A novel design for beam forming grating couplers
Abstract:Edge-emitting laser diodes need astigmatic lenses for collimating and focusing the laser beam. The integration of the element on chip offers a more elegant solution. A grating is etched into the cladding of the planar waveguide. Beam forming can be achieved by modulating the grating parameters or by using a tapered cladding. These two possibilities are discussed in this paper.
Document Type: Original Article
Affiliations: 1: Leica-Geosystems, 9435 Heerbrugg, Switzerland 2: Leister-Technologies, 6600 Sarnen, Switzerland 3: Carl Zeiss Oberkochen CZO, 73446 Oberkochen, Germany 4: INA Wälzlager Schaeffler oHG, 91072 Herzogenaurach, Germany 5: Lehrstuhl für Optik, Universität Erlangen-Nürnberg, Staudtstrasse 7, 91058 Erlangen, Germany
Publication date: February 1, 2001