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Journals and Conferences
 The global paleointensity database is restricted by the high failure rate of paleointensity analyses. Excluding thermal alteration, failure is usually caused by the presence of multidomain grains and interactions among grains, two properties that can be identified using first-order reversal curve (FORC) diagrams. We measured FORC diagrams on sister… (More)
This paper discusses recent developments which have led to dramatic improvements in the performance of optical parametric amplifiers, utilising both highly nonlinear fibers and photonic crystal fibers.
We describe an all-fiber chi(3) optical parametric oscillator based on four-wave-mixing around the zero dispersion wavelength of a dispersion shifted fiber. We demonstrate a widely tunable (1300-1500 nm, 1600-1860 nm), high conversion efficiency output.
Transmission system operators are responsible for secure and reliable operation of their grids. An important topic is the analysis of possible risks for the transmission system network and the system equipment. Triggered by unexpected audible noise at some HV transformers, investigations into the possible cause were started. These indicated that DC are… (More)
Photonic crystal fibres (PCFs) can now be constructed exhibiting a wide range of dispersion profiles and nonlinearities, which have enabled the demonstration of many nonlinear optical phenomena. In our experiments, we have used a range of fibres with varying zero group velocity dispersion (GVD) points around the visible red pump wavelength. Upshifted… (More)