Low jitter, low inductance solid dielectric switches.
It has been shown that the use of graded solid dielectric sandwiches in laser-triggered spark gaps (LTS) can lead to highly desirable multichannel operations while maintaining the low delay and jitter performance characteristics of LTS. As many as ten separate breakdown channels were observed when small circular or hexagonal aluminum inserts were inserted between two Mylar dielectric sheets stressed at 4.1 kV/mil. A reduction in rise time was noted for these multichannel switching events.
Development of a reliable fast response laser‐triggered dielectric switch
Detailed performances of a laser triggered dielectric switch (LTDS) are described. Thin polypropylene films of 25 or 35 μm in thickness were used for insulation of the spark gap. Maintenance‐free operation was achieved by automatic winding of the film after each laser shot. A square optical pulse of 1 ns duration with a rise time of less than 350 ps was generated by using a fast Pockels cell driven by the LTDS with good reproducibility. The switching jitter was measured to be less than the detection limit of 100 ps. Using the LTDS, a single pulse was selected from a mode‐locked pulse train with the success probability of better than 95%. Comparison of the performance of the LTDS with other switching devices are 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.