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1997
Journal Article
Titel
Efficient focusing polymer waveguide grating couplers
Abstract
Investigations on focusing grating fabricated in polymer waveguides by electron beam lithography are reported. With blazed gratings, an incoupling efficiency of 42 per cent is achieved. A curvature correction of the grating lines allow the focusing properties to be improved: a spotsize which corresponds to one and a half times the diffraction limit is archieved.