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Presents a study which obtained a single-frequency, in-phase mode operation from an antiguided phase-locked array with Talbot-type filters by incorporating a buried distributed feedback grating using a metalorganic chemical vapor deposition process. Means of improving device performance; Discussion on the structure of the antiguided distributed feedback laser array; Results of the study.

Half-ring geometry single quantum well GaAlAs lasers have been fabricated. These lasers rely on a single cleave to obtain both resonator end reflectors. Using a buried-heterostructure waveguide for lateral confinement and a high reflectivity facet coating, threshold currents as low as 14.5 mA and a frequency response extending to 6.5 GHz have been achieved. [ABSTRACT FROM AUTHOR]