Efficient focusing polymer waveguide grating couplers
- 27 March 1997
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 33 (7) , 623-624
- https://doi.org/10.1049/el:19970400
Abstract
Investigations on focusing grating couplers fabricated in polymer waveguides by electron beam lithography are reported. With blazed gratings, an incoupling efficiency of 42% is achieved. A curvature correction of the grating lines allows the focusing properties to be improved: a spotsize which corresponds to one and a half times the diffraction limit is achieved.Keywords
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