber amplifiers for indoor applications

open access: yes, 2019
This paper investigated the different materials of optical fibers, two of them are plastic optical fibers that are namely polysulfone (PSU)/vinyl-phenyl acetate (VPAC) with refractive indices of 1.63/1.567, and the second plastic material namely sapphire
A. Rashed   +6 more
semanticscholar   +1 more source

Erbium:ytterbium co-doped large-core fiber laser with 297W continuous-wave output power

open access: yes, 2007
We have demonstrated a high-power and high-efficiency erbium:ytterbium (Er:Yb) co-doped fiber laser that produces 297 W of continuous-wave output at 1567 nm.
Nilsson, J.   +23 more
core   +1 more source

Effects of random phase and amplitude errors in optical fiber Bragg gratings [PDF]

open access: yes, 2000
This paper studies the influence of random phase and amplitude fabrication errors on the performance of optical filters based on fiber Bragg gratings (FBGs).
Feced, R., Zervas, M.N.
core   +1 more source

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