Statistical measurements of fast changing electromagnetic fields
The present works aims at describing important statistical indexes such as the field uniformity, the field inhomogeneity and the statistics near the cavity walls for a special case of fast changing random electromagnetic
fields. We generate this kind of electromagnetic environment by means of a vibrating intrinsic reverberation chamber. The use of several, fast, in-house, 3-axis field sensors allows for extensive, "real-time" measurements inside such a chamber.
Spatial correlation functions of inhomogeneous random electromagnetic fields.
We analyze the influence of an infinite planar perfectly conducting surface on the spatial correlation functions of a random quasimonochromatic classical electromagnetic vector field, based on a TE/TM decomposition of an angular spectrum of random plane waves. The presence of the surface causes the correlation to depend on both the absolute and relative locations of the field points (inhomogeneous correlation). Known asymptotic results for statistically homogeneous random free fields are retrieved as special cases. The analytical results are illustrated with computations for separations that are either perpendicular or parallel to the surface. The correlation distance for any field component exhibits a damped oscillatory dependency on the local center point. A geometric interpretation in terms of fluctuations of correlation cells is given.
Strategies for glass based photonic system integration
There is a clear tendency to integrate more and more opto-electronic and micro-optical components like optical fibers, laser diodes, modulators, isolators, beam-splitting components and micro lenses in also increasingly dense and complex assemblies. The paper will discuss thin glass as a very promising base material for that kind of photonic packaging on interposer and board level including optical interconnection using fibers.