The two-dimensional shape of far-field patterns was studied and optimised in a 1.3 µm spot-size converted laser with a pn-buried heterostructure. After optimising the laser structure and using 2 inch wafer processing, the authors improved the shape of the far-field pattern, and the coupling efficiency by using an optical fibre. An average coupling efficiency of –1.4 dB and good uniformity in the laser characteristics were obtained.
Inspec keywords: optical fibre couplers; optical communication equipment; semiconductor lasers; p-n heterojunctions
Other keywords:
Subjects: Semiconductor lasers; Optical communication; Optical communication devices, equipment and systems; Design of specific laser systems; Fibre optics; Fibre couplers and connectors; Lasing action in semiconductors
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