6814 Suchergebnisse für: „“
Plasmonic effects in metal filled microstructured optical fibers
By blocking selected holes of photonic crystal fibers and filling them with liquid gold, we are able to introduce micron sized wires into silica fibers. We show that it is possible to excite surface plasmon...
PublikationenPartially coherent light-emitting diode illumination for video-rate in-line holographic microscopy
The light of a light emitting diode (LED) or a common thermal source like a tungsten filament lamp is known to be quasi incoherent. We generate partially coherent light of these sources with a volume of...
PublikationenFabrication and characterization of special microstructured fibers
Microstructured optical fibers (MOFs) as a novel type of light guiding media typically combine structural elements with very different chemical and optical behavior, e.g. silica - air, silica - high refractive...
PublikationenOptical excitation of surface modes in selectively gold filled photonic crystal fibers
By blocking selected holes of photonic crystal fibers and filling them with liquid gold, we are able to introduce micron sized wires into silica fibers. We show that it is possible to excite surface...
PublikationenTomographical measurement of stress distribution in non-axisymmetric preforms
This paper gives an overview about the first results of the photoelastic computer tomography measurements of the axial residual stress profile in preforms at the IPHT. A polarimetric method for measuring...
PublikationenThermal stress anomaly in rare-earth-doped fiber materials codoped with aluminum and phosphorus
We report on measurements of thermal stress in optical fiber preforms. We found, that in contrast to simple models the change in the coefficient of thermal expansion of silica is not additively for codoping...
PublikationenNew developments in high power fiber lasers based on alternative materials
Sintering of Yb-doped fused silica granulates is a well established technique developed by the IPHT and Heraeus Quarzglas and it produces very homogeneous rare earth doped bulk silica core rods for fiber...
PublikationenPreparation and Characterization of Microstructured Silica Holey Fibers
Silica based microstructured holey fibers offer the possibility for filling with unconventional fiber materials. Of special interest are chalcogenide glasses due to their high refractive index and...
PublikationenSelective filling of metals into photonic crystal fibers
In this paper we present a method for the selective blocking and subsequent filling of metals into photonic crystal fibers. We derive a model which can predict the necessary duration of the filling process....
PublikationenTomographic measurement of stress in optical fiber preforms with microstructured core
We present results of photoelastic computer tomography measurements of the axial residual stress profile in fiber preforms. A polarimetric method for measuring the stress profile of samples with arbitrary...
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