Application of laser welding technique for high speed optical transmission device package

摘要

In this paper, low PWS (post-weld shift) and large aligning tolerance DFB-LD (distributed feedback laser diode) modules and APD (avalanche photodiode) modules were obtained by combining proper package design and the development of a laser welding technique. The welded parts of the modules were analyzed in terms of laser welding parameters, cross-section analysis and shear strength tests.