BH-Laser mit getapertem optischen Wellenleiter, insbesondere BH-DFB-Laser

DE 20320771 U UPAB: 20050506 NOVELTY - The device consists of a buried optical waveguide (1) with in-built active layer (2) on a substrate and an integrated diffraction grid. The diffraction grid has a constant grid period and the waveguide is curved so that the effective grid period of the diffraction grid for the optical wave passing through it is adapted to the local refractive index profile according to a relationship between the effective grid period, emission wavelength and refractive index. USE - Especially a buried heterostructure-distributed feedback laser. ADVANTAGE - Enables different shapes and can be implemented using different materials and its DFB grid can be inexpensively manufactured by electron beam lithography or holography.