Results 31 to 40 of about 6,021,926 (284)

Corn plants as temporary acoustic barrier to limit the effects of noise pollution

open access: yes, 2021
Corn is a cereal imported into Europe from the Americas. It is used for human and animal feed, but there are also industrial uses such as the production of ethanol, of fuel for heating homes, or the production of starch. Corn grows in the summer in areas
Ciaburro G.   +2 more
core   +1 more source

In-fiber subpicosecond pulse shaping for nonlinear optical telecommunication data processing at 640 Gbit/s [PDF]

open access: yes, 2012
We review recent work on all-fiber (long-period fiber grating) devices for optical pulse shaping, particularly flat-top pulse generation, down to the subpicosecond range and their application for nonlinear switching (demultiplexing) of optical time ...
A. T. Clausen   +26 more
core   +1 more source

Noise: towards a definition [PDF]

open access: yes
The research aims to explore the perceptual affects of noise on the relationship between performers, their instruments and listeners. The portfolio of compositions and accompanying thesis demonstrates the results of this treatment of sound and space ...
Riley, Thomas Richard
core   +3 more sources

Noise-like pulse trapping in a figure-eight fiber laser

open access: yesOptics Express, 2015
We report on the trapping of noise-like pulse in a figure-eight fiber laser mode locked by nonlinear amplifier loop mirror (NALM). After achievement of noise-like vector pulse, it was found that the wavelength shift of the two resolved polarization components responsible for the pulse trapping was very sensitive to the cavity birefringence. By properly
Ai-Ping, Luo   +7 more
openaire   +2 more sources

Noise-like pulse in a gain-guided soliton fiber laser

open access: yesOptics Express, 2007
We report on the operation of a passively mode-locked fiber ring laser made of purely positive dispersion fibers and mode-locked by using the nonlinear polarization rotation technique. It was experimentally found that apart from the gain-guided soliton operation the laser can also emit a kind of noise-like pulse. We show numerically that the noise-like
L M, Zhao   +4 more
openaire   +2 more sources

Bandwidth-tunable dissipative soliton and noise-like pulse in a. normal dispersion fiber laser with a. dual-scale saturable absorber

open access: yes, 2016
A bandwidth-tunable dissipative soliton (DS) and noise-like pulse are demonstrated in an all-fiber normal dispersion fiber laser by employing a novel spectral filtering scheme. The mode locker is fabricated with a mixture composite that.
Cui, Yudong (cuiyudong@opt.cn)   +1 more
core   +1 more source

Noise-Like Square Pulses in Both Normal and Anomalous Dispersion Regimes

open access: yesIEEE Photonics Journal, 2021
Noise-like square pulses (NLSPs) have been experimentally investigated in both normal and anomalous dispersion regimes. A chirped fiber Bragg grating (CFBG) has been employed as a dispersion management element in the compact linear-cavity mode-locked Yb ...
Tianhao Dong   +4 more
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

All-optical pulse reshaping and retiming systems incorporating pulse shaping fiber Bragg grating

open access: yes, 2006
This paper demonstrates two optical pulse retiming and reshaping systems incorporating superstructured fiber Bragg gratings (SSFBGs) as pulse shaping elements.
Ibsen, M.   +3 more
core   +1 more source

On the design of an energy-harvesting noise-sensing WSN mote [PDF]

open access: yes, 2014
Wireless sensor networks (WSNs) could potentially help in the measurement and monitoring of noise levels, an important step in mitigating and fighting noise pollution.
Tan, Wilson M.   +4 more
core   +2 more sources

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