Results 21 to 30 of about 810,010 (294)

Slowing of pulses to c/10 with subwatt power levels and low latency using Brillouin amplification in a bismuth-oxide optical fiber [PDF]

open access: yes, 2007
We report the generation of slow light using Brillouin amplification in a short length of highly nonlinear bismuth-oxide fiber. By using just 2m of fiber, we demonstrate a five-fold reduction in group velocity for ~200ns pulses, which we believe to be a ...
Jáuregui Misas, César   +2 more
core   +1 more source

Intra-cavity spectroscopy using amplified spontaneous emission in fiber lasers [PDF]

open access: yes, 2011
Fiber laser sources offer interesting possibilities for gas sensors since they can operate over an extended wavelength range, encompassing the near-IR absorption lines of a number of important gases but a major problem is that overtone absorption lines ...
Arsad, Norhana   +3 more
core   +1 more source

Wood anatomy of boreal species in a warming world: a review

open access: yesiForest - Biogeosciences and Forestry, 2020
Global warming is affecting tree growth and forest productivity, especially in the Northern boreal ecosystems. Wood quality, which is largely determined by anatomical traits of wood, is vital for the forest industry and global carbon sequestration ...
Zhang S   +4 more
doaj   +1 more source

Steel Fiber Role-Impact Recent Literature on Steel Fiber Role in Resistance Improvement of Fibrous Concrete to Repeated Impacts

open access: yesWasit Journal of Engineering Sciences, 2023
Concrete is a brittle material when subjected to design and accidental impact loads, which are expected along the life span of the structure. To improve the impact performance of concrete, steel fibers are used as short discrete material reinforcing ...
Mustafa Ozakca   +4 more
doaj   +1 more source

Reducing Polarization Mode Dispersion With Controlled Polarization Rotations [PDF]

open access: yes, 2006
One of the fundamental limitations to high bit rate, long distance, telecommunication in optical fibers is Polarization Mode Dispersion (PMD). Here we introduce a conceptually new method to reduce PMD in optical fibers by carrying out controlled ...
Barlow A J   +14 more
core   +2 more sources

An experimental study of the California bearing ratio of basalt fiber reinforced loess

open access: yesShuiwen dizhi gongcheng dizhi, 2021
In order to study the factors affecting the CBR value of the fiber-reinforced loess and the mechanism of the fiber-reinforced soil, chopped basalt fiber was used as the reinforcement material, and the CBR test was performed by changing the moisture ...
Peida LI   +3 more
doaj   +1 more source

Experimental Study on the Mechanical Behaviors of Loess Reinforced with Randomly Distributed Basalt Fiber

open access: yesApplied Sciences, 2022
Loess has the structural characteristics of porous, weakly cemented and under compacted, leading to its collapsible, disintegrative and dissolute features.
Honggang Kou, Qiang Ma, Shunli Han
doaj   +1 more source

Active fiber length distribution and its application to determine the critical fiber length

open access: yesPolymer Testing, 2009
Abstract A new test and evaluation method has been developed to determine the critical fiber length characteristic of short fiber reinforced composites. From the so-called active ‘barbe’ (beard) length distribution calculated from the length distribution of the fibers in the composite and from the length distribution of the fibers protruding from the
László M. Vas   +2 more
openaire   +1 more source

Effect of fiber volume fraction on the mechanical properties of randomly oriented glass fiber reinforced polyurethane elastomer with crosshead speeds

open access: yesAlexandria Engineering Journal, 2020
The effect of fiber length and fiber volume fraction at different crosshead speeds on the mechanical properties and toughness of randomly oriented glass fibers reinforced polyurethane elastomer composites were studied using standard simple tension test ...
E. Elkazaz   +3 more
doaj   +1 more source

Simulation of Optical Fiber Amplifier Gain Using Equivalent Short Fibers

open access: yes, 2019
Electromagnetic wave propagation in optical fiber amplifiers obeys Maxwell equations. Using coupled mode theory, the full Maxwell system within an optical fiber amplifier is reduced to a simpler model.
Drake, Dow   +3 more
core   +1 more source

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