6558 Search results for: „“
Thermal 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...
PublicationsNew 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...
PublicationsPreparation 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...
PublicationsSelective 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....
PublicationsTomographic 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...
PublicationsBending insensitivity of fiber Bragg gratings in suspended-core optical fibers
This Letter presents simulation and experimental results that explore bending insensitivity of fiber Bragg gratings in suspended-core optical fibers. The implementation of thin silica bridge in the fibers...
PublicationsThree-dimensional multi-terminal superconductive integrated circuit inductance extraction
Accurate inductance calculations are critical for the design of both digital and analogue superconductive integrated circuits, and three-dimensional calculations are gaining importance with the advent...
PublicationsNoble metal nanoparticles for LSPR-based optical sensing
A newly emerging field in bioanalytics based on biomolecular binding detected label-free at single metal nanoparticles is introduced. Thereby particles which show the effect of localized surface plasmon...
PublicationsPlasmonic nanoparticles for bioanalytics and therapy at the limit
Noble metal nanoparticles interacting with electromagnetic waves exhibit the effect of localized surface plasmon resonance (LSPR) based on the collective oscillation of their conduction electrons. Local...
PublicationsUltrasensitive nanosensors based on electronic effects in nanoscale structures
Charge carrier distribution changes in solid substrates induced by the presence of biomolecules have the potential as sensoric principle. For a high surface-to-bulk ratio as in the case of nanostructures,...
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